Week 9 - Creating connection for Rear door

Aim: Surface wrap the three model.Procedure:1. Open the engine model in ANSA.2. Delete the unwanted surfaces outside the model and fix the single con issue.Don't fix the interior surfaces.3. Do the same with the other two model also.4. Merge all the model.5. Close the holes by creating the surface.6. Delete the unwanted…

Aim: For the given model mesh the wind tunnel.Procedure:1. Open the model in ansa.2. Do Topo and geometry cleanup.Since the model is symmetric split the model and delete half and work on it.Also Assign PID.Assume: Target length Body/Glass = 4, Min/Max length = 1 / 6Target length Tire / axle = 3 , Min/Max length…

Aim: CFD Meshing for BMW car.Procedure:1. Open the model in ANSA.2. Change the perimeter lenght to 1 mm, Orient and topo the model.3. Do the geometry cleanup.Since the model is symmetry delete the half model, do cleanup and refect it.4. Check the geometry using check manager.There should be no error other than single…

Aim: Perform Volumetric mesh for the given model.Procedure:1. Open the model in ansa.2. Check for geometry and do geometry cleanup.remaining triple con is due to geometry so it can be ignored.3. Check the property and rename it. If required move surfaces to the PID.If the geometry is not closed completely close the…

Aim: Mesh the model with 3 different mesh size.Procedure:1. Open the model in Ansa.2. Use orient to fix the geometry normals.3. Do geometry check and fix the surface by creating the surface.4. Create properth and mov the components to different pid.4. Mesh the model 1 mm mesh size.5. Save the Model and erase the mesh and…

Aim:To perform the data analysis using Python as the scripting language and to a. Plot a graph between any two quantities (like pressure vs volume, mean temperature vs crank etc)b. Calculate the area under the P-V Diagramc. Calculate the power output of an engine running at a speed of 1500 RPM.d. Calculate the specific…

Aim:To execute code to fit a linear and cubic polynomial for the Cp data using Python as the scripting language.Theory:Curve fitting is the process of building a curve, or a mathematical function, which is best suited to a series of data points, possibly constraints. By curve fitting, we can mathematically construct the…

Aim:Write a python code to simulate the transient behavior of a simple pendulum and to create an animation of its motion.Theory:In engineering, an ODE is used to describe the transient behaviour of a system. A simple example is a pendulum.Newton's second law determines the movement of a pendulum. When this law is written…

Aim: To plot a P-V diagram for the Air Standard Cycle or Otto cycle and to compute the thermal efficiency of the engine using Python.Theory:The Otto cycle consists of isentropic compression, heat addition at constant volume, isentropic expansion, and heat rejection at constant volume.It measures the thermal efficiency…

Aim:1) To extract mid-surface for the tube model and provide a connection with sharing option at the tube joint locations2) Create a model in Spaceclaim one on top of each other and create a shared topology between the top block and the bottom block. Perform a modal analysis (free-free run)Procedure:Case…

Aim: The objective of the challenge is to create spherical, revolute, translational and cylindrical types of joints between two rigid bodies and two deformable bodies in Ls-Dyna.Procedure:Rigid Revolute Joint1. Open LS Prepost and create two plates.Go to Mesh - Shape Maker -4N Shell - Give co-ordinate - Click Create.2.…

Aim: To create the simulation of bird strike on the Aero Engine from the given FE model by using Ls-dyna.Procedure:1. Open the model in LS-Prepost and Check the given Model.2. Create a section, hourglass, material card for all the model that are required as per requirement and assign them.3. Create a main Project_2.k…

Aim: To perform the material modelling from the data given and calculate the money-Rivlin and Ogden material constants and compare them both using stress-strain data from a Dog-bone specimen tensile test with 100% strain.Procedure:Mooney Rivlin Constant1. Import the .k file.2. Lock all the DOF of left side of…

