ELEATION’s ANSYS Basic to Professional Training Program

Training Sessions
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SESSION 1 - Theory of CAE

  1. 1. How many methods to Validate any Design?
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  2. 2. How many Numerical Methods are there?
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  3. 3. Can we give Vibrational parameters as input in Finite Volume Method (FVM)
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  4. 4. We use FEM to find out Stresses and deformation because of pressure load?
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  5. 5. Is MBD a part of CAE?
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SESSION 2 - Theory of FEM and CAE

  1. 1. How many advantages of FEM and FEA are there?
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  2. 2. Is FEM and FEA Different?
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  3. 3. How many total DOF’s are there
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  4. 4. User have to give Thickness as an additional Input while doing 3D meshing.
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  5. 5. How many questions you should be able to answer before doing FE Analysis?
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SESSION 3 - Theory of 1D Meshing

  1. 1. We use 1D Elements when two dimensions of any component / objects are very very less then one dimension
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  2. 2. In ANSYS you can get directional Deformation and Total Deformation.
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  3. 3. Mass of an object on Moon and Earth is same
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  4. 4. 1D Element shape is Line.
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  5. 5. We can do 1D Meshing on Engine Head
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SESSION 4 - 1D Beam Element Subjected to Tensile Loading

  1. 1. Can we create Line Geometry in ANSYS Mechanical?
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  2. 2. Can we create user defined cross-section in ANSYS?
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  3. 3. Can we use multiple material on one part/body?
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  4. 4. Can we create a line body without creating sketch
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  5. 5. Can we create Nodes and Elements in Design modeller
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SESSION 5 - 1D Beam Element Subjected to Compressive Loading

  1. 1. Can we apply force in negative direction?
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  2. 2. To change the material we go to Mechanical window.
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  3. 3. We can change the material from Design modeller
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  4. 4. We can change the material from Mechanical
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  5. 5. In ANSYS for compressive loading we can negative stress values
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SESSION 6 - 1D Beam Element Subjected to Bending Load

  1. 1. Maximum Combine Stress Means
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  2. 2. Minimum Combine Stress Means
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  3. 3. We get zero stress value on neutral Axis
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  4. 4. We can change the material from Mechanical
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  5. 5. In ANSYS If we select minimum combined stress, then we can negative stress values
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SESSION 7 - Fix-Fix (Fixed) 1D Beam Element Problem

  1. 1. To perform Fix-Fix Beam problem in ANSYS we need two line bodies
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  2. 2. In Fix-Fix Beam Problem all 6 DOF’s are fixed
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  3. 3. Can we create two lines in ANSYS Mechanical
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  4. 4. If we Right click on Mesh and click on Generate mesh then both the line will be meshed
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  5. 5. Can we define Material in Design modeller
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SESSION 8 - Simply Supported 1D Beam Element Problem

  1. 1. Can we apply force on Nodes
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  2. 2. In simply supported Beam Problem all 6 DOF’s are fixed
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  3. 3. Can we solve Simply Supported 1D Beam Element problem via creating two lines
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  4. 4. Can we create odd number of Elements
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  5. 5. Can we apply constraints on Nodes
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SESSION 9 - How to find Forces on each member of Truss Structure

  1. 1. A planar truss is one where all members and nodes lie within a two dimensional plane
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  2. 2. A space truss has members and nodes that extend into three dimensions
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  3. 3. The top beams in a truss are called top chords
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  4. 4. The interior beams are called webs
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  5. 5. If we want to calculate Force coming on each member of truss then the material and cross – section of truss member does not play any major role
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SESSION 10 - Free-Free Run Analysis

  1. 1. Free – Free Run is a sub type of Modal Analysis which is used to find the connectivity of model / Geometry
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  2. 2. We get disconnected model because the CAD software works on different platform and CAE software works on Different platform.
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  3. 3. Tolerance is a gap between any two entity which you want to be connected
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  4. 4. If we keep merge bodies yes, then my software will not connect the lines
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  5. 5. In Free-Free run we don’t give number of Modes.
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SESSION 11 - Theory of 2D Meshing

