clc close all clear all % x = linspace(0,.6,150); y = linspace(0,.6,150); n_cases = 50 [xx yy] = meshgrid(x,y); %% generate stalagmite function values for i=1:length(xx); for j=1:length(yy); input_vector(1) = xx(i,j); input_vector(2) = yy(i,j); f(i,j) = stalagmite(input_vector); end end %% STUDY1 tic for i = 1:n_cases…

CODE DESCRIPTION: In first step NASA THERMO FILE is open usin fopen and letter r is to read that file. using fgetl we can access each line from data so in code three fgetl line are used to skip few unwanted lines. temperature ranges are found next cp. H ,S found next using if else loop using given formulas. plots are formed…

Aim : To extract the mid surface and generate the mesh for the Hood. Procedure: STEPS: 1. First step is to import the geometry, geometry should be in the suitable format which is accepted by ANSA(eg:step,IGES). 2. After importing geometry cleanup is done where any triple coons , unchecked faces, needle faces are removed.…

Aim: To extract the mid surface and mesh for the Bottle Cap. Procedure: 1. First step is to import the geometry, orientation is checked. 2.  Now geometry cleanup is done where all the needle and unchecked faces are removed. 3. Resolution is improved to get the actual representation of geometry and all the extra…

time taken for switch = 6 hrs time taken for component = 3.5 hrs

Aim: To do solid or Tetra or unstructured meshing of REAR VIEW MIRROR maintaining the quality criteria. Given Quality Criteria: Procedure:  First Geometry is imported.To stitch all surfaces  TOPO command is used  .All the geometrical errors are removed. Before doing meshing, meshing parameters are set. In…

tet collapse removed for solid mesh and min and maximun length error removed for surface mesh.

Aim : To perform connections for the car Rear door.   Procedure 1.After importing the model, first pid's are assigned to each respective part of car door, so that connections can be easily defined between the pid's.              2. Now Bolt connections are represented. …

Aim: Understanding the Basics of MORPHING in ANSA and its industrial applications. Introduction: Mesh morphing consists of the adaption of a computational grid adopted for computer aided engineering (CAE). For instance, the solid or shell mesh of a structural part ready to be processed by an FEA solver, or the volume…

Aim: 2D meshing of Instrumental Panel Theory: A dashboard (also called dash, instrument panel (IP), or fascia) is a control panel set within the central console of a vehicle or small aircraft. Usually located directly ahead of the driver (or pilot), it displays instrumentation and controls for the vehicle's operation.…

                                Aim: Meshing of Suspension Assembly Quality Parameters: 1. Component Mesh Type Quality Criterias Tyre and rim Tetra Mesh  Target Length = 6.5   [5   Skewness = 45.   Non-Uniform Thickness (Tria                       Mesh)                 Uniform Thickness (Mixed mesh) Target Length = 4 Target…

Aim: To determine the conversion factor for different unit systems. Theory: Different industries use different system of units as per their convenience. The units for the basic measurement quantities, mass distance and time - dictate how the other derived quantities will be expressed. For example, automotive industries…

Aim: To solve this equation, F(u) = u3+9u2+4u using both Explicit and Implicit Methods ( have a tolerence of 0.001). F = Force ; u = displacement Overview : The problem is solved by both an explicit and implicit analysis. In both cases an incremental load control scheme is used. Ways to solve FE problem--…

Aim: To see the impact of phone hitting the floor (Drop Test).  Unit system used: g mm ms Floor Material: Rigid  Phone Material: Piecewise Linear Plasticity  Given: .k file was given, which include phone and floor. Phone has a solid elements and floor has shell elements.   Procedure: 1. First .k file…

                                           CRASH BOX SIMULATION USING LS-DYNA A crash box is a highly energy absorbing structure that crashes on application of loads and reduces impact on other components nearby. …

AIM : Modelling of spotweld using beam and solid element and analyzing their behaviour under uniaxial load Different spotweld techniques are: Using Beam element and tied edge to surface contact Using constraint spotweld Using constraint generalized  Using Solid element and contact spotweld Procedure for Spot weld…

AIM: Calculate the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model Objective : To check effect of different ELFORM on results. Select appropriate solver based on problem. Procedure: 1. A 10×10×10 mm meshed box is created with 10 elements in each row and column. 2. Material card…

AIM: To perform Head Impact simulation using LS-DYNA on child pedestrain head and calculate the Head Impact Coefficient (HIC). Unit System: Kg mm ms CASES : Impact of Simple head on rigidwall. Impact of Pedestrain headform on rigidwall. Impact of Pedestrain headform on hood. Procedure: CASE 1: Impact of Simple…

MASS SCALING IN LS-DYNA AIM: To check the Effect of mass scaling on RUNTIME. Effect of dt2ms on % mass increase. Effect of tssfac on % mass increase and runtime. Procedure: 1. First model is imported. 2. Now we have iterate the different values of tssfac and dt2ms in TIMESTEP card, to check their effects on runtime. These…

Aim: To calculate the Mooney Rivlin and ogden material constants. Given:  1. Engineering stress-strain data . 2. Dogbone specimen Unit system used: g-mm-ms Theory: A hyperelastic or Green elastic material is a type of constitutive model for ideally elastic material for which the stress–strain…

Aim:  Use the diagram of the true stress-strain curve of graphite iron casting and validate it using dogbone specimen. Given Curves: Curve 2 is used for material modeling. Material Modeling steps: 1. First raw data points are extrated from the curve using data digitiser. Anything between 100 to 200 points are…

Aim: To demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. Different Type of joints are: 1. Revolute Joint b/w two rigid bodies: 1. First two cubes or geometries are created using shell elements (Element & Mesh -> 4N Shell -> Give Dimensions).…

 Objectives: 1. Proper simulation of bird striking the blades and blade failure can be seen within a short span of time. 2. All the files should be seperately included in MAIN file. 3. Consistent numbering approach 100000+ for nodes, 500000+ for elements, and 1000+ for the parts should be followed. 4. Mass scaling…

Objective : Mesh the given component and add 1-D rod, beam, bar, spring element at given positions Given:  1.Mesh size = 5 2. 3. Bracket Procedure: Mid surface is generated using skin offset as it was given better results while meshing. Second Mid-surface is assigned to bracket two using tool → Organize. Now material and…