Aim: By using the diagram of the true stress-strain curve given for graphite iron casting and creating a material model for the dog bone specimen by using LS-prepost and Validating the material.   Procedure: 1. The material curve image is provided in PNG format, Convert it into JPG file. Open the JPG file in GetData…

Aim: Use mass scaling to reduce the runtime of a model and ensure the stability of mass scaling. The hard limit on mass scaling is 8%   Procedure: Implicit Analysis 1. Open the .k file in LS-Dyna. 2. Check the unit sytem used. Go to Model - Keyword Manger - Control - Units. Kg - m - sec unit system is used. 3.…

Aim:  To simulate and comparison of  the pedestrian head impact with rigid wall and pedestrian head impact with hood.   Procedure: Case 1: Simple Head Impact with the Rigid Wall. 1. Open the LS-Dyna. 2. Import Simple_Head_Model. 3. Create a Material card for Head. Go to Model - Keyword Manger - MAT…

Aim:  Create a 10x10x10mm solid mesh and run a pure tensile run on it with stretch ratio of 5. Compare different element formulations of solids 1,-1,2,-2 and plot engineering stress vs stretch values. with a gven material card which is hyperelastic (rubber)   Explanation: Since this simulation is happening at…

Aim:         To model spotwelds for the given assembly of parts and run a crash test.   Procedure: Case 1 (Spotweld-Beam): 1. Import the model. Go to File - Open - LS-Dyna Keyword file. 2. 2. Create a Rigid wall. Go to Model - Create Entity - Rigid wall. Note: Rigid wall normal should be perpendicular to Box 3. Create…

Aim: To create a complete simulation file for crash analysis of a crash box having two different thicknesses of 1.2 mm and 1.5 mm from the given FE model of the crash box and produce the following deliverables. Input. k file and output files (D3PLOT, GLSTAT, SLEOUT, RCFORC) Animation of the final simulation Cross-sectional…

Aim:        Drop test for mobile phone model.   Procedure: 1. Import the model. Go to File - Open - LD-Dyna Keyword File. 3. It is seen that for drop 2 type of element are given i.e shell and solid element. so delete the shell elements in the parts. 2. In order to distinguish between the type of element we have to define…

Aim: F(u) = u3+9u2+4u use this equation and solve using both Explicit and Implicit Methods ( have a tolerance of 0.01).   Theory required: Explicit Analysis: The explicit analysis is preferred for the following reasons: In Explicit analysis no iterations are required. It is conditionally stable, Courant-Friedrich-Levy(CFL)…

Aim: Write a detailed report of unit conversion because of Different industries use different system of units as per their convenience. For example, automotive industries use kg,mm,ms as their standard unit system. Construction industries are likely to use tonne,m,s as their unit system. Similarly, PCB simulation in electronic…

Objective: To perform a side crash with the help of a given car model. To obtain the results as mentioned in the above question,  the following steps should be followed. Check the unit system and either follow [Mg mm s] or [Kg mm ms]. Create an appropriate interface, friction 0.2, and recommended parameters. Make…

Objective: To perform a frontal crash with the help of a given car model. To obtain the results as mentioned in the above question,  the following steps should be followed 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…

Objective: Create the mesh for bumper assembly,mesh size should be 6mm.  Run the crash tube model as it is. Change the Inacti=6 and run. Create the type 11 contact and run. Remove both notches  and remove boundary condition on rigid body node then run. Create a new notch in the middle ,select the whole section…

Objective: Perform the simulation as per the cases given below Case 1 Import the FAILURE_JOHNSON_0000.rad file and run the model as it is. Give the title name as Law2_epsmax_failure. Case 2 Import the case 1 rad file, named "Law2_epsmax_failure" and perform the simulation with failure plastic (EPS_p_max) and fail_Johnson…

Objective: 1.Using the crash beam file from the previous assignment, change the run time to 55 ms. 2. Change the number of animation steps during simulation to a minimum of 25 and maximum of 60. 3. Run the base simulation without any modification to element properties. 4. At the end of the simulation, do the energy error…

