Week - 5 - Modelling Spotwelds

NTRODUCTION: Ogden material model is a hyperelastic material model used to define the non-linear behaviour of materials like rubber and polymers. This material model is generally used for materials showing incompressible, isotropic and non-linear stress-strain behaviour. In this study, a solid cube of rubber material modelled…

OBJECTIVE: To perform a bird strike simulation in LS-DYNA and evaluate the results. PROCEDURE: The project file contains hub, blade, engine casing and bird geometry. The blade rotates at a constant velocity and the engine casing should remain stationary. The cylindrical bird travels along its own axis toward engine and…

Objective:                                                                                         …

Objective: To create a Hyperelastic material model with stress-strain curve data and extract Mooney Rivlin and Ogden constant parameters and Evaluation the material constant with actual material data. Introduction Hyper-elastic Material Hyperelastic material models are regularly used to represent the large deformation…

Objective: Using the diagram of the true stress-strain curve given for graphite iron casting, create a material model for the Dogbone specimen  Validate the material model by performing a tensile test on a Dogbone specimen Procedure for material modeling: Data Extraction from the Curve Image: In general, The material …

Objective: To introduce mass scaling Technique to reduce the computational time for the analysis and The limit for the mass scaling is restricted to 8% and simulation as to be completely stability Introduction: Timestep Significance  In the simplest case (small, deformation theory), the time step is controlled by…

Objective: To perform head impact analysis and calculate the HIC (Head injury criteria/coefficient) value First case: Simple head-model and rigid wall Second case: Child head-foam and rigid wall Third case: Child head-foam and bonnet Introduction: Car-pedestrian accidents account for a considerable number of automobile…

Objective: To Perform Side Crash Analysis on Dodge Neon BIW Using Test Protocols Of FMVSS 214 Standards. FMVSS 214 regulation: A 254mm diameter pole impact on a 90° oriented car, traveling at 35km/h, also called “oblique pole test”   Impact pole places such that the impact line is aligned to the center…

Objective: To Perform a Crash Simulation on a Crash Box with Different Thickness and Derivate and compare the following output. Cross-sectional forces at the midplane. Acceleration of a node at the midplane. Maximum directional stress and strain along the longitudinal axis. Energy plots Comparing acceleration and stress/strain…

Objective: To Model a Spot weld with Beam and Solid Element in Sheet Metal and compare the results with different parameters. Model: The upper and lower metal sheets have meshed with shell elements. These two Sheet metals have to be connected with spot welds using beam and solid elements separately. Basically the spot…

Objective:  To Simulate a bullet penetrating a bucket with different Non-linear Materials Case1: Aluminum Alloy NL Case2: Copper Alloy NL Case3: Stainless Steel NL   Geometry The Geometry is been imported the Stiffness Behavior of bullet is set to  be Rigid   Material In all three cases the bullet…

Objective : To simulate the bending of Iphone and obtaining the fatigue life of the Phone  Case 1 Geometry The geometry is been import to the design module and the stiffness behavior  of the fingers are set to be rigid Materials Aluminum Alloy NL   Glass Polyethylene Structural  steel These are four…

Objective:  To Perform the Drop Test Simulation of Mobile Phone on the Floor using the Initial velocity Boundary entity. Model: The Model Consist of two parts the mobile phone and the Floor which is already been meshed   Material Models: The mobile phone, we are using Aluminum Material properties Although many…

Objective  : Use  Cast Iron(ductile), Cast Steel, and Cast Bronze as a material, carry out static structural analysis of spur gear and find out Equivalent stress, Total deformation, and stress intensity. Compare the results obtained by using 3 different materials for gears   Geometry Geometry is…

Objective: To solve a simple non-linear problem  A bar under tension is with both implicit and explicit approaches with the force in the bar being a non-linear function of the displacement. Introduction:   For all nonlinear and non-static analyses, incremental load (also known as displacement steps) are…

Objective: To Perform Roof Crush Analysis On  Dodge  Neon BIW  Using Test Protocols Of FMVSS 216 Standards. Introduction : Roof crush simulation Federal Motor Vehicle Safety Standard No. 216 (FMVSS 216) first published in 1971 specified the test requirements and configurations of Roof crush process. The…

