Week - 5 - Modelling Spotwelds

AIM : To model spotwelds for the given assembly of parts and run a crash test in LS-DYNA. OBJECTIVES: To create a rigidwall in LS-Dyna on which the spotweld model can impact. To apply initial velocity of 50 kmph to the model. To run the simulation of model using two different types of spotweld i.e. beam spotweld and solid…

AIM : To mesh the plastic component of a passenger vehicle side door as shown below with the given quality criteria.   Quality Criteria – Target Element Length = 4 mm PROCEDURE : At first we will open Hypermesh and choose our User Profile as RADIOSS. Then we will import the model using Import Tab. After importing…

AIM : To mesh the plastic component of the vehicle Floor panel model as shown below with the given quality criteria.   Quality Criteria – Target Element Length = 5 mm PROCEDURE : At first we will open Hypermesh and choose our User Profile as RADIOSS. Then we will import the model using Import Tab. After importing…

OBJECTIVE : To perform side crash analysis of a vehicle against a rigid cylindrical wall or a Pole in Hypermesh. To simulate the crash behavior of the vehicle in HyperView and discuss the results. To plot the sectional forces at cross members and discuss the results. To obtain intrusion results at B-pillar, hinge pillar…

OBJECTIVE : To import the Car and the Roof impactor in Hypermesh to perform Roof Crash Simulation of the Car. To transform the Impactor over the roof of the car to obtain a proper location for roof crash simulation. To create all the necessary contact interfaces for the simulation. To apply the necessary boundary conditions…

OBJECTIVE : To perform frontal crash analysis of a vehicle against a rigid wall in Hypermesh. To simulate the crash behavior of the vehicle in HyperView and discuss the results. To plot the sectional and axial forces at different locations and discuss the results. To obtain intrusion results at dash wall and plot them…

AIM : To mesh the given model using 3D Tetramesh and given criterias. CHALLENGE : Model 1 – Housing Model Criteria :– Target Element =  5mm, Minimum Element = 2mm, Maximum Element = 7mm, Tet Collapse = 0.15. At first, we will import the model in Hypermesh using import command. There are different ways…

AIM : To design an electric powertrain for aircraft in runways and list out the theoretical information about aircrafts.  OBJECTIVES : To list out the total weight of various types of aircrafts.  To find difference between ground speed and air speed of an aircraft. To find out why it is not recommended to use…

OBJECTIVE : To work on material card in Radioss and implement the different Material laws on the given component. To apply the seven different cases and compare them in a tabulated format. To compare total number of cycles, energy error, mass error and simulation time of all the cases. To notice the analysis animations…

OBJECTIVE : To create the mesh for bumper assembly given below with target element size as 6mm.           To apply the six different cases to the Crash Tube model given below.           To plot the Rwall forces, contact forces and internal energies and comment on the resulting…

AIM: To simulate a crash test for a crash box impacting on a rigidwall in LS-Dyna. OBJECTIVES: To create a rigidwall in LS-Dyna on which the crash box can impact. To apply initial velocity of 50 kmph to the crash box. To run the simulation of crash box using two different thickness 1.2 mm and 1.5 mm respectively. To plot…

AIM: To perform a simple cellphone drop test in LS-Dyna by creating a complete simulation file of the model given below.    MODEL SETUP: In LS-Dyna, we will first open the keyword file of the model which is named as Drop_Test_onlymesh. After importing the keyword file, we will see the model as shown above. The…

OBJECTIVE : To convert the given measurements in the different system of units mentioned below along with the conversion factors. Values of the following measurements are given as follows: MASS 1kg LENGTH 1m TIME 1s FORCE 1N STRESS 1Pa ENERGY 1Nm DENSITY 1Kg/m3 YOUNG'S Modulus 210GPa Velocity 56.33KMPH GRAVITY 9.8m/s2…

https://skill-lync.com/projects/frontal-crash-simulation-challenge

AIM : To study about brakes and breaking energy using MATLAB. OBJECTIVES : For a defined driving cycle, calculate the energy required for braking. Why electric motor can’t develop braking torque at high speed similar to starting? How electric and mechanical brakes are coordinated?  Make a MATLAB program which…

