Week-7 Head Impact

TESLA ELECTRIC CARS: Introduction: Tesla is an electric vehicle (EV) company founded by Elon musk, JB Straubel, Martin Eberhard, Marc Tarpenning and Ian Wright in 2003. The company specialized in producing electric vehicles using lithium-ion battery for energy storage and subsiding the establishment of solar panels. Compared…

Meshing of Hood Challenge: Aim: Meshing of Hood challenge. Procedure: There are 4 components of the Geometry which is downloaded which are shown in the image below: Inner extract: Outer extract: Hinje enforcement: Latch enforcement: Final image of model appears as: Now we will extract middle surface of each component…

1D Element Creation Challenge: Aim: Creation of 1D elements: Procedure: Download the model provided above: Import the geometry undeer import option in IGES format as shown in the image below: Go to the midsurface option under Geometry tab to extraction option below auto extract and select the skin offset for both…

Aim: Buckling study with respect change in shape of support structures: Procedure: Draw a square box with 100X100 mm crossection and 40 mm thickness in the model as shown in the image below: Case 1: Apply Cylindrical support structure with 7 mm as radius with length of 50mm as shown in the image below: Now apply Buckling…

Aim: Performance of three different cross-section beams under bending load. Procedure: Case1:Rectangular Beam: Draw the rectangular model with 45 & 80 mm dimension along the front plane and extrude it to the length of 400 mm as oer the question. Select the Static method of analysis. Now apply Alloy steel to the…

Study of cantilever beam with different cross-sections like circular, rectangular and I section and to find out the effect of cross-section on the deflection of the beam using FEA technique using Ansys Workbench and results has to be verified using strength of material deflection equations: Aim: Study of cantilever…

Crush analysis of aluminium Tube: Aim:Crush analysis of Aluminium tube with the rigid wall. Procedure: Material selection of Structural Steel with material parmeters as shown in the image below: Aluminium Alloy NL is selected from the list of General Non-linear materials for the tube to be crushed  with materialm…

Impact of rigid ball on plate: Aim:Impact of rigid ball of diameter of 10mm made up of steel of different intial velocities on plate of 100x100x5 `mm^3` made up of Aluminium Alloy NL. Steps to be followed: Explicit dynamic method is choosen for the study of impact on plate. Material selection: Aluminium alloy NL is…

Bird Strike in Aero Engine: Aim: Simulation of bird strike in Aeroengine by using different mandatory cards in different files,parts,sections with proper numberinga etc. Steps followed: All units taken in Kg mm ms depending on conversion factor of Aluminium material provided in the question. Download the model provided…

Joint creation and Demonstration: Aim: Joint creation for rigid and deformable bodies Types of joint: Revolute joint: Steps followed: All units taken here are in kg mm ms. Case 1: REVOLUTE JOINT FOR RIGID BODIES: Meshing: First open the LS Prepost go to mesh option under which go to Shape mesher with 4N Shell with…

 Hyperelastic Material Models Aim: To create a Hyperelastic material model using MAT 077 H_Hyperelastic rubber using Mooney Rivlin & Ogden law and compare its value with respect to the provided Engineering Stress & Engineering Strain in the form of graph. All units used here are in Kg mm ms. Steps followed:…

Material Modeling from Raw Data Aim:Material modeling using the diagram of the true stress-strain curve of graphite iron casting. Two curves are there for different material structures. We had taken the curve1 and used the data to create either a MAT_024 Piecewise Linear Plasticity model and then validate it with true…

Mass Scaling: Aim: Mass scaling to reduce the runtime of a model and ensure the stability of mass scaling. The hard limit on mass scaling is 8% and stability should be completely intact. This means that two simulations, one with mass scaling and one without should behave exactly the same way. The submission should contain…

Head Impact: All units are taken in kg mm ms based on conversion factor of models imported. Aim: To determine the Pedestrian protection on the we look for imparting minimum injury to head, upper leg (thigh), and lower leg (including knee) in case of an accident with a human subject. These tests are usually done at a lower…

Calculate the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model: Aim: Calculate the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model: Steps followed: Preprocessing:  First go to the Mesh button inside the toolbar located at the right side of screen and then select…

