Assignment 6-Frontal Crash Simulation Challenge

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…

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 the top & bottom bracket and then…

Please find attached the model.  

Aim: To mesh the Surfaces of the given model with 2D elements as per the given Quality criteria and use tetra elements to mesh the Volumes defined in the model as per the quality criteria for Volume meshing.   Procedure: 1. Check the geometry for any errors. 2. The elements quality criteria for both shell and…

Please find the models attached.

Aim: The aim of this challenge is to perform the 2D meshing of the given components after performing the geometry cleanup and extracting the midsurface. The elements are supposed to meet the mentioned quality criteria. Procedure: The given model was opened in ANSA using File-open command.   The geometry check was performed…

Aim: The aim of this challenge is to perform the 2D meshing of the given components after performing the geometry cleanup and extracting the midsurface. THe elements are supposed to meet the mentioned quality criteria. Procedure: 1. The given model was opened in ANSA using File-open command. 2. The geometry check was performed…

Objective: The aim of this challenge is to perform a a frequency analysis of a bridge to find out the natural frequencies and corresponding mode shapes. Such analysis plays critical role in safety of the bridges. Case setup and execution: First the parts of the assembly, namely, pillar and road were created in the Solidworks.…

Objective: The aim of this challenge is to perform a simulation of the bending of a beam and comapre the results for 3 different cross-sections in terms of stress, strain and displacement values. Case setup and execution: For all the 3 cases following procedure was followed: First the cross section of the beam was sketched,…

Objective: The aim of this challenge is to simulate a cantilever beam problem to find the total deformation of the beam for different cross-sections like circular, rectangular and I-section. Case setup and execution: First the Ansys workbench was opened and the static structural module was opened. Then the design modeler…

Objective: The aim of this challenge is to simulate the imapct of a rigid ball on a plate of aluminium alloy NL to find the total deformation of the plate for 3 different velocities of the ball. Case setup and execution: First the Ansys workbench was opened and the explicit dynamics module was opened. Then the design modeler…

Objective: The aim of this challenge is to simulate a crushing of an aluminium tubeby a rigid wall and to find the total deformation and stress experienced by the tube. The simulation is to be run for 4 different values of velocity of the rigid wall. Case setup and execution: First the Ansys workbench was opened and the…

Objective: The aim of this challenge is to simulate the situation of a car crash. The challenge involves 3 cases - a parametric study using 3 different values of thickness for the car body. The equivalent stress and total deformation are to be determined. Case setup and execution: First the explicit dynamics module was…

Objective: The aim of this challenge is to simulate the situation of a bullet penetrating a bucket. The challenge involves 3 cases - in each case the bucket is made of a different non-linear material. The equivalent stress and elastic and plastic strain are to be determined. Case setup and execution: First the explicit…

Objective: The aim of this challenge is to simulate the working of a planar operation and find out the total deformation, equivalent stress and temperature in the workpiece. Case setup and execution: First the explicit dynamics module was opened. In the engineering data, steel 1006 material was added to the material library.…

Objective: The aim of this challenge is to simulate a tension test and a torsion test on a specimen and find out the equivalent stress, total deformation and temperature of the specimen. Case setup and execution: Tension test First the explicit dynamics module was opened and the steel 1006 material was added to the material…

Objective: The aim of this challenge is to simulate the working of a worm-gear mechanism and find out the stress, total deformation and the equivalent strain for the model. Case setup and execution: First the transient structural module was opened. The geometry was imported. The geometry was edited in Spaceclaim to cut…

Objective: The aim of this challenge is to simulate the working of a universal joint and find out the equivalent stress and total deformation in the model. Also the aim was to analyze the effect of 3 different materials on the results, namely, structural steel, stainless steel and titanium alloy. Case setup and execution:…

Objective  The aim of this challenge is to simulate the working of the cam-follower mechanism and find out the stress, strain and the directional deformation in the system. Case setup and execution: First the transient structural module was opened and the geometry was imported. In the Ansys Mechanical, the model was…

