Modelling Spotwelds

Spot weld simulation using LS DYNA Aim: To compare spot welds in the form of beam elements and solid elements. Objective:  To create a spot weld connection between two plates in the form of beam elements. To create a spot weld connection between two plates in the form of solid elements. Comparing axial and shear…

Aim: Roof Crash analysis of Dodge Neon car with an impactor using RADIOSS solver. Objective:  To place the impactor at global coordinate ( -3500.00, 584.822, 1343.06). To create a TPYE7 contact interface between impactor and vehicle coefficient of friction to 0.2. To create appropriate rigid bodies…

Aim: To analyze the side impact on the vehicle using HyperCrash and RADIOSS. Objective:  To set up the pre-processed FEA model in HyperCrash to recommended parameters in property cards and engine files To analyze how the deformation takes place when the vehicle experience a side crash. To compare the Sectional…

Aim: To analyze the front impact on the vehicle using HyperCrash and RADIOSS. Objective:  To set up the pre-processed FEA model in HyperCrash to recommended parameters in property cards and engine files To analyze how the deformation takes place when the vehicle experience a frontal crash. To compare the forces…

Aim: To implement connections on the given model (rear door) using the NASTRAN deck on ANSA software. Theory: Connections are required for a given model to have better results while performing NVH simulation. The door has many parts connected with each other in the form of welding, adhesive, bolting, and snap fittings…

When the given model was viewed in ANSA software following points were observed: The model was imported and geometry consists of a number of errors. Hard to visually find the numbers of part present in the model itself. Hard to understand the actual shape of some features as it was imported from another workbench (software).…

Aim:- To check for the geometrical errors and mesh the component using tetra elements under volume mesh followed by the given element Quality criteria.  Basic Steps 1) Import component and Go for Length option from the mesh module to find out the actual geometry of a model 2)Perform topo on it, as the model is too…

Aim:- To check for the geometrical errors and mesh plastic components using 2D mesh followed by the given element Quality criteria. After meshing assigned thickness to the respective component. Basic Steps 1) Import component and Go for Length option from the mesh module to find out the actual geometry of a model 2)Perform…

1D Connection using HyperMesh Given model was loaded in HyperMesh and the model looks as follows:   The model does not have any geometrical errors and good to go for mid-surface. Using the auto midsurface option the mid surface was extracted. and the mid surface looks as follows: It's seen that the auto mid surface…

2D Meshing of Hood Model The given model was loaded in HyperMesh and the model looks as follows: The given geometry has solid parts in it. (the image shows the thicker lines representing the solid parts in the geometry) For 2D meshing solids are not required, therefore solids are deleted and the image below shows the thinner…

Tetra Meshing the given component using 2D tria mesh First, the given component housing was checked for geometry cleanup. The given model did not require any geometry cleanup. The entire geometry was meshed using 2D shell mesh with only tria elements and the target length is 5mm. Converting the 2D mesh into tetra…

Creation of different types of 1D connectors on a truss model using Hypermesh The given model was opened in Hypermesh and the model is as follows: The model mesh using the 2D mesh auto mesh tool with the element target length of 5mm. The meshed model looks as follows: The rails and trusses have no connection between them,…

Plastic Component 2D Meshing (Side Door Trim) using HyperMesh The given component was loaded in HyperMesh and the model looks as follows: The given model has many geometrical errors like missing faces, free edges. The geometry was cleared before extracting mid-surface. Using Geom tools like quick edit, surface…

Floor Panel 2D Meshing using HyperMesh The given component was loaded in HyperMesh and the model looks as follows: The given model has many geometrical errors like missing faces, free edges. The geometry was cleared before extracting mid-surface. Using Geom tools like quick edit, surface edit the geometrical…

Aim: To perform a simple drop test of mobile using the given FE model using LS-Dyna solver. Objective: To set up the material card, initial velocity to the mobile, and run the simulation to perform a simple drop test using LS-Dyna solver.   Procedure: The given FE model is loaded in LS-PrePost software…

  AIM: To simulate a crash test for a crash box using LS Dyna. OBJECTIVE: Apply boundary condition to crash tube Create simulation for the crash tube of 1.2mm & 1.5 mm thickness and compare results PROCEDURE: Here are the different assumptions and information required: The crash box should crash into a rigid…

Aim: To carry out geometry cleanup of the models and 2D meshing by extraction of the mid surface. Objective: Cleaning up the geometry and extracting mid surface. Meshing is done with a target length of 5mm with Quality criteria (min 3.5mm and max 7mm).  Procedure: Given three models are loaded on HyperMesh software…

Flow Over Bicycle Aim: To write a Matlab program to calculate drag force against a cyclist at varying speed and varying drag co-efficient. Objective: 1) To calculate drag force against a cyclist at varying speed and drag co-efficient. 2) To plot a graph of velocity vs drag force with varying velocity. 3)To plot a graph…

Aim:- To write a code to parse the NASA thermodynamic data file and then calculate the thermodynamic properties of various gas species. Objectives: Read the data inside the Nasa File. Write the code to plot the Thermodynamics characteristics of each species. Calculate the Molecular weight of each species. Theory:…

Aim: To write a code to calculate the global maxima of a stalagmite function. Objective: To optimize the stalagmite function and find the global maxima of the function. Theory: Global Optimisation: Global optimization is the task of finding the absolutely best set of admissible conditions…

Curve Fitting of Cp Aim: To code a program to perform curve fitting of Cp data. Objective: To best fit a curve to Cp data provided using linear, quadratic & cubic polynomial and stepwise fitting using Matlab. Theory: Curve fitting is the process of constructing a curve, or mathemathical function,…

Simulation Of Simple Pendulum Aim: To write a program to simulate the transient behaviour of a simple pendulum and to create an animation of it's motion. Theory:  A simple pendulum consists of body of mass 'm' hanging to a string of length 'L'. The other end of the string is povited to the piont P, where P is…

                                                                   OTTO CYCLE   Aim: To code a program to create a PV diagram of Otto cycle…

Forward Kinematics of 2R Arm Robot   Aim: To write a program in Matlab to simulate the forward kinematics of a 2R Robotic Arm and determine its workspace. Theory: A robotic arm consists of links and joints forming a kinematic chain, where motions are controlled using a controller.  The 2R robotic arm has…