  1. 1. How Many nodes does Second order Tria Element has?
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  2. 2. Holes should be modeled carefully with a washer (1.5 to 2 times diameter)
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  3. 3. Ideal Value of Warpage Angle is 0 Degree
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  4. 4. Acceptable value of aspect ratio is less than 5
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  5. 5. Ideal Value of Jacobian is 0.6
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SESSION 12 - 2D Geometry Editing

  1. 1. We can create Mid-Surface using surface patch option
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  2. 2. We can create new surfaces using Weld option
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  3. 3. Minimum and Maximum Threshold in Mid-Surface Option cannot be same
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  4. 4. Patch Healing takes the edges surrounding the selected faces and tries to create a single face to cover the region.
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  5. 5. Very largeSewing tolerances can result in strange results and should be avoided
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SESSION 13 - Generate 2D Surface Bodies from 1D Line Bodies

  1. 1. Can we generate solid bodies from line bodies
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  2. 2. If you select From PlaneOption under New plane then, A new plane is based on another existing plane
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  3. 3. Use the Scale and Turns/Pitch properties of the Sweep feature to create helical sweeps
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  4. 4. In Sweep Command, Alignment parameter has two options.
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  5. 5. If you select From Point and NormalOption under New plane then, new plane is defined by a point and a normal direction.
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SESSION 14 - 2D Meshing : Plate with hole - Without Washer

  1. 1. Can we define thickness to surface bodies in Mechanical (ANSYS)
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  2. 2. There are total 2 Mesh methods for 2D Meshing, If you select Methods, Under Mesh Option
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  3. 3. linear Option will create 1st Order Elements
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  4. 4. Quadrilateral Dominant Option will only create Quard elements, It will never create tria elements
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  5. 5. Quadratic Option will create 2nd Order Elements
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SESSION 15 - 2D Meshing - Plate With Hole With Washer

  1. 1. Washer around the hole should be 1.5 times to 2 times the hole Diameter
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  2. 2. Is it possible to create 5 Elements around the hole
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  3. 3. Can we define Hole Diameter in Mechanical(ANSYS)
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  4. 4. If we have more number of Elements around the hole we get better results
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  5. 5. Can we define Element type in design Modeller (ANSYS)
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SESSION 16 - 2D Meshing - Plate With Hole With Biasing

  1. 1. Can we split the plate diagonally.
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  2. 2. Biasing Factor 1 and No Biasing will give same results
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  3. 3. Can we give negative biasing
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  4. 4. Can we give Biasing factor more than 20
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  5. 5. There are 4 ways in which we can apply biasing in Mechanical (ANSYS)
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SESSION 17 - Theory of 3D Meshing

  1. 1. How many 3D Element shapes are there?.
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  2. 2. Parabolic Penta Element has 6 nodes
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  3. 3. How many nodes does hex element has?
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  4. 4. 3D Element have 3 DOF’s
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  5. 5. Ideal value of tetra collapse is 1
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SESSION 18 - 3D Geometry Creation and Editing

  1. 1. Can we Extrude the sketch in both direction.
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  2. 2. Can we give negative values in depth option during Extrude process
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  3. 3. Can we Create Solid model in Mechanical
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  4. 4. Extrude option is in Create drop down menu
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  5. 5. You can create new plane in Design modeller
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SESSION 19 - 3D Meshing - Tetrahedron Element - Patch Conforming

  1. 1. There are two methods to create Tetra Elements – Patch conforming and Patch Independent.
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  2. 2. All faces and their boundaries are respected (considered) and meshed in Patch Conforming Method
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  3. 3. CAD clean-up required for poor geometry if you want to create tetra Elements using Patch Conforming MethodWe can create Hexa Element using Patch Conforming Method
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  4. 4. We can create Hexa Element using Patch Conforming Method
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  5. 5. Conforming Method will not defeature the geometry and generate the 3D Element.
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SESSION 20 - 3D Meshing - Tetrahedron Element - Patch Independent

