Week-7 Head Impact

How safe is Tesla’s Auto Pilot feature? Tesla vehicles have accounted for nearly 70% of reported crashes involving advanced driver-assist systems since June 2021, according to federal figures. But officials warned the data is incomplete and isn’t meant to indicate which carmaker’s systems might…

Objective - To simulate a situation when a Bird collides with an Aero Engine blade and check stresses developed in the blades.   The model considered for analysis – Bird and Aero Engine Blade Assembly Inputs -  Unit considered – kg mm ms Stress is in GPa Strain is in mm/mm Stress vs Strain curve provided…

Objective - To prepare Material card for Hyperelastic rubber material and solve it using Ogden and Mooney Rivlin material card on a Dog bone specimen and check which of the two gives results closer to input Stress vs Strain graph. Model Consieredered for Analysis - Dog Bone Specimen   Inputs -  Curve…

Tension Test on Dog Bone Specimen -  Model considered for analysis - Dog Bone Specimen Inputs -  Curve from Input provided was considered and data points were extracted for Curve 2 using Data Digitizer. Unit conversion for Stress from ksi to GPa Strain converted from % to mm/mm Effective Plastic Strain = Total…

Objective - To perform Mass scaling and understand the change in computational time by varying values of DT2MS and TSSFAC. Mass Scaling - Mass scaling refers to a technique whereby non-physical mass is added to a structure in order to achieve a larger explicit time step. Difference between using a positive or negative…

Objective - To perform Head impact analysis and predict HIC values and further check if it is below the limiting standards of FMVSS 201U. Case 1 - Simple Head Impact on a Rigid Wall Model considered for analysis - Shell Elements for Head and Rigid Wall for Hood        Units System considered –…

Aim - To perform Tensile test on a solid rubber cube which could be stretched upto 5 times its original length with different element formulations and conclude which of the element formulation could predict real life scenario. CASE – 1 Elform = 1 Model dimensions = 10X10X10 mm Case Setup -  Units System considered…

Objective - To perform a crash test b/w to components connected with 6 spot welds modeled as both beams and solid elements and check the differences in parameters w.r.t. change in modeling approach. CASE – 1 Spot Welds modelled as Beams Model considered for analysis - Shell elements for Crash Box and Beam elements…

Objective - To perform simulation of a crash box moving horizontally with a speed of 50 Kmph and crashing against a wall and check its deformation behaviour and evaluate energy and forces. Geometry Details -  CASE – 1 Crash Box Thickness = 1.2 mm Case Setup -  Units System considered – gm-mm-ms Elastic…

Objective - To perform a Drop Test of a phone and check how the impact effects the overall design and if stresses are within limits. Changes made to the model -  Unit system followed - tonne mm s Solid elements created for Ground deleted instead of shell elements to keep less node count. Shell and Solid sections with…

Aim - To solve given equation with both Implicit and Explicit method and compare the obtained solution with exact solution to learn which of the two methods have better accuracy. Implicit vs Explicit Analysis Explicit Analysis – It is an incremental procedure which tends to update Stiffness matrix at the end of each…

Objective - Convert SI unit system values to different unit systems and prepare a consistent report also find a Conversion factor for various parameters. Given Measurements – Mass = 1Kg Length = 1m Time = 1s Force = 1N Stress = 1Pa Energy = 1Nm Density = 1Kg/m3 Young’s Modulus = 210 GPa Velocity = 56.33 Kmph…

Objective - To perform Side Pole crash on scaled model and check its Deformation pattern and simultaneously extract forces and displacements at multiple locations. Changes made to the model -  Original Model with 300K Nodes -  Adjusted Mass and COG for simulation model as per 300K nodes ref model -  Unnecessary…

Objective - To Perform Frontal Crash Simulation for Scaled Model and Extract Forces and Displacement at multiple locations. Changes made to the model -  Mass and COG Changes -  Image 1 - Adjusted Mass and COG for simulation model as per 300K nodes ref model Image 2  - Original Model with 300K Nodes…

Objective - To perform multiple cases by changing parameters/modify fe-modeling and observe change in contact energy and deformation pattern as well as perform meshing for bumper assembly. Case setup -  Case 1 - The model is run without any changes. Case 2 - Case 1 hm file was taken and Inacti was changed to 6 and…

