BIRD-STRIKE ANALYSIS ON AN AIRCRAFT WINDSHIELD USING LS-DYNA

BIRD-STRIKE ANALYSIS ON AN AIRCRAFT WINDSHIELD USING LS-DYNA   Introduction: A bird strike refers to collision between an aircraft and a bird. It mostly occurs at the low altitude or on the ground i.e. runways during take-offs and landings. With the increase in number of annual flights, birdstrike incidents have also…

MESHING OF SIDE DOOR AND DASHBOARD MODELS OF A CAR  ANSA,developed by BETA CAE Systems, is a popular pre-processing tool used in CAE industries.   Objective: To perform geometry cleanup and create 2D mesh for side door and dashboard models of a car with the given element quality criteria and also to assign…

Objective: To perform a structured desirable mesh pattern on a Lamborghini Aventador car model using Hypermesh. Methodology: 1. Geometry cleanup 2. Surfaces splitting 3. Meshing each surfaces one by one 4. Correcting mesh flow Geometry cleanup: Hypermesh can be directly used to access the geometric models from leading…

BIRD STRIKE ANALYSIS ON AN AIRCRAFT ENGINE USING LS-DYNA   Introduction: A bird strike refers to collision between an aircraft and a bird. It mostly occurs at the low altitude or on the ground i.e. runways during take-offs and landings. With the increase in number of annual flights, Birdstrike incidents have also…

HYPERELASTIC MATERIAL MODELS IN LS-DYNA   Objective: The following are the objectives of the project,     > To conduct a uniaxial tensile test for a Dogbone specimen with 100 percent strain.     > To determine the Hyperelastic Mooney-Rivlin and Ogden material constants obtained…

CREATION AND DEMONSTRATION OF JOINTS USING LS-DYNA   Objective: To create various types of mechanical joints like revolute joint,spherical joint,cylindrical joint and translation joint using LS-DYNA. Also to demonstrate their working mechanisms. Mechanism: Mechanism is a collection of bodies (links) that may be interconnected…

EXPLICIT  AND  IMPLICIT  METHODS  TO  CALCULATE  DISPLACEMENT  OF  A  BAR  UNDER  TENSION   Introduction: Explicit and implicit methods are approaches used in numerical analysis for obtaining numerical approximations to the solutions of time-dependent ordinary…

  MATERIAL MODELLING FROM RAW DATA USING LS-DYNA   Objective: LS-DYNA contains a wealth of material models that allow for the simulation of transient phenomena required to determine material model parameters where material properties are converted into values required by constitutive equations. The main aim of…

MASS SCALING IN LS-DYNA   Objective: One of the most important techniques in CAE industry to reduce the run time of an explicit FE analysis is 'Mass Scaling'. The main objective of this report is to make use of mass scaling technique to effectively reduce the simulation run time and to ensure the stability of mass…

EXPLICIT AND IMPLICIT ANALYSIS IN CAE   Objective: To solve the equation `F(u) = u^3+9u^2+4u` using both explicit and implicit methods with a residual tolerance of 0.01. In the equation, F-Force in the bar and u-displacement in the bar. The problem is solved by both explicit and implicit analysis methods. In…

PYTHON PROGRAM TO BUILD AN OTTO CYCLE AND PLOT THE P-V DIAGRAM Objective: To write a Python program to build an Otto cycle and plot its P-V diagram.Also to calculate its thermal efficiency. Physics involved: Otto cycle: An Otto cycle is an idealized thermodynamic cycle that describes the functioning of a typical…

PYTHON PROGRAM TO SOLVE THE EQUATION OF MOTION OF A SIMPLE PENDULUM WITH DAMPING Objective: To write a Python program that would solve the equation of motion of a simple pendulum with damping and simulate the pendulum motion. Simple Pendulum: Any weight which is suspended from a pivot and can swing freely when displaced…

