Week - 8 Mass Scaling

Week - 10 Hyperelastic Material Models Aim: Calculation of the Mooney Rivlin and Ogden material contstants and comparison of stress strain data is done using dogbone specimen. Procedure: Given data Eng Strain Eng Stress 0 0 0.025 0.0446 0.05 0.0867 0.075 0.127 0.1 0.164 0.125 0.2 0.15 0.234 0.175 0.267 0.2 0.298 0.225…

Week - 9 Material Modeling from Raw Data Aim: Using the given true stress-strain curve of graphite iron casting and creating MAT_024 material model and then validating it.  Procedure: The given curve is shown below: The given true stress strain curve data is digitized for curve 1 and confirming it matches with…

Project - 2 - Bird Strike Aim: This project bird striking a blade of aero engine is a classic nonlinear transient dynamics problem similar to car crash and mobile drop. While accurate modeling of the problem requires advanced techniques such as SPH, this problem is solved using generic explicit solver. Procedure:…

Week - 8 Mass Scaling Aim: Use of Mass scaling to reduce the total time taken to complete the simulation in explicit analysis and also in implicit analysis. Introduction: The models with high complexity takes more time to solve and so to reduce the time taken to solve, mass scaling technique is used where we know…

Week-7 Head Impact Aim: Simulate the given model with different bodies by assigning the appropriate key cards. Explanation:  The given model has to be run in three steps First the simple head impact model is simulated with crash on Rigid wall Next the simple sphere is replaced by given head foam model and is…

Week-6 Calculate the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model. Aim: Simulate the given model with different elemental formulations by assigning the appropriate key cards and calculate strech ratios. Explanation:  The given model has only the material data and this tensile.k…

Week - 5 - Modelling Spotwelds Aim: Simulate the given model with beam and solid spotweld by assigning the appropriate key cards. Explanation:  The given model has only the nodes and element data and this spotweld.k file is imported into LS Dyna prepost from file -> open For this simulation to run we need…

Week - 4 - Crash Box Simulation Aim: Simulate the given Crash box model by assigning the appropriate key cards. Explanation:  The given model has only the nodes and element data and this drop_test.k file is imported into LS Dyna prepost from file -> open For this simulation to run we need a certain keycards…

Week - 3 Drop test Challenge Aim: Simulate the given drop test model by assigning the appropriate key cards. Explanation:  The given model has only the nodes and element data and this drop_test.k file is imported into LS Dyna prepost from file -> open For this simulation to run we need a certain keycards to…

Week - 2 - Explicit and Implicit Analysis A Differential equation can be solved by using either Explicit or Implicit Analysis by integrating with time using time step intervals. They are best suited to be used for solving dynamic problems. Explicit Analysis:  In Explicit analysis, equilibrium doen't need to converge…

Week - 1 - Consistency of Units AIM: Converting given measurements to the required unit systems Explanation: Here the detailed calculation is shown for conversion to gm/mm/ms unit system Mass: 1Kg = 1000 gm 1m = 1000 mm 1s = 1000 ms Force: Given Force = 1 N  Since 1 N = 1 `(Kg*m)/(s2)` and conversion by…

Assignment 7-Side Pole Crash Simulation Challenge Objective: Simulation of given car model with the given parameters for requested output. Case Setup and Execution: The given car model is first imported into Hypermesh from File -> Import -> Solver Deck 1) After importing the unit system is checked from Model Browser ->…

Assignment 6-Frontal Crash Simulation Challenge Objective: Simulation of given car model with the given parameters for requested output. Case Setup and Execution: The given car model is first imported into Hypermesh from File -> Import -> Solver Deck 1) After importing the unit system is checked from Model Browser…

Assignment 5-RADIOSS Interfaces & Study of Effect of Notches Challenge Objective: Simulate the given crush tube model with the given different case parameters and meshing of the given bumper assembly. Meshing of Bumper Assembly: Importing of Bumper_System hm file into Hypermesh and cleaning of the imported geometery…

Assignment 4-RADIOSS Material Laws Challenge Objective: Simulating the Rupture model with the given 7 cases Case Setup and Execution: The initial FAILURE_JOHNSON_0000.rad file is imported into Hypermesh from File -> Import -> Solver Deck and selecting the file. After importing, for Case 1 the simulation is run keeping…

Assignment 3-2D Element Formulation Challenge Objective: Simulating and comapring the crash beam with given two different parameters. Case 1 Setup and Execution: The files given are radioss files, the run time and the animation steps can be edited from either opening the Elemental_Formulation_Shell-3_Assignment_0000.rad…

Assignment 2-RADIOSS Engine File Editing & 3D Meshing Challenge RADIOSS Engine File Editing Questions: Q(1). materials properties required for calculation of speed of sound in steel as per time step calculations are Elastic modulus and density `c = sqrt(E/rho)` where E is Elastic modulus and `rho` is density From given…

Assignment 1-2D Meshing Challenge Objective: Checking and performing the geometry cleanup for the given three models, extracting the mid surfaces, 2D meshing of the extracted mid surfaces using the given quality criteria and assigning the thickness to the created mesh. Given Models: Case 1:- Part 1   Case 2:-…

Project 2: Meshing on the suspension Assembly Aim: Checking the given Suspension model for geometrical errors and mid surface extraction for component with uniform thickness components and tetra meshing of the other components with the given mesh quality criteria in addition to connections. Given model: Suspension model…

Project 1 - 2D meshing on the half-instrumental Panel Aim: Checking for the geometrical errors, taking the mid surface, and meshing the given model with given element Quality criteria. (Refer to the table below for the Quality criteria) Given sheet metal model: Half-instrumental Panel model Given Quality criteria: S.No…

Week 8 Challenge: Morphing Model 1 Morphing Aim: Performing Morphing operations on the given model 1   model 1: Procedure: Morphing of the component is done through various ways of which free-free morphing is discussed. Here a box is generated around the selected area using Classic Mesh -> Boxes -> New…

Week 6 Challenge: Creating connection for Rear door Aim: Assigning different PIDs for different components and deploying connections between different components for the given Sode Door meshed model. Given meshed model: Side Door meshed model Procedure steps followed: Assigning different PIDs for different components.…

Time taken : 3 hours and 45 minutes

Week 5 Challenge: Solid Meshing Aim: Checking the given Rearview Mirror model for geometrical errors and tetra meshing of the model with the given mesh quality criteria. Given model: Rearview Mirror model   Parts include in the model: 1.     2.  3.  4.   Given 2D mesh Quality criteria:…

Model 1 - 7 hours Model 2 - 4 hours

Week 4 Challenge: 2D Meshing of Plastic Components Aim: Checking for the geometrical errors, taking the mid surface, and meshing the given Plastic Bottle Cap model with given element Quality criteria. (Refer to the table below for the Quality criteria) Given sheet metal model: Plastic Bottle Cap model Given Quality criteria:…

Week 3 Challenge: 2D Meshing of Sheet Metal Aim: Checking the given hood model for geometrical errors and taking mid surfaces for all components, 2D meshing of the extracted mid surface with the given mesh quality criteria. Given sheet metal model: Hood model   Parts included in the model: Hinge reinforcement - Thickness:…