  1. 1. Patch Independent Method is Good for gross de-featuring of poor quality CAD geometries.
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  2. 2. Patch conforming Method first create 2D Elements in Volume first and then project it on Surfaces and Edges
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  3. 3. No CAD clean-up required for poor geometry if you want to create tetra Elements using Patch Independent Method
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  4. 4. Patch conforming and Patch independent will not create 3D Hexa Element
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  5. 5. Patch Conforming and Patch independent create same pattern of 3D tetra Element.
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SESSION 21 - 3D Meshing - Hexahedron Element - Using Hex Dominant Method

  1. 1. Hexa element is 8 noded Element.
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  2. 2. Using Hex dominant option you can create Penta Elements
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  3. 3. Quadratic Penta element can’t be generated using Hex dominant Option
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  4. 4. You can use surface of one geometry to create a new plane
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  5. 5. Cut Material option will delete the solid bodies
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SESSION 22 - 3D Meshing - Hexahedron Element - Using Sweep Method

  1. 1. Using Revolve option you can create solid geometries.
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  2. 2. Using Skin / loft Option you can create solid geometries
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  3. 3. In Sweep Method if you select Algorithm as Axisymmetric then you have to specify source and target face
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  4. 4. In Sweep Method if you select Algorithm as Axisymmetric then it will create 3D Tetra Element
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  5. 5. Global Mesh Parameters doesn’t work if you select Sweep Method
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SESSION 23 - 3D Meshing - Hexahedron Element - Using Multizone Method

  1. 1. Multizone method Generates structured hexa mesh where block topology permits
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  2. 2. Multizone method Automatically decomposes geometry into blocks
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  3. 3. Pave option Creates a good quality mesh on faces with high curvature, and also when neighbouring edges have a high aspect ratio.
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  4. 4. Mapped Mesh Type option is used to create tetra Element
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  5. 5. You can generate tetra Element using Multizone method
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SESSION 24 - Theory of Static Structural Analysis

  1. 1. K is the stiffness matrix of the structure (an assemblage of individual element stiffness matrices)
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  2. 2. P is the vector of loads applied to the structure
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  3. 3. The structure's behavior is linear (must obey Hooke's Law).
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  4. 4. Time varying loads, Dynamic loads, Vibrations, Temperature cannot be applied in Linear Static
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  5. 5. Time variant loads which induce considerable inertial and/or damping forces will not be applied
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SESSION 25 - Static Structural Analysis Problem Statement - 1

  1. 1. Can we apply Frictionless support in Static Structural Analysis
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  2. 2. Can we Apply rotational velocity in Static Structural Analysis
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  3. 3. Can we Apply Pressure as load in Static Structural Analysis
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  4. 4. Can we apply moment in static Structural Analysis
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  5. 5. Can we apply time dependent load in Static Structural Analysis
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SESSION 26 - Static Structural Analysis Problem Statement - 2

  1. 1. Can we perform Static Structural Analysis is 1D Meshed Model
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  2. 2. Can we perform Static Structural Analysis is 2D Meshed Model
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  3. 3. Can we perform Static Structural Analysis is 3D Meshed Model
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  4. 4. Can we apply force , pressure and moment on Same model in static structural Analysis
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  5. 5. Can we apply constraints in more than 1 location in Static Structural Analysis
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SESSION 27 - Theory of Transient Structural Analysis

  1. 1. A transient analysis, by definition, involves loads that are a function of time
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  2. 2. In the Mechanical application, you can perform a transient analysis on either a flexible structure or a rigid assembly.
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  3. 3. The loading is Transient when Magnitude and / or direction changes with time.
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  4. 4. A transient structural analysis can be either linear or nonlinear. All types of nonlinearities are allowed - large deformations, plasticity, contact, hyperelasticity, and so on.
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  5. 5. The Mode Super position method extracts the natural frequencies of a component and Shows a combined result of Modal and Transient Structural Analysis together
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SESSION 28 - Transient Structural Analysis_Problem 1 _ Full Method

