Modelling Spotweld using Beam and Solid elements in LS-DYNA PrePost.

AIM:      To simulate a non-linear transient dynamic problem of a Bird Strike with a Jet Engine Blade and evaluate the results. GAS TURBINE ENGINE:     Both Piston (reciprocating) engines and Gas turbine engines are Internal Combustion engines. They have a similar cycle of operation…

OBJECTIVE To create a macro  that will automatically create components and assign thickness to it The code should decide on its own what type of collector should be created depending on the user profile/deck. According to the deck, the code should decide, whether a property needs to be created or not.  CODE Here…

OBJECTIVE:     By using the (*CONSTRAINED_JOINT keyword) demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. To demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. …

Objective:           To perform the material modeling from the data given and calculate the Mooney Rivlin and Ogden material constants and compare the both using stress-strain data from a Dogbone specimen tensile test with 100% strain.  Hyper-elastic Material:      …

Objective:          By Using the diagram of the true stress-strain curve given for graphite iron casting, create a material model for the Dogbone specimen. Validate the created material model card by performing a tensile test on a Dogbone specimen. Finally, the results are compared. Procedure for…

Objective:        To introduce mass scaling Technique to reduce the run time for the analysis and the limit for the mass scaling is restricted to 8% and simulation as to be completely stable. By optimizing the TSSFC and DT2MS parameters the simulation is analyzed for three different cases.    …

OBJECTIVE:        In this challenge, a children's head foam model is provided and supposed to replicate a scenario where this head foam will impact a car bonnet. The hood model is an elasto-plastic material card that has to be used. From the simulation, the head impact coefficient must be…

AIM :       To Check for the geometrical errors, take mid-surface and mesh with the given element Quality Criteria for the given Component and perform suitable connections. OBJECTIVE :        For the given CCB CAD model, Check for the Geometry cleanup (if required), Take the…

OBJECTIVES:                 The main objective of this assignment is to see the results of the side pole crash test. For that the input crash parametres are inputted according to the Federal Motor Vehicle Safety Standards(FMVSS) rule number214.          …

OBJECTIVE:           Create a block of 10mmx10mmx10mm dimension with 10 elements for each direction and use the material card attached (Ogden_Material.k) that is representative of the material properties. Use appropriate boundary conditions to simulate tensile behavior for the model and finally…

OBJECTIVE:        The objective of this simulation test is to compare the two weld methods Spotweld, Solid weld using the HEXA element in the provided model. The model is inputted with the LS-DYNA keywords. After checking the model, it is simulated and the results are analyzed. PROCEDURE:…

OBJECTIVE:       To create simulation results for a crash box under load and compare the plots for the obtained simulation results. The keywords are loaded to the model and saved in a new directory. The thickness of the box is changed and compared the results with the old thickness. Then the energy…

OBJECTIVE:          The aim of this challenge is to simulate the drop test of the cell phone falling in the rigid plate using the LS-DYNA. The model is set with suitable input parameters. After running the model, the plots are reviewed. PROCEDURE:          There are three…

ABSTRACT:            The objective of this challenge is to create a consisten system of units for the given input. LS-DYNA doesn't have a default system of units. User needs to input material properties and physical dimensions according to a consistent system of units as per their choice.…

OBJECTIVE:          The main objective of this challenge is to solve the third-order polynomial equation with both the Implicit and Explicit analysis and compare it with the Exact solution. The given equation which is in tension is expressed as follows,      …

ABSTRACT:         To write a code that displays the normals for the displayed component. For that a TCL/TK code is created and executed in Hypermesh. Then by using that command normals in the component is reversed and make it off. PROCEDURE:         For this operation Notepad++ scripting…

ABSTRACT:             To create a GUI for all the final checks for the component. It contains the operations like deleting empty components, re-order, re-number. An extra button is used to perform all the operations at a same time called as master button.  PROGRAM:…

ABSTRACT:            To create a code that displays free edges and T_edges for the displayed elements. Free edge color red and T edge cyan. Except for edges, all other components must be made transparent. Also, temp nodes must be automatically created for “free nodes”…

ABSTRACT:                 The objective of this challenge is to extract a middle surface for the given component and mesh the midsurface component using the inputted quality parametres. Then the meshed component is assigned a thickness. In this challenge manual midsurfacing…

ABSTRACT:               The main objective of this challenge is, given car's hood is meshed in ANSA and checked for the quality parametres assigned to it. The geometry is captured perfectly to deliver a good mesh and that will give more accurate results during the analysis part.…

ABSTRACT:            The main objective of this challenge is to create connections for the given rear side door model and store them in a seperate PID's by using some useful tools in ANSA. PROCEDURE:            There are two steps to be followed for deploying…

ABSTRACT:            The objective of this challenge is to attempt a solid mesh on the given rear wheel suspension system and create suitable connections for the solid mesh. The CAD geometry is cleaned and meshed with the given quality criteria to achieve good mesh. SUSPENSION SYSTEM:  …

ABSTRACT:                  To create a 3D TETRA MESHING using the given quality criteria file and check for the quality at the end of the  meshing. THe 3D mesh is achieved by boing the 2D mesh first and the 3d mesh is done finally. 3D MESHING:      …