Objective: The aim of this challenge is to simulate the bending of an iphone and find out the deformation, stress and strain generated. The challenge involved 2 cases: first, in which given model was run as shown in the video and second, in which the position of the bottom fingers was changed as well as fatigue life needed…

Objective: Ther aim of this challenge is to simulate the pressing of a sphere in a plate and find out the plastic strain in the plate. Case setup and execution: First the static structural was opened. The structural steel NL was added to the library. Then the geomtery was imported. In the Ansys Mechanical, the model was…

Objective: The aim of this challenge is to simulate the sheet rolling operation and find out the equivalent stresses in the model, plastic strain in the workpiece and the directional deformation generated in the workpiece. Case setup and execution: First the Static structural module was opened in Ansys Workbench. In the…

Objective: The aim of this challenge is to simulate the wire bending operation and find out the equivalent stresses and strains generated in the wire. Case setup and execution: First the Static structural module was opened in Ansys Workbench. In the engineering data, from the general non-linear materials, copper alloy…

Objective: The objective of this challenge is to verify the strength of the weld joints in 3 different cases described in the question. Case setup and execution: Case 1: First Static structural module was opened in Ansys Workbench. The engineering dat was opened to add the stainless steel, aluminium alloy, copper and bronze…

Objective: The aim of the challenge is to perform the simulation for the sheet metal bending operation, using aluminium alloy, copper alloy and magnesium alloy. Also for the aluminimum alloy sheet, frictional coefficient and mesh sizes were changed to see the difference in the results. Case setup and execution: First the…

Objective: The aim of the challenge is to simulate the motion of a rail wheel on a track and find out the total defromatino and equivalent stresses & strains. Case setup and execution: First, the Ansys Workbench was opened and the given model of the railwheel and track was imported in the Static Structural module.…

Objective: The aim of the challenge is to perform the simulation to know the total deformation and equivalent stresses and strains in the bevel gear pair provided. Grid dependency test: Here, grid refers to the mesh on a component. Grid dependency test tries to ascertain how the results of a simulation change with change…

Objective: The aim of the challenge isto perform the simulation to know the total deformation and equivalent stresses and strains in the spur gear pair provided. Case setup and execution: Case 1: First the "Static structural" module was opened in Ansys Workbench. In the "Engineering data", "Egineering data sources" tab…

Objective: The objective of this challenge is to perform a static simulation of tensile load on a steel plate with holes. The challenge involved 2 cases with different geometries. Case setup and execution: First the Ansys Workbench was opened and Static structural module was selected. In this the geometry was created using…

Objective: The objective of this challenge is to perform a side pole crash analysis of a vehicle against a rigid pole. The results to be obtained were the forces at given cross sections in different components, the intrusions of the given nodes and the velocity of a node on the door of the vehicle. Case setup & execution:…

Objective: The objective of this challenge is to perform a frontal crash analysis of a vehicle against a rigid wall. The results to be obtained were the forces at given cross sections in different components, the acceleration of rockers at B-pillars and the displacement of the given nodes on the dash wall. Case setup &…

Objective: The aims of the challenge are to learn how to model contacts in Hypermesh and to study the impact of notch on the stress distribution in the component. Thereby, the aim was also to learn how to create and remove notches from the components. Also 2D meshing was to be performed on a component given in the question.…

Objective: The aim of the challenge is to use different material laws available in Hyperworks and to see how they affect the results of the simulation. Case setup & execution: The challenge was executed in 7 different cases, each correspomding to different material law. The complete model for the analyses was given…

Objective: The objective of this challenge is to compare the effect of different element properties on the results of the simulation. In the process, one is expected to learn about the different element properties. The aim is also to learn how to run a simulation in Hyperworks using the Radioss solver and how to view the…

