Week 3 Sheet metal Bending challenge

import numpy as np from scipy.integrate import odeint import matplotlib.pyplot as plt import math # function that returns dz/dt def model(theta,t,b,g,l,m): theta1 = theta [0] theta2 = theta [1] dtheta1_dt = theta2 dtheta2_dt = -(b/m)*theta2 - (g/l)* math.sin(theta1) dtheta_dt = [dtheta1_dt,dtheta2_dt] return dtheta_dt…

import matplotlib.pyplot as plt import numpy as np from numpy import trapz fname = input("Enter the filename: ") if fname == 'engine_data.out': print('file is valid') else: print('file is invalid') exit() def compatibility_check(a): if 'CONVERGE' not in a: print('please provide converge output file to process') exit()…

1. What does popt and pcov mean? The curve_fit function returns two items, which we call popt and pcov.The popt argument are the best fit for 'a' and 'b'. The pcov variable contains the covariance matrix which indicates the uncertainties and corelation between parameters. This is mostly useful when the data has uncertainties.…

INTRODUCTION: - The Otto cycle is the theoretical cycle of interest when one is considering reciprocating SI engines. The four-stroke Otto cycle is made up of the following four internally reversible processes: 1–2, isentropic compression; 2–3, constant-volume heat addition; 3–4, isentropic…

OBJECTIVE- As we are working with the academic version,we need to cut the gear by half so as to bring the model within limits. For the challenge,we have to rotate the worm so as to get to almost end of the half cut and get results for Equivalent stress, Equivalent elastic strain and the total deformation in the model.…

CAR CRASH SIMULATION Car Crash Simulation has become an integral part for the Auto and passengers safety over the decade. Software lets engineers run crash tests inside computers rather than on roads. It also allows them to compare the performance of different designs early in the process while cars are still on the drawing…

INTRODUCTION- The Ansys explicit dynamics analyis system enables us to capture the physics of short duration events for the products that undergo highly nonlinear, transient dynamic forces. OBJECTIVE- The objective for this simulation is to use three different non linear materials for the bucket and analyse their behaviour…

DOUBLE UNIVERSAL JOINT WITH SPRING Double Universal joint (also known as Hooke's joint) connects driving shaft A and driven shaft B which are parallel but lie in different axis through an intermediate shaft C.The yokes of shaft A and B lie in the same plane and the two yokes of shaft C also lie in another plane. The correct…

LONG PISTON WITH CAM WHY ANALYSIS OF A LONG PISTON WITH CAM?? A cam is a rotating element that gives oscillating or reciprocating motion to the follower which is another element of this machine by direct contact. Cams generally do the opposite job to cranks, they turn rotary motion into reciprocating motion. Whatever…

iPHONE 6S BENDING SIMULATION Why bending of an iPhone?? Internal Apple documents (revealed by Judge Lucy Koh as part of an ongoing lawsuit against Apple regarding touchscreen failure due to bending) have revealed that Apple knew that the iPhone 6 and 6 Plus phones were more likely to bend than previous models. Apple…

MACHINING WITH PLANER  A planer is a type of metalworking machine tool that uses linear relative motion between the workpiece and a single point cutting tool to cut the work piece. A planer is similar to a shaper, but larger, and with the workpiece moving, whereas in a shaper the cutting tool moves.…

TENSILE AND TORSION TEST ON A STEEL SPECIMEN Tensile test- Tensile tests are used to determine how materials will behave under tension load. In a simple tensile test, a sample is typically pulled to its breaking point to determine the ultimate tensile strength of the material. The amount of force (F) applied…

OBJECTIVE: - Perform stress analysis on sheet metal bending setup for three different material and test following cases. Case 1: Apply Aluminium Alloy 1199, Copper Alloy NL and Magnesium Alloy NL to the sheet. Find out the Equivalent stress, Equivalent elastic strain and Total Deformation in the Y direction and…

 SPHERE PRESSING ON A PLATE Objective: - Perform the analysis to simulate a sphere pressing on a plate. We have to use Structural steel for both sphere and plate but the material of the plate must be Non Linear. Press the sphere onto plate 4mm downwards and retract it. The plastic deformation must be…

WIRE BENDING CHALLENGE Objective: - We will have to perform an analysis to simulate the bending of a wire in ANSYS.We will assign non linear materials for the wire- Copper Alloy NL Aluminium Alloy NL Magnesium Alloy NL      ii. Find out the equivalent stress and equivalent strain on the wire. Procedure:…

ANALYSIS OF STRESS CONCENTRATION ON A PLATE WITH HOLE Objective: - Compare the deformation and maximum stress developed on a structural steel model for the 2 cases.                              From an analysis standpoint, select which of the two…

ROLLING OPERATION ON A COPPER WORKPIECE Objective: - Equivalent stress for the whole setup Equivalent Plastic strain for the workpiece Directional Deformation in the Z axis for the workpiece Ensure that the edge of the workpiece is displaced by 90mm. Procedure: - Drag and drop the static structural analysis system and…

