Week 8-3D Tetra Meshing Challenge

Aim: To simulate the Bird-strike on Aero-engine using explicit analysis in Ls-Dyna Instructions need to followed Bird Strike in Aero Engine:  This is a classic nonlinear transient dynamics problem similar to car crash and mobile drop. While accurate modelling of the problem requires advanced techniques such as SPH,…

Joint creation using Ls-Dyna Aim: The objective of this project is to create different types of joints, namely translational joint, planar joint, revolute joint, spherical joint or ball joint and cylindrical joint in Ls-Dyna. Note: These joints are created between two rigid or deformable body. In Ls-Dyna it is not required…

Aim: To perform the material modelling from the data given and calculate the money-Rivlin and Ogden material constants and compare them both using stress-strain data from a Dog-bone specimen tensile test with 100% strain. Theory:  Hyper elastic material model Hyper Elasticity: It is well known that there are several…

Aim: To Model a material card from the raw data available, and verify it by comparing the results with input defined. Objective: To extract the stress-strain data points from the image and input them into ls dyna, and compare the result of the simulation with that obtained from the raw data. Theory: While modelling a material…

Aim: To perform the Mass Scaling technique during solving the simulation by trial and error and then compare the results, also need to perform the same simulation with implicit approach. Objectives: Using the mass scaling technique to reduce the simulation time. Perform the simulation with the Implicit approach Note: Ensure…

Aim: To perform the Head Impact calculation and calculate the HEAD Impact Criterion (HIC) value for the following cases. Objective: To perform Head impact analysis and calculate the HIC (HEAD Injury criteria/coefficient) value for the following cases Case1: Simple Head Model and Rigid Wall Case2: Child Head-Form and Rigid…

Aim: Calculate the stretch ratio of a cubic block subjected to tension, used with ELFORM (-1, -2,1,2) using Ogden Material Model in LS-DYNA, and compare the uniaxial plot of stress vs stretch ratio plot among each case. Problem Statement: To compare the results, obtain from the simulation of solid block using ELFORM -2,…

Aim: To create the spot weld using Beam and Solid element in Ls-Dyna and run the model to compare them and study the different way of modelling a spot weld in Ls-Dyna   THEORY: Spot Welding is a type of resisting welding technique comes under the fusion welding category where heat and pressure both are applied in order…

Aim: To create a Deck-Setup for the Crash Box and request for the animation file and time history file, and change the thickness of the crash box from 1.2mm to 1.5mm   Different assumption related to this case The crash box should crash into the rigid wall *Rigid Wall_Keyword Material for the crash box is steel. The…

Aim: To create a solver deck setup for the Drop-Down case of Cell Phone with required set of results. Abstract: In this assignment we are going to study the case of Cell Phone Drop simulation. This will be done by setting up the necessary keyword to mimic the actual conditions, we will also assign the initial velocity…

Aim: To understanding about the Implicit and Explicit approach to solve the dynamic problem and static problem or event and solve the equation `F(u) = u^3+〖9u〗^2+4u` by using both implicit and explicit method with residual problem of 0.01   Implicit and Explicit Scheme: These schemes or methods is used to…

Consistency of units in LS-DYNA Aim: Convert the given measurement into different system unit and findout their conversion factor. Theory: Different industries use different system of units as per their convenience. The units for the basic measurement quantities, mass distance and time - dictate how the other derived…

# Assignment 7   Side Pole Crash Analysis on BIW Model     Aim: To create a deck setup for SIDE POLE CRASH OF BIW model and request for TH (Time History file), and by observing the simulation give suggestion for what can help for reducing fuel tank intrusion.   Objectives: The objective of this project…

#Assignment 6   Frontal crash of BIW Structure of the CAR      Aim: To create a deck setup for FRONTAL CRASH OF BIW of the car and request for the TH(Time History file)   OBJECTIVE:  Check unit system and either follow [Mg mm s] or [Kg mm ms].   Create appropriate interface friction…

Assignment 5 RADIOSS INTERFACES & STUDY OF EFFECT OF NOTCHES   Aim: To mesh the bumper component with target element size of 6mm and also doing a study of RADIOSS interfaces and effect of notches, by simulating the crash tube component.   Objective: Perform geometrical cleanup on the bumper and mesh the bumper…

Assignment no 4 RADIOSS Material Law Challenge   Aim: To study the different material cards and their application in RADIOSS, and how to apply them in the RADIOSS Objective: Performing a simulation of sphere pressing on plate for different material laws and comparing the results. There will be 7 cases that we have to perform…