  1. 1. In Transient Structural Analysis can we apply time dependent load
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  2. 2. In Transient Structural Analysis can we apply moment
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  3. 3. In Transient Structural Analysis can we apply rotational Velocity
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  4. 4. In Transient Structural Analysis can we apply Frictionless support
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  5. 5. In Transient Structural Analysis can we get stress on each time step
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SESSION 29 - Transient Structural Analysis_Problem 2 _ Mode Superpostion Method

  1. 1. In Mode superposition method first we have to perform Modal Analysis
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  2. 2. Can we apply time dependent Frequency range
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  3. 3. Can we apply fixed support after linking Transient Structural Analysis with modal analysis
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  4. 4. In Transient Structural Analysis Direct and Mode superposition method gives same results
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  5. 5. In Transient Structural Analysis : Mode Superposition Method, we first perform Transient Structural Analysis and then modal analysis.
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SESSION 30 - Axi-symmetric Theory and Analysis

  1. 1. A problem in which the geometry, loadings, boundary conditions and materials are symmetric with respect to an axis is one that can be solved as an axisymmetric problem instead of solving the complete model
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  2. 2. Solving the model using Axi-symmetric concept will reduce the solver time and gives the same result
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  3. 3. Can we create cylindrical coordinate system in design modeller
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  4. 4. It is compulsory to define symmetric region if you want to perform Axi-symmetric Analysis
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  5. 5. Axi-symmetric is a type of Analysis
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SESSION 31 - Theory of Inertia Relief Analysis

  1. 1. Inertia Relief analysis is the analysis of unconstrained structure
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  2. 2. The applied loads are balanced by a set of translational and rotational accelerations (automatically determined by the solver) instead of reaction forces (as with “classic” boundary conditions)
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  3. 3. Displacement constraints on the structure should only be those necessary to prevent rigid-body motions (6 for a 3D structure).
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  4. 4. Models with both 2D and 3D element types or with symmetry boundary constraints are not recommended
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  5. 5. Symmetry models are not valid for an inertia relief analysis
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SESSION 32 - Inertia Relief Analysis - Problem Solution

  1. 1. Can we apply fixed support to and perform Inertia relief Analysis
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  2. 2. Can you select Inertia Relief Analysis in Workbench
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  3. 3. In ANSYS Mechanical, you can activate Inertia Relied from Solution tab in model tree
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  4. 4. Inertia Relief Analysis is a concept which is applicable via other analysis type.
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  5. 5. Inertia relief concept is used to perform analysis on un-constrained structure.
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SESSION 33 - Theory of EigenValue Buckling Analysis

  1. 1. When a structure is subjected to compressive axial Loading, buckling may occur
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  2. 2. Buckling is an instability that leads to Structural Failure
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  3. 3. Linear-buckling analysis calculates buckling load magnitudes that cause buckling and associated buckling modes
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  4. 4. FEA programs provide calculations of a large number of buckling modes and the associated buckling-load factors (BLF).
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  5. 5. The BLF is expressed by a number which the applied load must be multiplied by, to obtain the buckling-load magnitude.
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SESSION 34 - EigenValue Buckling Analysis - Problem Statement

  1. 1. Can we get more than 10 buckling load multiplier?
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  2. 2. Can we directly perform buckling Analysis without performing Static Analysis?
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  3. 3. If we change the load in static analysis does the value of buckling load multiplier changes?
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  4. 4. Buckling Analysis we get value of total deformation.
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  5. 5. Buckling Analysis gives the output of Natural Frequencies on which the component may buckle.
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SESSION 35 - Theory of Modal Analysis