Objective: The objective of this challenge is to learn to calculate the speed of shock wave through a part and thereby the size of the timestep. The aim was also to learn to edit the Engine input file to input the termination time and time-range at which animation file is to be written. Also the 3D meshing exercise was…

Objective: The objective of the challenge is to get the understanding of the 2d meshing practices in Hypermesh, including the geometry cleanup of the CAD model, the cleanup of midsurface geometry and ensuring the prescribed criteria for the element size. The challenge required working on 3 geometries provided in the question.…

Aim: The aim of this project is to simulate the situation in which a bird strikes in the turbine blades of an aeroplane. The project aims to test one's complete understanding of the LS-Dyna software. The aim is to create the model file, which references to all the input files to match the working standards in a professional…

Aim: The aim of the challenge is to lear how to create and model joints in LS_Dyna. The challenge involved creating 4 types of joints between 2 bodies: spherical, revolute, cylindrical and translational joints. Further, each joint had 2 cases: first, between rigid bodies and second, between deformable bodies.  Explanation:…

Aim:  The aim of the challenge is to use the given material data and to determine whether the Mooney-Rivlin strain energy function or the Ogden strain energy function is an accurate fit for the given data. Also the aim was to find out the constants in the two functions using LS-Dyna. Explanation: For the purpose of…

Aim:   The aim of this challenge is to learn the material modeling procedure in any FEA software by carrying out the validation of the material data input against the data obtained from FEA simulation. Here the input material data is given in the form of an image of the stress-strain curve, from which the data needs…

Aim: The aime of this challenge is to understand the effect of mass scaling on the simulation run time as well as the difference between the explicit and implicit analyses in terms of run time. For checking mass scaling effect, the parameters dt2ms and tssfac in the *CONTROL_TIMESTEP card have been modified. Explanation:…

Aim: The aim of the challenge is to perform the simulation of the head impact of a pedestrian hit by a vehicle and calculate the Head Injury Criterion (HIC). Also the aim was to learn the use of the keywords like *INCLUDE, *INCLUDE_TRANSFORM and *DEFINE_TRANSFORMATION. The challenge involved 3 cases with progressively…

Aim: The aim of the challenge is to perform a tensile test on a cube of hyperelastic material and to compare the plots obtained after the simulation with the actual graph to validate the results. Explanation: For the analysis, a cube of dimensions 10mm*10mm* 10mm was created and meshed in LS PrePost using "Shape mesher"…

Aim: The aim of the challenge is to model a series of spotwelds using 2 different element types: in case 1 beam element is used and in case 2 solid element is used to model the spotweld. Explanation: The simulation was run in both cases using following setup: The unit system used is gm-mm-ms. The sheet metal parts were…

Aim:The aim of the challenge is to  perform the simulation of the crash of a crash box in a rigid wall. The desired outputs include the binary d3 plot, section force, accelearion of a node, directional stress and strain and energy plots. Explanation: The meshed file for the crash box was given. The rigid wall was…

Aim: The aim of the challenge is to run a rop test simulation for a phone hitting a rigid floor. The meshed parts were given and the aim was to apply all the necessary boundary conditions, loading and control conditions to finally run the simulation. Explanation: The conditions of the setup for the simulation are as below:…

Aim: The aim of this report is explain, in detail, the difference between the explicit and implicit methods of the finite element analysis (FEA). The report contains calculations and corresponding graphs to compare the two methods. Explanation: 1. Explicit method: This method uses the values obtained in the previous iteration…

Calculations for conversion from SI unit to gm-mm-ms system: 1. Mass:   1kg = 1000 gm 2. Length   1m = 1000 mm 3. Time    1 s = 1000 ms 4. Force  1 N = 1 kg*m/s2 = 1000 gm * 1000 mm/10^6 ms2 = 1 gm*mm/ms2  conversion factor=1 5. Stress 1 N/m2 = 1 kg/m*s2 = 1000gm/1000mm*10^6 ms2…