Week - 9 - Reflecting the geometry

AIM:  To Generate the report for hypermesh file using TCL/TK commands. OBJECTIVE:  To create a macro that generates a report that contains the following information about the  model: User name, date, time Profile/deck; count of component, prop, material, elements Count of empty comp/prop/mats Elements…

Objective: The ideas is to leave the students with a consolidated utility for all the macros developed during the course of this lecture. Build a master tcl/tk macro It should contain buttons that will call all utilities created as assignments during this course Segregate the buttons as per their utility. Color code the…

AIM: To create the locator, writing and reading the node data using Tcl/Tk commands OBJECTIVE: Connector : Create a macro that builds a GUI containing 4 buttons.  Component creator, weld, xloc, yloc, zloc. Upon pressing the buttons corresponding 1D element must be created and moved to the desired collector. Reading…

OBJECTIVE Create element quality check macro for 2D and 3D elements Create a button for each criterion On pressing the button the elements should be highlighted using temp nodes Entry boxes next to the buttons will accept the quality criteria value CODE PROCEDURE: To check elements quality criteria hypermesh provides various…

Objective: Part A: Create a macro to calculate the midline of a given tubular component Select one end of the lines using line by path Similarly, select the other ends using line by path option Now calculate midline for each pair Combine all these midlines to create a single midline. Part B: Create a macro to create spot…

AIM: To create a macro for Reflecting the geometry. PROCEDURE: CODE: proc optistruct {c t} {set opti [hm_getsolver]if {$opti == "optistruct"} {set n $cset m $t*createmark comps 1 $nif {[hm_entityinfo exist comps $n] !=0} {puts [tk_messageBox -message "The Component already exists" -icon warning -type ok -title Message]}…

AIM:      To Create the component and property using TCL/TK commands. OBJECTIVE: Ask the user to enter name of a component and its thickness. Write a code 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…

AIM:        To check and correcting the edges. OBJECTIVE: Create a code that displayed free and T edges for 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”…

 OBJECTIVE Create a tk GUI for all the final checks/operations: These include Create buttons to delete displayed geometric entities  Create buttons to delete empty entities Create button to re-order and re-number entities by name Create a master button in red that will execute all the above scripts in the proper…

AIM: Write a code to display normal as explained in Lecture 5 Create a widget containing two buttons for “reverse normals” and “normal off” Also assign these procedures to keyboard buttons of your choice. check the null case also OBJECTIVE: To write a code to display normals of the elements and…

OBJECTIVE : To perform the simulation of bird strikes in an aero engine model using LS DYNA. This is a classic nonlinear transient dynamics problem similar to a car crash and mobile drop. While accurate modeling of the problem requires advanced techniques such as SPH, this problem can be solved using a generic explicit…

JOINT CREATION AND DEMONSTRATION IN LS-DYNA AIM :To demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. THEORY :A distinguishing feature of multibody systems is the presence of joints that impose constraints on the relative motion of thevarious bodies…

OBJECTIVE: The aim of the project is to calculate the Mooney Rivlin and Ogden Material constants and compare the both using stress-strain data from a dogbone specimen tensile test with 100 percent strain. Hyperelastic Material: It is a highly elastic material, in the sense that all deformations can be recovered. Some adhesives…

OBJECTIVE Use graph digitizer to extract data point of True Stress vs True Strain of anyone graph given below. Use these data points and Create a MAT24_PIECEWISE_LINEAR_PLASTICITY material card for an elastic-plastic material Verify the material card by performing a uniform tensile test on a dogbone specimen   THEORY…

PEDESTRIAN HEAD IMPACT SIMULATION USING LS-DYNA AIM: To perform the Head Impact Simulation and calculate the Head Impact Criterion (HIC) value for the following cases. Simple head model impacting against a rigid wall Child head form dummy model impacting against a rigid wall Child head form dummy model impacting…