PYTHON PROGRAM TO PERFORM CURVE FIT Objective: To write a Python program that would perform a curve fit for a range of values of temperature and specific heat capacity of a fluid at constant pressure. Curve fitting: Curve fitting is the way we model or represent a data spread by assigning a best fit function (curve) along…

PYTHON PROGRAM TO READ AN ENGINE DATA FILE AND CREATE A DATA VISUALIZER   Objective: To write a Python program that would read the file containing an engine's data and create a data visualizer. Also to plot the P-V diagram of the engine and calculate its power output and specific fuel consumption. Data analysis: Python…

TOPOLOGY OPTIMIZATION OF BRAKE PEDAL ARM USING ANSYS WORKBENCH   Objective: To optimize for the structural layout of a brake pedal arm within a given design space  by using Topology optimization module in ANSYS workbench. In this project a linear static analysis is carried out to minimize the compliance of the…

CRASH BOX SIMULATION USING LS-DYNA   Objective: A crash box is a highly energy absorbing structure that crashes on application of loads and reduces impact on other components nearby. The main aim of this challenge is to simulate how a crash box behaves during frontal impact into a rigidwall using LS-DYNA. Also, to…

Crash simulation of Spotweld modeled assembly using LS-DYNA   Objective: Spot welding is the most common technique for connecting metal parts of an automotive body. A few thousands of these spot welds are applied to a car body-in-white structure during an automated assembly process. Therefore it’s obvious that…

Calculation of Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model in LS-DYNA   Objective: The main aim of this work is to calculate the stretch ratio of a cubic block subjected to tension, used with element formulations -2,-1,1,2 using Ogden_Material material model in LS-DYNA. Also to compare…

HEAD IMPACT SIMULATION USING LS-DYNA   Objective: The objective of this project is to perform a head impact simulation of a pedestrian headfoam model against a rigid wall and a hood of a car using LS-DYNA. Also, the head impact coefficient (HIC) should be calculated for each case using LS Prepost. Pedestrian head…

DROP TEST OF A CELLPHONE USING LS-DYNA Objective: Drop test simulation plays an important role in investigating impact behaviors and identifying weak points of a cellular phone at design stage since actual testing is expensive and time consuming. The main aim of this challenge is to simulate how a cellular phone, placed…

Objective: To write a python program for the calculation of drag force against a cyclist for following two cases. Case 1: Keeping the drag coefficient as constant and varying the cyclist’s velocity Case 2: Keeping the cyclist’s velocity as constant and varying the drag coefficient   Physics involved: A…

Objective: To perform the bending of iPhone simulation and obtain the fatigue life of material using ANSYS workbench. Case 1:The simulation is carried out by placing the pushing fingers near one of the side edges of the iPhone. Case 2:The simulation is carried out by placing the pushing fingers at the middle of the iPhone.…

MESHING  OF  IP SUBSTRATE  MODEL   Objective: To perform geometry cleanup and create 2D mesh for an IP substrate model with the given element quality criteria and also to assign midsurface thickness to the shell elements using ANSA. Methodology: Geometry cleanup Midsurface extraction Meshing as per…

MESHING  OF  REAR  SUSPENSION  MODEL  AND  IMPLEMENTING  CONNECTIONS   Objective: To create 2D mesh and 3D for a rear suspension model with the given element quality criteria and to assign midsurface thickness to the shell elements using ANSA.Also to implement connection in the required…

MESHING AND MORPHING OF SHEET METAL COMPONENT   Objective: To mesh a sheet metal component according to the quality criteria and perform a few morphing techniques on the geometry of the sheet metal. Procedure: The given sheet metal component is imported into ANSA. Geometry cleanup: The given sheet metal component…

CONNECTION OF REARDOOR FE MODEL: Objective: To peform connections using various connection techniques for a reardoor FE model using ANSA. Procedure: The reardoor FE model is imported into ANSA. The various parts of the door are separated and assigned with individual properties accordingly to view in PID mode.    …