OBJECTIVE:            The main objective of this challenge is to achieve the good mesh quality for the given component. The CAD geoemtry is cleaned with the useful tools in the ANSA and the mid surface is extracted. Then the new midsurface is subjected to meshing where the component is discritesized…

OBJECTIVE:                The main objective of this model is to create a proper mesh for the given hood model. For that the model is cleaned and taken a middle surface.                The flow of the mesh is taken into concern and the quality…

OBJECTIVE:         To run the frontal crash simulation of a car model and plot the energy differences.         The forces acting on the sections in the selected parts of the model are created and plotted the energy differences.         The displacement forces…

OBJECTIVE:         To run the roof crash test simulation of a neon BIW car model and plot the energy differences.         The maximum force vs displacement peak in  curve is to plotted for the impactor.         The load path after the impact is studied.…

1)GENERAL TYPES OF AIRCRAFTS:             Commercial Aircraft,             Private Jets,             Propeller Planes. The weight of an aircraft is having two aspects,they are             Max Take-Off…

   OTTO CYCLE:                    The Otto cycle is a description of what happens to a mass of gas as it is subjected to changes of pressure, temperature, volume, addition of heat, and removal of heat. The mass of gas that is subjected to those changes is called…

BJT H-BRIDGE:                 An H-bridge is an arrangement of transistors that allows a circuit full control over a standard electric DC motor. That is, an H-bridge allows a microcontroller, logic chip, or remote control to electronically command the motor to go forward, reverse,…

POWERTRAIN IN ELECTRIC AND HYBRID ELECTRIC VEHICLES:                   An Electric Vehicle is a vehicle that uses a combination of different energy sources, Fuel Cells (FCs), Batteries and Supercapacitors (SCs) to power an electric drive system  In EV the main energy source…

ABSTRACT:                  To create a 3D TETRA MESHING using the given quality criteria file and check for the quality at the end of the  meshing. THe 3D mesh is achieved by boing the 2D mesh first and the 3d mesh is done finally. TETRA MESHING:      …

ABSTRACT:                The given side door model is taken a midurface and then the geometry of the midsurface component is cleaned for doing the mesh. Then the meshed component is checked for the quality parametres. MESHING:             The meshing…

ABSTRACT:                The given Rear wheel holder is taken a midurface and then the geometry of the midsurface component is cleaned for doing the mesh. Then the meshed component is checked for the quality parametres and assigned a thickness. MESHING:  …

ABSTRACT:                To create a connections for the various components and attach them eac other. FOr the connections the connectors like spotweld, seam, bolt connectors, rbe3 and rbe2 links are used.                   …

OBJECTIVE:                 The main objective of this study is to create a 1D elements on the given component with given cross section and Degree of Freedom(DOF).                 For that component given the…

BUMPER ASSEMBLY: CREATING A MESH FOR BUMPER ASSEMBLY:              The bumper assembly is opened into the Hyper mesh window and the geomerty cleanup is done.              Then the assembly is meshed with the mesh size of 6mm as given in…

OBJECTIVE:              The main objective of this assignment is to compare the simulation result with the default input values(/Def_Shell) and the simulation with the element properties changed.                        …

1.CALCULATING THE SPEED OF SOUND IN THE STEEL RAIL: TIME STEP(dt):                     The time step (dt) is the time required for the shockwave (speed of sound) to propagate across the smallest distance in an element.              …

CLEANING THE GEOMETRY AND CREATING A 2D MESH:                         The given three models are meshed properly by cleaning all the geometry errors.                         The following steps…

1.MAPPED AND DYNAMIC MODEL OF ENGINE ,MOTOR AND GENERATOR: mapped model:     Powertrain Blockset provides two types of combustion engine models mapped and  dynamic.    Mapped engines represent macro engine behavior as a set of lookup tables (brake torque, fuel flow, air mass flow, exhaust temperature,…

DRIVE CYCLES:               A driving cycle is a series of data points representing the speed of a vehicle versus time. Driving cycles are produced by different countries and organizations to assess the performance of vehicles in various ways, as for example fuel…

                                      PARSING NASA THERMODYNAMIC DATA                                    NASA THERMODYNAMIC DATA:…

   THE GLOBAL MAXIMA of THE STALAGMITE FUNCTION USING (GA) GENETIC ALGORITHM  INTRODUCTION:                  A genetic algorithm (GA) is a method for solving both constrained and unconstrained optimization problems based on a natural selection process…

                                            CURVE FITTING USING MATLAB INTRODUCTION TO CURVE FITTING:                         Curve fitting is…

    AIM:        SIMULATION OF TRANSIENT BEHAVIOUR OF A SIMPLE PENDULUM. OBJECTIVE:        The objective is to write a program that solves the OrdinaryDifferentialEquation. The ODE represents the equation of motion of a simple pendulum with damping. INTRODUCTION:  …

AIM:          To determine the possible movements of manipulator by changing the angle of the links.  ROBOTICS          Robotics is branch of engineering and science that includes mechanical engineering, electronic engineering, information engineering, computer science,…