Modelling Spotwelds challenge: Aim: To model spotwelds for the given assembly of parts and run a crash test to compare axial and shear forces between the spotwelds made up of beam & solid elements of same material of spotweld. Steps followed: Case 1: Shell element for spotweld. Import the model in .k format after…

 Crash Box Simulation: Aim: Simulation of a crash test for a crash box on a rigid wall for which mesh is given & steel material is taken with elstic material properties. Steps followed: Import the file containg model of box to be crashed under file option-LS Dyna Keyword file in .k format as shown in the image…

 Drop test Challenge: Aim: To perform a drop test in LS-Dyna of cellphone by creation of appropriate section,materials assignment,Boundary canditions,controls,sets etc. Steps followed: Import the model named as Drop_Test_onlymesh using import under File of LS Prepost as shown in the image below: Final imported model…

 Explicit and Implicit Analysis: Aim:  Write a detailed report about Implicit and explicit methods. Solving the partial differential equation using Implicit and explicit methods methods. Implicit and explicit methods: For all nonlinear and non static analysis, incremental loads are needed to set up equillibrium…

Given units are: MASS 1kgLENGTH 1mTIME 1sFORCE 1NSTRESS 1PaENERGY 1NmDENSITY 1Kg/m3YOUNG'S Modulus  210GPaVelocity 56.33KMPHGRAVITY 9.8m/s2 Force=(MassxLength)/Time^2,Energy=MassxLength^2/Time^2,Young's modulus=Mass/(LengthxTime^2) Stress=Mass/(LengthxTime^2),Density=Mass/Length^3,Velocity=Length/Time,Gravity=Length/Time^2.…

Aim: Side crash challenge. Objective: To check the unit system and ethier follow Kg,mm,ms unit. To create an appropriate interface of friction 0.2 with recommended parameters. Check penetrations & intersections. Correct rigid body if any isssues. Create a rigid wall with friction 0.1 as per the reference model.…

Frontal crash challenge: Aim:  To perform frontal crash on vehicle against rigid wall in Hypermesh. To simulate the crash behaviour in Hyperview & simulate the results. To plot the sectional & axial forces at different location. To obtain intruion result on Dash wall and plot them in Hypergraph. To obtain…

To mesh the bumper component using Hypermesh and also run the simulation on crush tube by using Radioss. Aim:  Create the mesh for bumper assembly,mesh size should be 6mm.  Run the crash tube model as it is. Change the Inacti=6 and run. Create the type 11 contact and run. Remove both notches  and remove…

 RADIOSS Material Laws Challenge: Aim: To apply different material types to the simulation model & compare the behaviour of model with different element and failure formulations. Steps followed: Case 1: Import the provided 0000 .rad file in Solver deck as shown in the image below: Check the units under Card…

Comparison of results with base simulation and improved shell element properties: Aim: Comparison of results with base simulation and improved shell element properties. Steps followed: Import the given .rad file in hypermesh as shown in the image below: Case 1: Now the run time is changed as per question to 55 ms…

Radioss Engine file editing & 3D mesh challenge: Aim:  To check the material properties of rail component & calculate speed of sound in steel rail. To calculate time taken by shock wave to travel from one end of the rail to the other end of rail of length 1000mm. To edit the engine file so that stress wave…

2-D Meshing Challenge: Aim:  Carryingout the geometry cleanup operation. Extract midsurface. Clean midsurface geometry. Ignore holes less than dia 5mm. Create 2D mesh with target length 5mm, min 3.5mm max 7mm. And assign proper thickness, by creating a generic property. Save in .hm format. Steps followed: Part 1:…

Car crash simulation: Aim:  Performing parametric study on car crash simulation using three different values of thickness for the car body. Steps followed: 1)Material selection: Wall is selected to be made up of Structural steel with material specifications as shown in the image below: Car body is selected to…

Simulation of Bullet Penetration into Bucket. Aim: Simulation of bullet penetration into bucket made up of Copper Alloy NL,Magnesium Alloy NL and Aluminium Alloy NL. Steps followed: 1) Material selection: Bullet: Material selected for Bullet is Tantalum with material specifications as shown in the image below: Case…