# Assignment: 3   Aim: To study the crash Analysis of S-Beam with or without recommended shell formulations in Radioss, and comparing the result with base simulation and improved shell element properties.   Objective: Various changes and steps need to done in order to achieve the desired outcome Using the crash…

#ASSIGNMENT 2   Aim: Performing the Radioss Engine and starter file manipulation and also meshing the given components with Tetra and Hexa-meshing   Objective: Various calculations and steps need to done in order to achieve the desired Outcome Check the material property of the rail component and calculate the…

# Assignment 1   Aim: To mesh the given component with target element size of 5 units and assigning the thickness to the component, also, it should have to be follow the quality criteria as mentioned below. Target Element length: 5 units Minimum Element length = 3 units Maximum Element length = 7 units   Theory:…

Project-2  Aim: For the given assembly, check for the geometrical errors and mesh with the given element Quality criteria. Common Note: Use Volume mesh for Tyre and Rim with below Quality criteria. (Use Tria Element) Use mid surface only when the thickness is uniform and less than 5 mm. (Use Mixed elements) Quality…

 2D-Meshing of IP-Substrate of the car Aim: For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component, thickness has to be assigned.   S.No  Quality Criteria  Value  1 Target/Average length   4 2 Minimum Length  2 3 Maximum Length  6 4 Aspect …

Basic of Morphing (ANSA)   Morphing ANSA encompasses a full – fledged Morphing menu which is completely integrated with ANSA’s interface and doesn’t require any additional module installations or licenses. The functions of the Morphing menu can be used to efficiently re-shape both FE and/or Geometry…

Connection in ANSA   Aim: For the given Rear door FE model, creating and apply different PIDs for different components. And performing suitable connections to it.   Model:     Side Door Model of Car   Introduction: 1D Elements: 1D elements are simple connection between the nodes Standard 1D elements…

Tool Test 2 (Solid meshing of Intake Manifold ANSA )    Aim: For the given intake manifold component, check the geometrical errors and meshing the surface with the given 2D element quality critera as mentioned below.   2D Quality critera: Target or average length: 3 S.No  Quality criteria …

 Week 5 (Solid Meshing in ANSA)   Aim: To create the Tetra-mesh for the rear-view mirror component and it should follow the quality criteria as mentioned below   For 2D element quality criteria S.No Quality criteria Value 1. Target/Average length 1 2. Minimum length 0.5 3. Maximum length 2   Quality…

TOOL TEST 1 ANSA   Aim: Extract the middle-surface of the given component and mesh the same with, given element quality criteria as mentioned below and also assign a proper thickness to it.   Quality Criteria:  S.No  Quality Criteria  Value  1 Target/Average length   4 2 Minimum…

Week 4 Challenge ANSA 2D Meshing of Plastic Bottle Cap   Aim: To extract the middle-surface of the plastic bottle cap and mesh the same with, given element quality criteria as mentioned below and also assign a proper thickness to it.    Quality criteria: S.No  Quality Criteria  Value  1 Target/Average…

Week-3 challenge (ANSA)    Aim: For the given Hood-Model taking the mid-surface of the component, and also mesh the middle surface with given element quality criteria as mentioned below     S.No   Quality Criteria  Value  1 Target/Average length   5 2 Minimum Length …

Aim: To mesh the wheel holder of the car and it should follow the parameter as shown below, and also assigning a thickness to it. Target Element Length = 5 Units   S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length…

Week 12 Project   Aim: Meshing the plastic component of the side door of the car, and assigning the thickness to it, and it should follow the given criteria as mentioned below   Target Element Length = 4 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper …

Connectors & Debugging connectors   Aim: Mesh the given model and it should follow the quality parameters, also create the connector to attach the various part of the model.   Target Element size - 5 Units   S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper     …

Aim: To create a Tetra-mesh for given component with the following quality criteria.   Tetra-Mesh Generation Method: 2D to 3D Conversion Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units  Tet collapse: 0.15 Model-1       Tetra-Mesh Generation Method: Quick Tetra Mesh/ Volume…

Aim: Following the below-mentioned quality criteria, mesh the component given below and assign thickness: Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle…

Objective: Meshing the given component with the size of 5 units. Creating 1D element on the following component with given cross-section and DOF’s Rod Element: Translational DOF should be constrained with RBE2 link Cross-section:  BOX Dimensions: a = 12mm, b = 10mm, and thickness t = 0.75mm Beam Element: All…