OBJECTIVES : To study about the efficiency and losses that occurs in power electronic circuits. To show how duty cycle control signal can be generated for a simple power converter circuit in MATLAB. To compare square wave inverter output voltage with sine modulated one. To explain the difference between VFD and Vector…

AIM : To study about the characteristics of Induction Motor and compare induction motor to a mechanical clutch. CHALLENGES : 1. How induction motor operation is similar to the clutch? First we will see the working of clutch and induction motor separately. Mechanical Clutch – Clutch works on the principle of…

1. What do you understand by FEA? Finite element analysis is defined as a numerical analysis method which provides solutions to problems that would otherwise be difficult to obtain. In simple terms, FEA is a faster way to get results to problems that are hard to solve. FEA uses software based numerical methods…

AIM : To study about the control of DC motor using the power converter circuits in Simulink. OBJECTIVES : To run the MATLAB demo ‘Speed control of a DC motor using BJT H-bridge’ and to modify the model such that armature current doesn’t shoot up when motor changes direction from forward to reverse. To…

AIM : To study and explore about theory behind Electric Vehicle Drivetrain. OBJECTIVES : To study about types of power converter circuits which are employed in electric and hybrid electric vehicle. To calculate the EV steady state speed based on motor and controller parameters. To refer the blog on Induction Versus DC…

AIM : To calculate Wide Open Throttle (WOT) Condition. OBJECTIVES : To find the ratio of hill-climbing power required by fully loaded Tata Ultra truck to the half-loaded one. To calculate the minimum length of the flyover considering the minimum height at the summit should be 5.5 meters. To prepare a new drive cycle excel…

AIM : To calculate the forces acting on a vehicle based on following questions. What should be the maximum speed of the motor used in an electric scooter capable to run at 90 kmph, if the fixed gear ratio is 7 and tire size is 90/100 R10 53J? Solution – Here, the tire size is given as 90/100 R10 53J, To proceed…

AIM : To parse NASA’s Thermodynamic data file to calculate Enthalpy, Entropy, Specific heat and Molecular weight of each species using MATLAB. OBJECTIVES : To write a function to read the data given in the file and extract the coefficients for each species to calculate enthalpy, entropy and specific heats for all…

AIM : To study about Genetic Algorithm and to calculate the global maxima of stalagmite function using Genetic Algorithm in MATLAB. OBJECTIVE : To study about Genetic Algorithm and Stalagmite function. To write a code in Matlab to optimise the stalagmite function and find the global maxima of the function. To…

AIM : To visualize P-V Diagram of Otto Cycle and to calculate thermal efficiency using Matlab. OBJECTIVE : To study the Otto Cycle and write a program to calculate the state variables of Otto Cycle. To write a program to plot a P-V diagram of the Otto Cycle. To calculate Thermal Efficiency of Otto Cycle using Matlab. THEORY…

AIM : To perform a curve fitting for the given dataset and to find the best fit and perfect fit for that particular dataset using Matlab. OBJECTIVE : To write code to fit a linear and cubic polynomial for the Specific Heat (Cp) data. To plot the linear and cubic fit curves along with the raw data points. To study about…

AIM : To create a program in Matlab to solve the second order ODE of motion of a simple pendulum with damping. OBJECTIVE : To write a program to simulate the transient behaviour of a simple pendulum To create an animation of the motion of simple pendulum using MATLAB. THEORY : Ordinary Differential Equation (ODE) –…

Simulate the Workspace of a 2R Robotic Arm using Matlab. AIM : To write a program in Matlab to simulate the forward kinematics of a 2R Robotic Arm. INTRODUCTION : The Robotic Arm is a type of Mechanical Arm which is programmable to perform different tasks. It is composed of a set of joints separated in space by the arm…

A program to calculate Aerodynamic Drag Force for Study of Flow over Bicycle using Matlab. Aim : To write a Matlab program to calculate Aerodynamic Drag Force against a bicycle and study the relation between – Velocity and Drag Force Drag Co-efficient and Drag Force Objective :  To calculate the drag force on…