Expilicit Dynamic analysis of Machining with a Planar. Aim: Expilicit Dynamic analysis of Machining with a Planar by taking Steel 1006 material for workpiece and veloctiy of cutter for case 1 as 20000 mm/s and case 2 as 15000 mm/s. Steps followed: 1) Material selection: Material of workpiece & cutter reamins same…

Tension test and Torsion test on the specimen provided. Aim: Performing the tension and torsion test on the specimen provided with Steel 1006 material. Steps followed: 1) Material selection: For both tension & torsion test Steel 1006 material is selected from the list of Explicit materials in Engineering data…

Bending analysis on wires made up of different materials: Aim: Performing Bending analysis on wires made up materials of Copper Alloy NL, Aluminium Alloy NL and Magnesium Alloy NL. Steps followed: 1)Material Selection: Wires: Structural Steel is choosen as material for wheel & lever in all 3 cases with material…

Transient structural analysis on a worm gear assembly. Aim: Performing transient structural analysis on worm gear assembly by taking half part of gear with worm wheels. Steps followed: 1)Material selection: Structural Steel is choosen as material for all the components with material specifications as shown in the…

Transient structural analysis on Double Universal Joint wing spring: Aim:  Transient structural analysis on a double universal joint with a spring using three different materials of Structural Steel, Stainless Steel and Titanium alloy at the fixed joint of spring. Steps followed: 1)Material Selection: Case 1:…

Transient Analysis on Piston & Cam: Aim: To perform transient analysis on Piston and Cam mechanism model with frictionless contact,frictional contact of given frictional coefficients of 0.1 and 0.2. Steps followed: 1)Material Selection: Structural steel is choosen as material for Barrel,Cam and its Follower with…

Simulation of bending of iPhone: Aim: Bending of iPhone frame & display challenge is performed taking different materials & their properties mentioned in the cases below. Steps followed: Case 1: 1) Material selection: a)Polyethylene:Polyethylene is selected in Engineering data from the list of General materials,…

Simulation of Sphere pressing over the Flat Plate: Aim: Simulation of Sphere pressing over the flat plate with Structural Steel NL material for both & maximum displacement of the sphere along negative Y axis of 4mm, in order to calculate maximum directional plastic deformation. Introduction: In order to make…

Rolling operation analysis on Copper Workpiece: Aim: To perform Rolling opeartion structural analysis on workpiece made up of Copper Alloy NL. Introduction:  Rolling:Within manufacturing metal forming category,Rolling is one of the most widely used process were metals are deformed in plastic zone with the help…

Strength analysis on Weld joints of different materials: Aim: To perform Strength analysis on weld joints of Stainless Steel,Aluminium Alloy & Bronze cast materials. Steps to followed for all the cases: 1)Material Selection: Case 1: Stainless Steel is selected for the plates & weld beads with the propeties listed…

Sheet metal Bending Stress analysis on Punch & Die System:  Case 1: Aim: Performing Sheet metal bending stress analysis on three different materials of Aluminium alloy 1199,Copper alloy NL & Magnesium alloy NL and comparing the Total deformation,Equivalent Stress and Equivalent Strain on sheet. Steps Followed:…

Static structural analysis on Railwheel & Track Assembly: Case 1:Static structural analysis on bearing loads on wheel hub of 100000N & 500000N: Introduction: Railways are the one of the most transportation, that must be analysed properly so that it can provide service for the longer period of time without failures.Railwheel…

AIM: To perform Grid Dependency test for the Bevel Gear of mesh size 6mm,5mm or 7mm.       Importing a CAD model with no errors in geometry and viewed in Spaceclaim. Setup for analysis: Contact setting: Structural Steel material is choosen for Bevel gear assembly system with the contact properties of: 1)Type:Frictional…

Stress analysis on spur gear assembly of different materials: Aim:    To perform stress analysis on Spur gear assembly made up of 3 materials of cast iron,cast steel & bronze cast with material specifications shown in the image below: Cast Iron: Cast Steel: Cast Bronze: Stress Intensity: Stress intensity…

AIM: To perform static structural analysis on two plates of the same dimensions but with a different numbers of holes and analyze the stress, deformation etc. acting on the plates. Procedure followed: Case 1: 1.)Design Plate A with a single hole. 2.)Meshing Case 2: 1.)Design Plate B with 3 holes. 2.)Meshing 3.)Compare…