  1. 1. The frequencies that occur in free motion of the component is natural frequency
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  2. 2. The component will deform in different directions at corresponding different frequencies.
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  3. 3. In Modal Analysis we find out the values of Natural Frequencies and modes of vibrations.
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  4. 4. The Natural Frequencies and the Modes of vibrations constitutes the Characteristic Solutions.
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  5. 5. The natural frequencies of a component are extracted in order to avoid the Resonance condition which can occur if natural frequencies of components matches with the excitation frequencies.
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SESSION 36 - Modal Analysis Problem Statement

  1. 1. Can we define Frequency Range in Design Modeler
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  2. 2. Modal Analysis gives Natural frequencies and corresponding mode shapes.
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  3. 3. Can we give the minimum and maximum frequency as 0 Hz.
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  4. 4. Can the Minimum Frequency 0 Hz.
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  5. 5. Can software calculate 0 mode shapes.
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SESSION 37 - Theory of Harmonic Analysis

  1. 1. There are how many methods to perform Harmonic Analysis?
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  2. 2. Harmonic analysis results are used to determine the steady-state response of a linear structure to loads that vary______________________.
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  3. 3. The transient vibrations, which occur at the beginning of the excitation, are accounted for in a harmonic analysis
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  4. 4. By finding these critical frequencies in Harmonic Analysis, we will be able to avoid the condition of Resonance due to _____________
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  5. 5. Mode-superposition method also allows solutions to be clustered about the structure's natural frequencies.
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SESSION 38 - Harmonic Response Analysis using Full (Direct) Method

  1. 1. Harmonic analysis results are used to determine the steady-state response of a linear structure to loads that vary sinusoidally (harmonically) with time.
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  2. 2. A Harmonic Analysis is a non-linear analysis.
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  3. 3. For Harmonic analysis, Mechanical offers two solution methods, Mode-Superposition (MSUP) & Full.
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  4. 4. A typical harmonic analysis will calculate the response of the structure to cyclic loads over a frequency range.
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  5. 5. Modal analysis is needed to use Full (Direct) method.
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SESSION 39 - Harmonic Response Analysis using Mode Superposition Method

  1. 1. Cluster results option produces output of frequencies nearer to the critical frequency.
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  2. 2. Mode Superposition method compared to Full/Direct Harmonic Response analysisis a time consuming method
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  3. 3. Can I give damping as an input in Harmonic Response analysis.
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  4. 4. User defined frequency option is available only in Mode Superposition method and not in Full Method of Harmonic Response analysis
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  5. 5. Harmonic Response analysis is used only for cyclic loading.
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SESSION 40 - Theory of Random Vibration Analysis

  1. 1. Random Vibration Analysis enables you to determine the response of structures to vibration loads that are random in nature.
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  2. 2. In Random Vibration Analysis,the excitation is applied in the form of Power Spectral Density (PSD).
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  3. 3. PSD is a table of spectral values vs. frequency that captures the frequency content.
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  4. 4. To perform Random Vibration Analysis, a modal analysis that extracts the natural frequencies and mode shapes is a prerequisite.
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  5. 5. The results output by the solver are one sigma or one standard deviation values.
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SESSION 41 - Random Vibration Analysis : Problem Statement

  1. 1. What is the minimum frequency range used while performing Modal analysis in Random Vibration Analysis?
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  2. 2. What is the maximum frequency range used while performing Modal analysis in Random Vibration Analysis?
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  3. 3. What are the number of mode shapes found in Problem Statementwhile performing Modal analysis in Random Vibration Analysis?
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  4. 4. In order to link Harmonic and Modal Analysis to get combined result, we need to drop Harmonic analysis system on ________________ of Modal Analysis System.
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  5. 5. According to the problem statement the Damping Ratio is ______________?
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SESSION 42 - Theory of Response Spectrum Analysis