Objective - To perform multiple cases with different material cards and parameters and further compare the results to conclude which case could best represent on-field situtation. Comparison of all 7 cases based on errors and run time. Case No Total No. of Cycles Energy Error (%) Mass Error Simulation Time (s) Case 1 –…

Objective - To Simulate a crash beam scenario with deafault parameters (Baseline) and Recommended parameters (Iteration 01) and give detaied report on results comparison. Baseline - With default parameters model was run and results were obtained. Iteration 01 - Recomended parameters for Ishell, Ismstr, Ish3n, N, Ithick,…

Objective - To answer given questions with detailed explanations and mesh given components with quality criteria's mentioned. Check the material properties of the rail component and calculate the speed of sound in steel rail. Document – FIRST_RUN_0000.rad E=210000 N/mm2 Density = 0.0078 g/mm3 Poissons ratio = 0.29…

Objective - To prepare quality shell mesh for given models and mesh parameters. Ideal Mesh Size = 5 mm, Min edge length = 3.5 mm, Max edge length = 7 mm Practice Model   Geometry Received and Mesh Created. Procedure -  Mid Surface was extracted and holes were ignored (Used filler surface and toggled edges) since…

Objective -  To prepare a model to check Deformations of an Aluminium Alloy plate (100X100X5 mm) when its hit by a steel ball weighing 4g at speed 50 m/s, 250 m/s and 500 m/s. Also determine the veloctity at which the plate will be ruptured. Analysis Procedure - Explicit Dynamics on Ansys Workbench Geometry - …

Objective - To install a scripted extension and convert it into Binary Extension and perform several operation using it. What is an API? An Application Program Interface (API) is a set of routines, protocols, and tools for building software applications. Basically, an API specifies how software components should interact.…

Objective - To construct CAD model of Butterfly Valve in Design Modeler following the prints provided. Tools Used in Design Modeler - Plane, Sketch, Extrude, Move, Slice, Chamfer, Fixed Radius Blend, Projection and Boolean. Procedure - We can start from the Main body by preparing a sketch and then by using extrude we can…

Aim: To prepare a Python code to extract data from an Output file and perform various operations Governing Equations: Area under the curve is solved by integrating points between State values         ∫_v1^v2▒Pdv+∫_v2^v3▒〖Pdv+∫_v3^v4▒〖Pdv+∫_v4^v1▒Pdv〗〗         The…

Aim: To prepare a Python code to perform Curve Fit for a given data sample. Governing Equations: Linear function - ax^2+bx+c Cubic function - ax^3+bx^2+cx+d and so on, For a better fit we can increase the no of polynomials. Objective: By using curve_fit function in python we need to get a best fit for the given data…

Aim: To Simulate Simple Pendulum by solving ODE Governing Equations: Here b is the damping coefficient, L = length of the string, m = mass of the bob, g = gravitational pull On solving the above equation, we get angular velocity w.r.t. time Objective: To simulate Python code to solve higher order ODE and obtain animation…

Aim: To Simulate generic code for Otto Cycle in Python Governing Equations: An Otto cycle is an idealized thermodynamic cycle that describes the functioning of a typical spark ignition piston engine.   The Otto Cycle, describes how heat engines turn gasoline into motion. Like other thermodynamic…

Code for Rankine Cycle Simulator Function used - XSteam.m   %Rankine Cycle Simulator %Inputs for Inlet Pressure and Temperature p1= 0; p2=0; t1=0; while p1<=0 p1 = input(' Please enter the value for Pressure entering Turbine in bar \n'); if p1<=0 warndlg('Please enter value greater than 0'); end end while p2<=0…

The program is designed such that it will take 2 inputs -  Element name to display plots for that specific element. Temperature value which would be used further in the program to evaluate specific heat, enthalpy and entropy values for all elements at either low temperature range or high temperature range based on…

Genetic Algorithm is one of the machine learning algorithms that is used to get optimized results. It is widely used today in business, scientific and engineering cicrles. Genetic Operators-  Selection Operators - Process of selecting two or more parents from the population for crossing. Purpose of selection is to…

https://drive.google.com/file/d/1gE2gv6FfOTgI6_ndVtg-9V62I2AMqKOm/view?usp=sharing   Main issue faced was with plot on Y axis. Finally realised Y axis is L*cos(dtheta/dt) Unable to upload the animation file in the box below so shared the G-Drive link. %Matlab program to simulate a simple Pendulum clear all close all…