TETRA  MESHING  OF  ENGINE  INTAKE  MANIFOLD  MODEL Objective: To check for the geometrical errors and perform volume meshing using tetra elements for an engine intake manifold model as per the given quality criteria using ANSA. Methodology: 1.Geometry cleanup2.Shell meshing for outer surfaces3.Volume…

TETRA  MESHING  OF  REARVIEW  MIRROR  MODEL Objective: To check for the geometrical errors and perform volume meshing using tetra elements for a rearview mirror model as per the given quality criteria using ANSA. Methodology: Geometry cleanup Shell meshing for outer surfaces Volume meshing Quality…

MESHING OF SWITCH PANEL COMPONENT AND SHEET METAL COMPONENT Objective: To create 2D mesh for a switch panel and a sheet metal component with the given element quality criteria and to assign midsurface thickness to the shell elements using ANSA. Methodology: Geometry cleanup Midsurface extraction Assigning suitable PID…

MESHING OF A BOTTLE CAP MODEL Objective: To create 2D mesh for a bottle cap model with the given element quality criteria and to assign midsurface thickness to the shell elements using ANSA. Methodology: Geometry cleanup Midsurface extraction Meshing as per criteria Assigning thickness property Quality criteria: Procedure:…

2D MESHING OF HOOD OF A CAR Objective: To create 2D mesh for the given hood component of a car according to the given element quality criteria using ANSA. Methodology: Geometry cleanup Midsurface extraction Assigning shell property Meshing as per criteria Quality criteria: Procedure: As the given component is a sheet metal…

Objective: To perform a transient structural analysis on a piston and cam mechanism model and run the analysis with frictionless contact, frictional contacts with coefficients 0.1 and 0.2 and compare the results for Equivalent stress, Directional deformation and Equivalent elastic strain between each cases using ANSYS…

Objective: To perform a frontal impact car crash simulation in the explicit dynamic analysis module using ANSYS workbench and also perform a parametric study using three different values for thickness for the car body. Procedure: Explicit dynamic analysis module is opened in the project schematic window of ANSYS workbench…

Objective: To perform an explicit dynamic analysis on a bullet penetrating a bucket model setup using ANSYS workbench. Procedure: Explicit dynamic analysis module is opened in the project schematic window of ANSYS workbench and renamed as Bullet penetrating a bucket. Materials used: Three different non linear materials…

Objective: To perform a tension test and a torsion test on the given specimen in Explicit dynamic analysis using ANSYS workbench. Procedure: Explicit dynamics module is opened in the project schematic window of ANSYS workbench and renamed accordingly as tension and torsion. Material used: Steel 1006 material is selected…

Objective: To perform an explicit dynamics simulation on machining with planer setup and to find out results for equivalent stress,total deformation and an user defined result such as temperature of the body. The analysis is to be performed for two cases. Case 1: Cutting tool with a velocity of 20000 mm/s Case 2: Cutting…

Objective: To perform a transient structural analysis on a double universal joint with a spring made up of three different materials using ANSYS workbench and compare the results of Equivalent stress and Total deformation. Procedure: Transient structural analysis system is opened in the project schematic window of ANSYS…

Objective: To perform a transient structural analysis on a worm gear assembly using ANSYS workbench.The gear is cut by half and the simulation is demonstrated for Equivalent stress, Equivalent elastic strain and the Total deformation in the model. Procedure: Transient structural analysis is opened in the project schematic…

Objective: To simulate a sphere pressing a plate and demonstrate the plastic deformation on the plate using ANSYS. Procedure: Static structural analysis system is opened in the project schematic window of Ansys workbench. Structural steel Non-linear material is added to the Engineering data,chosen from the general non…

Objective: To simulate bending of wire made up of three diiferent non-linear materials using Ansys. Materials used: The materials used for the wire,required for the analysis are Copper alloy non-linear-Case 1 Aluminium alloy non-linear-Case 2 Magnesium alloy non-linear-Case 3 Procedure: Static structural analysis system…