  1. 1. Responses from Response Spectrum Analysis are deterministic minima
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  2. 2. SRSS is a method used in Response Spectrum Analysis..
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  3. 3. Earth Quake is an example of Response Spectrum Analysis
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  4. 4. Modal Analysis is a pre-requisite for Response Spectrum Analysis
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  5. 5. Response Spectrum Analysis gives results in the form of graph.
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SESSION 43 - Response Spectrum Analysis

  1. 1. Unlike a Random Vibration analysis, responses from a Response Spectrum analysis are deterministic maxima.
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  2. 2. For a given excitation, the maximum response is calculated based upon the input Response Spectrum and the method used to combine the modal responses.
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  3. 3. The combination methods available in Response Spectrum Analysis are ____.
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  4. 4. The excitation is applied in the form of a response spectrum.
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  5. 5. The excitation must be applied at fixed degrees of freedom.
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SESSION 44 - Theory of Steady : State Thermal Analysis

  1. 1. Steady-state thermal analysis to determine temperatures, thermal gradientsetc that vary with respect to Time.
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  2. 2. Engineers often perform a steady-state analysis after performing a transient thermal analysis, to help establishinitial conditions.
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  3. 3. A steady-state thermal analysis may be either linear, with constant material properties; or nonlinear, with material properties that depend on temperature.
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  4. 4. Thermal analysis usually can never be nonlinear.
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  5. 5. We cannot determine the Stress or Deformation directly by using Steady State thermal Analysis.
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SESSION 45 - Steady State Thermal Analysis- Problem Statement

  1. 1. Stress is an output of Thermal Analysis
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  2. 2. Thermal Analysis can be solved without using fixed support.
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  3. 3. Thermal analysis can be linked to structural analysis to determine stress and strain.
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  4. 4. Conduction is defined in Engineering Material in Thermal Analysis.
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  5. 5. Thermal analysis is a 1 Degree of freedom system.
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SESSION 46 - Theory of Transient Thermal Analysis

  1. 1. Heat treatment problems can be solved using Transient Thermal Analysis.
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  2. 2. Temperatures from a transient thermal analysis can be used as inputs to a structural analysis for thermal stress evaluation.
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  3. 3. Innon-linear transient thermal analysis, material properties stay constant.
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  4. 4. Transient thermal analyses determine temperatures and other thermal quantities that vary over time.
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  5. 5. A transient thermal analysis can be either linear or nonlinear.
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SESSION 47 - Transient Thermal Analysis : Problem Statement

  1. 1. According to the Transient Thermal Problem Statement, temperature is applied for __________ sec in each chamber.
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  2. 2. To view the Stress and deformation generated due to Transient temperature, we need to drop ______________ Analysis system on the solution of Transient Thermal Analysis system.
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  3. 3. The input of Film Coefficient is defined in _____________
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  4. 4. The Output Time Steps can be defined in _____________
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  5. 5. We cannot determine the TotalHeat Flux by performing Transient Thermal Analysis.
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SESSION 48 - Theory of Fatigue Analysis

  1. 1. Stress Life method is also called as High Cycle Fatigue
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  2. 2. Strain Life method deals with material whose stress strain parameters falls mainly under plastic region.
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  3. 3. Stress life method deals with crack initiation
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  4. 4. Gerber mean stress theory is used in Strain Life method
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  5. 5. Fatigue analysis gives factor of safety as an output.
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SESSION 49 - Fatigue Analysis

  1. 1. Fatigue provides life, damage, and factor of safety information.
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  2. 2. Fatigue uses two methods, stress-life and strain-life.
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  3. 3. The strain-life method works well in predicting fatigue life when the stress level in the structure falls mostly in the elastic range.
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  4. 4. When the cyclical strains extend into plastic strain range, the fatigue endurance of the structure typically decreases significantly; this is characterized as low-cycle fatigue.
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  5. 5. To perform Fatigue Analysis using stress life method, fatigue SN curves (Stress life curves) must be defined in material properties.
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SESSION 50 - Theory of Explicit Dynamic Analysis