 Objective: 1. Check the material properties of the rail component and calculate the speed of sound in steel rail=_______ 2. The length of the rail is about 1000 mm.calculate the time takes for a shock wave to travel from one end of the rail to the other. 3.Time for sound to travel length of rail=______ 4.Edit the engine…

  Objective: Carry out the geometry cleanup operation on the given 3 files. Practice  Clip Repair Mounting Bracket There should not be any free edges, convert all of them into refine geometry. Clean the geometry. Extract midsurface. Clean midsurface geometry. Ignore holes less than dia 5mm. Create 2D mesh with target length…

Objective: 1. Mesh the component with the quality criteria, given below Target Element size - 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle Quad 45 8 Max angle Quad 135 9 Min angle Tria 30 10 Max angle Tria 110…

Objective: For the given MODEL 1, Create a Teramesh for Housing component with the following quality criteria. TetraMesh Generation Method: 2D to 3D Conversion Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units  Tet collapse: 0.15   For the given MODEL 2, Create a 3D Tetramesh with the following quality criteria. …

Objective: Mesh the component with the quality criteria, given below and assign thickness: Target Element Length = 4 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 6 Units 7 Min angle Quad 45 8 Max angle Quad 135 9 Min angle Tria 20 10…

Objective: Mesh the component with the quality criteria, given below and assign thickness: Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle Quad 45 8 Max angle…

Objective: Mesh the backdoor geometry of a car that is provided and it should pass the quality criteria given below. Target Element size - 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 3 Units 6 Max. Length 7 Units 7 Min angle…

Objective: Follow the below-mentioned quality criteria, mesh the component given below and assign thickness: Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min…

Objective: Mesh the Given component with the Size of 5 Units. Create 1D elements on the following component with given cross-section and DOF a. Rod element:- Translational DOF should be Constrained with RBE2 link Cross-Section: BOX- Dimension a= 12 mm                  …

Aim : For the given model do all the connection necessary required   Cad Model Image : Initial   Procedure: 1. Check the geometry 2. for connection of two part if there are hole we have to use bolt representation. There are two ways to create bolt creation we can use RBE2 many nodes (RBE2 cluster) to represent. …

Aim: For the given component, check for the geometrical errors and mesh with the given element Quality criteria. S.No  Quality Criteria  Value  1 Target/Average length   4 2 Minimum Length  2 3 Maximum Length  6 4 Aspect  3 5 Warpage 15 6 Skewness 45 7 Jacobian  0.7 8 Minimum…

Objective : For the given Plastic Bottle Cap model, check for the geometrical errors and take the mid surface by suitable mid surfacing techniques. PID and Thickness assignment has to be done for all the mid surfaces. Mesh the same with the given element Quality criteria. S.No  Quality Criteria  Value  1…

Objective : Follow the below-mentioned quality criteria, mesh the Floor Panel component, and assign thickness: Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle…

Objective : For the given CCB CAD model, Check for the Geometry cleanup (if required), Take the mid surface, and Mesh it with the below 2D element Quality criteria.  S.No  Quality Criteria  Value  1 Target/Average length   5 2 Minimum Length  3 3 Maximum Length  7 4 Aspect …

Aim :  The given Rear view mirror component, check for the geometrical errors and mesh the Surfaces with the given 2D element Quality criterias given below.    S.No  Quality Criteria  Value  1 Target/Average length   1 2 Minimum Length  0.5 3 Maximum Length  2   Use tetra elements to mesh the Volumes defined in the model…

Aim: To Perform 2D mesh of the given Hood Component.   Objective: For the given Hood model, Take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria. S.No  Quality Criteria  Value  1 Target/Average length  …

Q1.  Major Elements in the above automotive Diagram are, Battery. Starter Motor. Ignition Coil. Current and Voltage Regulator. Generator. Distributor. Breaker. Lights and Light Switches (Stop light, Indicator Light, Headlight, Tail / Stop Light, Plate Light, Scaled Beam,Beam Light, Instrument Light, Dome Light and…