Introduction The Ogden material model is a hyperelastic material model used to describe the non-linear stress-strain behavior of complex materials such as rubbers, polymers, and biological tissue. The model was developed by Raymond Ogden in 1972. The Ogden model, like other hyperelastic material models, assumes that the…

Aim: To perform the simulation by reducing and stabilizing the runtime with the help of a mass-scale factor Objective: To understand the motive of a computing time with and without a mass-scale factor  By ensuring the stability of mass scaling at 8%  Comparing implicit vs explicit runtime Mass scaling In an explicit method,…

OBJECTIVE: The objective of this project is to model spot welds to join two sheet metal components using beam elements in the first case and solid elements in the second and compare the axial and shear force experienced by the spot welds in both cases. LS-DYNA SETUP : CASE-1: BEAM SPOTWELD SPOTWELD ELEMENT GENERATION:…

CRASH BOX SIMULATIONAIM: To create a complete simulation file for-crash analysis of a crash box having twodifferent thickness of 1.2 mm and 1.5 mm from the given FE model of the crash box andproduce the following deliverables. Input. k file and output files (D3PLOT, GLSTAT, SLEOUT, RCFORC) Animation of the final simulationThe…

The Simulation is done in a live zoom session. AIM: To create a complete simulation file to perform a drop test from a given basic .k file consisting of only nodes and elements. Essential keywords should be added to create a basic solver deck to simulate a drop test.PROCEDURE:Open the LS-PrePost and open the given keyword…

 F(u) = u3+9u2+4u  EXPLICIT ANALYSIS:  In explicit mostly dynamic analysis, nodal accelerations are solved directly (not iteratively) as the inverse of the diagonal massmatrix times the net nodal force vector where net nodal force includes contributions from exterior sources (body forces, appliedpressure,…

Aim: Convert given measurements into different units and find their corresponding conversion factors.   Value of the following measurements are given as follows: MASS 1kgLENGTH 1mTIME 1sFORCE 1NSTRESS 1PaENERGY 1NmDENSITY 1Kg/m3YOUNG'S Modulus  210GPaVelocity 56.33KMPHGRAVITY 9.8m/s2 System Of Units : Kg…

 OBJECTIVE:- To Clean the geometry. Extract mid surface. Clean mid surface geometry. Ignore holes less than dia 5mm.Create a 2D mesh with target length 5mm, min 3.5mm max 7mm. And assign proper thickness, by creating a genericproperty for given parts by using Hyper works 2021. Carry out geometry cleanup operation…

  Question: Frontal crash-BIW Check unit system and either follow[Mg mm s] or [Kg mm ms]. Create appropriate interface ,friction 0.2 and recommended parameters. Make sure of no penetrations and intersection. Correct rigid bodies if any issues. Create rigid wall with friction 0.1. Compare the model weight with the full…

Neon side crash -BIW Check unit system and either follow [Mg mm s] or [Kg mm ms]. Create appropriate interface ,friction 0.2 and recommended parameters. Make sure of no penetration and intersections. Create rigid wall with friction 0.1 as per referance model. Compare the model weight with the referance model and use added…

Aim :- To Create the mesh for bumper assembly, mesh size should be 6mm and simulate the given model with all the  different cases given in raddios as per problem statement and compare it using various plots.   Questions: Create the mesh for bumper assembly,mesh size should be 6mm.  Run the crash tube model…

1. Total number of cycles, Energy error, mass error and simulation time.2. Notice the animation of all 5 and describe the animations in brief on thebasis of whether the elements are being deleted or cracked.3. Plot energies and notice any difference.4. Based on all the results, which case would represent the on-fieldscenario.5.…

    Aim :-  To simulate Comparison of results of base simulation and improved shell element properties of crash beam with plots of forces and various energies   Questions: Comparison of results with base simulation and improved shell element properties 1.Using the crash beam file from the previous…

  Aim :- To edit the Engine file and 3d meshing the given components. Procedure:- Check the material properties of the rail component and calculate the speed of sound in steel rail =          From the "FIRST_RUN_0000" we can get the values of steel material is , Young's modulus…