  1. 1. The time step in an explicit finite element analysis must be ___________ than the Courant time step.
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  2. 2. The implicit methods can be extremely time-consuming when solving dynamic and ___________ problems.
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  3. 3. The maximum length of time (starting from zero seconds) to be simulated by the explicit analysis is called _____________
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  4. 4. Energy conservation is a measure of the quality of an explicit dynamics analysis.
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  5. 5. _____________ shows plots of X, Y and Z momentum and X, Y and Z impulse for the model
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SESSION 51 - Explicit Dynamic Analysis- Problem Statement

  1. 1. Which type of Dynamic Analysis did we solve in session 51
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  2. 2. Force can be given as an input in Dynamic analysis
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  3. 3. Dynamic analysis can be done on fluid body.
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  4. 4. Crash test is a type of dynamic analysis.
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  5. 5. Impact time is calculated based on the distance between the bodies.
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SESSION 52 - Theory of Computational Fluid Dynamics (CFD)

  1. 1. Computation Fluid Dynamics (CFD) is the science of predicting the fluid flow, heat and mass transfer, chemical reaction, and related phenomena.
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  2. 2. ANSYS CFD Solvers are based on the finite volume method.
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  3. 3. Axi-symmetric concept cannot be used in CFD.
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  4. 4. In Computation Fluid Dynamics (CFD), the discretized conservation equations are solved iteratively until convergence.
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  5. 5. Convergence is reached when changes in solution variable from one iteration tothe next are negligible.
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SESSION 53 - CFD : External Flow : Problem Statement

  1. 1. According to the problem statement, the aim is to find the velocity and pressure contour around the Aerofoil.
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  2. 2. According to the problem statement, the velocity of air around the Aerofoil is _____________
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  3. 3. It is necessary to create the named selection to define the Input and Output while performing CFD using Fluent.
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  4. 4. If the inlet velocity is less than Mach number 1.3 then we use Solver Type as ___________ while performing CFD using Fluent.
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  5. 5. If the inlet velocity is more than Mach number 1.3 then we use Solver Type as ___________ while performing CFD using Fluent.
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SESSION 54 - CFD- Internal Flow Analysis- Problem Statement

  1. 1. Internal Flow analysis can be performed on 3D and 2D objects
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  2. 2. Temperature can be defined for Inlet and Outlet flow both
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  3. 3. Poor quality elements are accepted by Ansys Fluent
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  4. 4. Convergence depends upon mesh only.
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  5. 5. Friction can be defined between two bodies in contact in CFD.
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SESSION 55 - CFD-Mixed Flow Analysis - Problem Statement

  1. 1. In Computation Fluid Dynamics (CFD), the discretized conservation equations are solved iteratively until convergence.
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  2. 2. Convergence is reached when changes in solution variable from one iteration tothe next are negligible.
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  3. 3. The accuracy of converged solution does not depend upon Mesh quality.
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  4. 4. In Fluent, you must define number of iterations for a steady analysis.
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  5. 5. A CFD analysis cannot be transient.
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SESSION 56 - Theory of Non-Linear Analysis

  1. 1. Material is a type of Non-Linearity
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  2. 2. Stress Strain Curve of all the materials is the same
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  3. 3. In Elastic region Stress and Strain are not dependent on each other
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  4. 4. Geometric non-linearity exists
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  5. 5. Non Linear can be solved in a single iteration
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SESSION 57 - Non-Linear Analysis Problem Statement

  1. 1. Strain Hardening is used to define the plastic region
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  2. 2. Non-Linearity is possible in static structural
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  3. 3. Bonded, No separation are type of contacts
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  4. 4. Force convergence depends upon the number of iterations.
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  5. 5. Non Linearity exists in three forms contact material and geometry.
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SESSION 58 - Theory of Composite Analysis