VERIFICATIONS OF WELD JOINTS Objective: - Simulate three different types of welding using three different weld materials- Weld Material used: Case 1.  Stainless Steel: In this case, the material of the plates must also be the same. Use Stainless steel for both weldments and plates. Case 2. Aluminium Alloy:The material…

STATIC STRUCTURAL ANALYSIS ON THE RAILWHEEL AND TRACK Objective: - The objective of the project is to perform a static structural analysis on railwheel and track and compare total Deformation, Equivalent Stress, and life under different loading condition. Also, implement the user-defined result and compare the total deformation.…

GRID DEPENDENCY TEST ON BEVEL GEAR SIMULATION GRID DEPENDENCY TEST Grid dependency test is done to find out how the solution depends on the grid size by running the simulation with refined mesh. Generating a finer mesh, results in higher accuracy of the analysis but with the additional cost on computation time and computational…

STATIC STRUCTURAL ANALYSIS ON SPUR GEARS USING DIFFERENT MATERIALS Objective: - 1.Perform static structural analysis on spur gears and find out the Equivalent stress, Total deformation and Stress intensity using- Cast Steel Cast Bronze Cast Iron 2.Which material will we choose for manufacturing of spur gears based…

There is no default system of units in LS dyna and also, LS dyna doesn't understand what units the model uses so units must be compatible. The users has to be conversant with converting quantities from one system of units to another. This allow us to use LS dyna in different scenarios. Different industries use different…

MESHING AND CONNECTION OF REAR SUSPENSION ASSEMBLY IN ANSA The suspension system of a vehicle refers to the group of mechanical components that connect the wheels to the frame or body. One of the most popular suspension system used in passenger car is the independent suspension with coil springs. It is both cheap and considerably…

MESHING OF AN AUTOMOTIVE IP SUBSTRATE BY USING ANSA The instrument panel is one of the most complex system in automotive interior, both from functionality and appearance viewpoints. A plastic Ip-substrate typically houses the structure underneath, climate comfort ductwork, modules such as radio, airbags etc. The CAE tools…

MORPHING IN ANSA Morphing is an advanced CAE modeling technique used to modify the shape of mechanical parts and assemblies without returning in the CAD system, which is time consuming and generates unexpected modeling preparation stages.The procedure is simple and fast, keeps the desired mesh pattern unchanged. Mesh morphing…

CONNECTIONS FOR NVH ANALYSIS IN ANSA  All connection types are characterized by their type, id, location in space and some additional information concerning geometric features, such as diameter, width or height. There are three types of connections based on the order of the connection's shape: - connection_0d are…

Below is the meshed model of Intake mainfold: - It took me 4 hours and 25 minutes to mesh the model with shell elements and later convert it to tetra mesh.

 TETRAMESHING OF REARVIEW MIRROR  ANSA consists of two modes for generation of solid elements. The unstructured mesh creation algorithms like tetras and hexa interior mesh and the structured mesh algorithms like Map, Extrude, Layers, HexBlock etc. AIM: -             1. Check for…

Meshed model: -

  TOPOLOGY CLEANUP AND MESHING OF BOTTLE CAP   AIM: - Check for geometrical errors and fix them to extract a proper mid-surface. Perform geometry cleanup, close gaps, modify or create new faces etc. Mesh the part with a uniform mesh and an average element length of 1mm. Improve the mesh by manually optimizing…

MID-SURFACING AND MESHING OF HOOD COMPONENT Hood is an essential part of the vehicle. It protects the engine and avoid any kind of impacts. In order to meet these requirements, analysis of hood rises as a compulsory step. So the quality of meshing needs to be good and meet the given criteria for an accurate analysis. AIM:…

OBJECTIVE: How to create different types of one dimensional elements. Getting familiar with the one dimensional menu bar. PROCEDURE: Creating a Rod element with only translational degree of freedom and RBE2 link - Import the IGES file using the import geometry option under import solver deck tool. To represent the enitre…

GENERATING MESH ON PLASTIC COMPONENT OF A PASSENGER VEHICLE SIDE DOOR Computer-aided engineering (CAE) software has been used for many years in the plastic industry, identifying the most appropriate mesh geometry and density remains a challenge. It can affect the accuracy of the simulation, the time and the costs. …

CONNECTORS Connectors are simply a database of information defining specific requests for connections at specific locations. They are a medium to create both solver independent or solver dependent connections between geometric and FE entities. Connectors are primarily used to create spot and seam welds, but also used to…

CREATING TETRAHEDRAL ELEMENTS USING HYPERMESH    Tetramesh for housing and hub assembly: - Tetrahedral elements are solid elements which have been extracted from 2-D tria elements. HyperMesh builds 4 and 10-noded tetras. HyperMesh provides two methods of generating a tetrahedral element mesh. The volume…

TWO DIMENSIONAL ELEMENTS MESHING OF THE HOOD Hood is an essential part of the vehicle. It protects the engine and avoid any kind of impacts. In order to meet these requirements, analysis of hood rises as a compulsory step. So the quality of meshing needs to be good and meet the given criteria for an accurate analysis.…