Objective: To simulate rolling operation on a workpiece made up of copper using Ansys. Procedure: Static structural analysis system is opened in the project schematic window of Ansys workbench and renamed as Rolling copper. In Engineering data,copper material is added required for the analysis. Geometry: The given model…

Objective: To perform static structural analysis for the given geometry using three different weld materials. Weld Material used: Case 1.  Stainless Steel: In this case ,Stainless steel is used for both weldments and plates. Case 2. Aluminium Alloy:The material to be chosen for this case is Aluminium alloy(high strength,…

Objective:  To perform a static structural analysis on Railwheel and track and compare Total Deformation, Equivalent Stress, and life under different loading condition. Also, implement user-defined result and compare the total deformation with the inbuilt result by ANSYS. Case 1: Multiply the bearing load by…

Objective: To perform grid dependency test for bevel gear with different mesh sizes, i.e., 6, 5, and 4 mm. Evaluate and Compare their von-mises stress, equivalent elastic strain, and total deformation. Grid Dependency Test: Grid dependency test is to investigate how the solution depends on the grid size by running the…

Objective: To carry out a static structural analysis for spur gear using three different materials and to compare Equivalent stress, Total deformation and Stress intensity. Procedure: 1.Static structural is opened in the project schematic window in Ansys workbench.  2.In Engineering data,the following materials are…

Objective: To design plates ,one with single hole at the centre and another with multiple holes as given in the problem statement and analyse for stress concentration and total deformation in the plates. Case 1:Plate with single hole Plate dimensions: Length=300mmHeight=120mmThickness=30mmCircular Hole at the center:Diameter=60mm…

OBJECTIVE: To perform Batch-meshing on the components with the given criteria and assign the nonlinear material property Steel to them. PROCEDURE: HOOD: 1. The criteria file is created by using preferences -criteria file settings and the given values are entered and saved. And the saved file is browsed in the batch mesh…

OBJECTIVE: To attach the given parts in the model with the connectors mentioned. PROCEDURE: Connectors are used to connect the different FE entities. After the meshing we need to connect the components with various connectors like seam weld, spot weld, bolt,adhesives are also used. Without connectors the proper results…

Objective: To create 3d tetra mesh for the given models. Procedure: 1.Housing To create quick tetramesh goto view => browsers => hypermesh => utility => geom./mesh => quick tetramesh. Set the parameters,vol. comp list = components and selected all ,minimum tria angle as 20, mesh size as 5mm. mesh density…

Objective: To mesh the given hood component according to the given meshing criteria. Procedure: The given component is  Each component of the hood is subjected to midsurface extraction separately.     For meshing,automesh option is used with element size as 5mm and mixed element type. Except latch component,other…

Creation of different 1D elements with mid surface extraction: Objective: To create mid surface for the model and create 1D elements on the given component. Procedure: Import the model into the hypermesh Create mid surface of two brackets seperately. Delete Solid bodies. Create the rbe2 and rbe3 links from 1D option. Create…

SIDE CRASH ANALYSIS OF A NEON BIW MODEL OBJECTIVE: To perform the side crash analysis of neon BIW model on the rigid pole and analyze the b pillar, fuel tank, hinge pillar intrusion and the energy curves are generated for the BIW model during the impact and finally the peak velocity for the inner node of the door is also…

FRONTAL CRASH ANALYSIS OF NEON BIW OBJECTIVE: To simulate the frontal crash analysis of neon BIW is by creating a rigid wall in front of the bumper to impact. The distributed mass of 700Kgs is created to move the COG of model at the middle and near to driver\'s area. Finally, the simulation is Pre-Processed using HYPERMESH,…

Comparing the base setup simulation results and different kinematic condition simulation results OBJECTIVE: -The main objective of assignment 5 is to simulate the crash tube and create interface contact, remove and create the new notch and also interpolate how does the notch affects the results. Mesh the Bumper Assembly…

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