  1. 1. A combination of two or more materials that results in better properties than those of the individual componentscan be defined ascomposite material.
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  2. 2. The formation of matrix within which the secondary phase is imbedded is the Secondary phase of the Composite.
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  3. 3. A Matrix binds fibre, act as medium to protect fibre, prevent propagation of cracks.
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  4. 4. Composite construction consists of a stack-up of thin laminae where each lamina has unidirectional fibers in a matrix.
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  5. 5. The fiber directions in each lamina normally do not have different orientations, used to tailor the strength and stiffness of the composite to match the loading environment.
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SESSION 59 - Composite Analysis - Problem Statement

  1. 1. ACP-Pre can be used to define composite stacking in ANSYS Workbench.
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  2. 2. Equivalent stress results cannot be seen for each ply in composites.
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  3. 3. Equivalent stress results cannot be seen for the entire composite.
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  4. 4. After defining composite in ACP-Pre, you can only perform Static Structural Analysis.
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  5. 5. A composite is a material made up of layers of different materials.
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SESSION 60 - Theory of Contact Analysis

  1. 1. ANSYS Mechanical generates contacts by default (under “Contact Region”) if it detects two bodies in contact.
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  2. 2. To define a contact between bodies, “contact” and “target” must be defined.
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  3. 3. A contact pair can have flexible or rigid bodies, but the rigid side of the pair must always be the “Contact” side.
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  4. 4. If the “Contact” side of the contact pair has the flexible Stiffness behaviour then the “Target” side can be Rigid.
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  5. 5. “Bonded” contact means no sliding or separation.
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SESSION 61 - Contact Analysis - Problem Statement

  1. 1. ANSYS Mechanical generates contacts by default (under “Contact Region”) if it detects two bodies in contact.
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  2. 2. To define a contact between bodies, “contact” and “target” must be defined.
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  3. 3. A contact pair can have flexible or rigid bodies, but the rigid side of the pair must always be the “Contact” side.
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  4. 4. If the “Contact” side of the contact pair has the flexible Stiffness behaviour then the “Target” side can be Rigid.
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  5. 5. “Bonded” contact means no sliding or separation.
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SESSION 62 - Theory of Equivalent Radiant Power

  1. 1. Equivalent Radiant Power is the power emitted during vibration
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  2. 2. Equivalent Radiant Power is a part of Harmonic Analysis
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  3. 3. The Output graph is plotted vs Frequency
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  4. 4. ERP is same as ERPL
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  5. 5. ERP requires cyclic loading
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SESSION 63 - ERP Analysis - Problem Statement

  1. 1. To find out Equivalent Radiant Power in ANSYS, Harmonic Response Analysis is a must.
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  2. 2. To find out Equivalent Radiant Power in ANSYS, Harmonic Response Analysis is a must.
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  3. 3. In ANSYS, Equivalent Radiant Power Level is expressed in W units.
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  4. 4. Equivalent Radiant Power is the amount of power emitted due to vibrations.
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  5. 5. Equivalent Radiant Power Level is the amount of sound power levels emitted due to vibrations.
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SESSION 64 - Theory of Topology Optimization

  1. 1. Topology Optimization is a design tool for determining shapes that can satisfy design criteria while minimizing or maximizing an objective such as Minimize Stiffness.
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  2. 2. Topology Optimization is needed in order to reduce the weight:
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  3. 3. After the topology optimization is solved, the user cannot post-process the results to show optimized topology density isosurface plots.
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  4. 4. Topology Optimization finds the best distribution of material given an optimization goal and a set of constraints.
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  5. 5. Minimizing mass or volume is one of the design criteria of Topology Optimization.
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SESSION 65 - Topology Optimization - Problem Statement

  1. 1. Output from a Topology optimization analysis is an optimized design.
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  2. 2. Output design from a Topology optimization analysis can be converted into a geometry.
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  3. 3. Topology Optimization performs a series of iterations to find out optimum design.
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  4. 4. Objective & Response Constraint parameters are required to perform Topology Optimization.
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  5. 5. In Topology Optimization, multiple Response Constraint parameters can be defined.
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