week-11 Joint creation and Demonstration

AIM: Spot welding is a type of resistance welding used to join sheet metals. The main objective of this problem is to model spot welds in a given assembly using beam elements and solid elements separately. GIVEN DATA:  (i)*MAT_SPOTWELD material card should be used for both beam and solid elements. (ii)The properties…

AIM OF THE PROJECT To perform a bird strike simulation when the bird tries to hit the gas turbine blade in LS-Dyna with kg/mm/ms as unit system.   BIRD STRIKE IMPACT Bird strike is common and it can be a significant threat to aircraft industry. It is a collision between a bird and an aircraft. Old aircrafts and new…

AIM OF THE PROJECT To demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. THEORY OF JOINTS1) Spherical Joint: It is the type of joint which is used for allowing free rotation in two planes at the same time preventing in any direction,…

AIM OF THE PROJECT To calculate Mooney Rivlin and Ogden material constants and compare the both using stress-strain data from a Dogbone specimen tensile test with 100% strain  The comparison should be shown from the d3hsp file and using simulation IMPORTANT POINTS TO BE CONSIDERED The given data is the engineering…

AIM OF THE PROJECT To create a material model using the data extracted from the given true stress-true strain curve of graphite iron casting. Use a data digitizer to create the data points from the given curve Validate the material model by performing a tensile test on a dog bone specimen GIVEN DATA Young's Modulus of…

AIM OF THE PROJECT Reduce the runtime required to run the analysis of a given problem by mass scaling and ensure the stability of mass scaling. Optimization of  DT and TSSFAC parameters. The hard limit on mass scaling is 8% Plot a Histogram for comparing runtime with mass scaling results. Run the given model using implicit…

INTRODUCTION Pedestrian safety simulation is a part of vehicle safety engineering from crash perspective. This study focuses on car and pedestrian interaction. In pedestrian protection, 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.…

AIM: To create complete simulation for the given meshed file containing rigid floor and cellphone and perform a drop test. NOTE: Height of the drop test is assumed to be 1800mm and unit system used is kg, mm, ms PROCEDURE: Step 1: Open the given keyword file in LS Prepost. It should be opened using File > open >…

AIM OF THE PROBLEM Create a block of 10mmx10mmx10mm dimension with 10 elements for each direction. To use appropriate boundary conditions to simulate uniaxial tensile behaviour of a material.  Compare the results for the simulation using ELFORM = 1, 2, -1, -2  by plotting Engineering stress versus Stretch…

AIM: To simulate the crash box provided with the mesh. Given:Material : Mild SteelUnits : gm/mm/msInitial velocity: 50 kmph = 13.88 mm/msThickness: (i) 1.2mm for case 1 (ii) 1.5mm for case 2 Procedure: Step 1: Importing the keyword file to LS-Dyna. The keyword file of Crash box is as shown below. Step 2: Defining Material…

EXPLICIT AND IMPLICIT METHODS Aim:  To solve the equation F(u) = u3 + 9u2 + 4u using both explicit analysis and implicit analysis methods. Here incremental load control scheme is used DETAILED EXPLANATION ABOUT EXPLICIT AND IMPLICIT METHODS Implicit and explicit methods are two types of approaches that can be used…

Aim: Objective of the challenge is to show the detailed conversion factor for gm/mm/ms from the value of measurements(SI Units) as given in the question.Also to find the conversion factors for all the mentioned unit systems Before moving on to conversion factors, lets have a look at the types of physical quantitites1)Fundamental…