Objective: To Perform Frontal Crash Analysis On  Dodge  Neon BIW  Using Test Protocols of FMVSS 208 Standards Introduction: The Full Frontal Fixed Barrier Crash test (or Rigid Barrier test) represents a vehicle-to wall full-frontal engagement crash with the vehicle moving at the same impact velocity.  The…

Objective: Perform Transient Structural Analysis on Slider Crank Mechanism  Case 1: Using Structural Steel For all the Components and Assigning No Contact Region  for the Model  Case 2: Create contacts between the various slider crank components and assign material properties to the geometry with…

Objective: Perform the sheet metal bending challenge for different materials and settings Case 1:Aluminium Alloy 1199,Copper Alloy NL and Magnesium Alloy NL. Find out the Equivalent stress, Equivalent elastic strain and Total Deformation in Y directionand compare the results for the three materials. Case 2:With the…

Objective: To Simulate the Snap-Fit analysis For Plastic Buckle-Clip Case1: Moving the clip by keeping the buckle fixed. Case2: Moving the buckle by keeping the clip fixed   Geometry   Material POM is used For both Buckle and clip   Connection Contact Frictional type of contact is created between the…

Objective: To Program A Rankine cycle Simulator using a MATLAB Program Introduction of Rankine Cycle: The Rankine cycle closely describes the process by which steam-operated heat engines commonly found in thermal power generation plants generate power. Power depends on the temperature difference between…

Objective: To Parsing NASA Thermodynamic Data file and to calculate the Enthalpy(H), Entropy(S), Specific Hea(Cp), and Molecular Weight of the Species. Introduction: Nasa Thermodynamic data file has the coefficient that is required to calculate the thermodynamic properties such as Cp, H, S. We are going to extract…

Objective: To find the Global Maxima of Stalagmite Function Using Genetic Algorithm in MATLAB                                                               …

Objective: To program and plot the curve fitting for cp data of Oxygen and also measure the fitness for the curves and obtain the Perfect Fit using MATLAB.   Curve Fitting Curve fitting is the process of constructing a curve, or mathematical functions, which possess the closest proximity to the real series…

Objective: To Simulate the Crashbox with Two Contact Interface and To Study the Effect of Grooves in the Crash box Performance Case 1: With Type 7 Contact Interface and Inacti = 1000 NO action Case 2: Type 7 and Inacti=6. Case 3: Type 7 and  Type 11 contact interface. Case 4: CrashBox Without any Grooves. Case 5:…

  Objective: To write a program to solve the provided ODE of a simple pendulum and to create an animation File to display the motion of the pendulum A simple pendulum consists of a mass m hanging from a string of length L and fixed at a pivot point P. When displaced to an initial angle and released,…

Objective : To Simulate Ruptured Plate using different Material Card and Comparing the results. Case 1: Law 2-M2_Plas_Johns_Zeril – Elasto-plastic Case 2 : Law 2 M2_Plas_Johns_Zeril  with Fail_Johnson and with Ixfem (Crack Formation) Case 3 : Law 2 M2_Plas_Johns_Zeril  wihout Fail_Johnson…

Objective :  To run simulation of basic crash box with two different shell element properties and compare the results  Case 1 Shell  element Parameters  Ishell =4 Q4 visco elastic hourglass without orthogonality (Hallquist ) Ismstr=2 Full geometric nonlinearities (default)with possible small…

Objective: Calculate the speed of the sound in steel rail. we know the speed of shockwave travel at different speed  for different materials and its depends on the stiffener behavior of materials so to calculate the speed of the sound we need the material properties that are assigned and Work unit System , these information…

Objective: To simulate the forward kinematics of a 2R Robotic Arm using Matlab program and to create an animation file of the plot.   2-R Robotic Arm         2-R Robotic arm is made up of a base, two links and two rotating joints. The first link is connected to the base and the second link…

Objective : To Perform a Parametric Study to analyse a Frontal Impact Car Crash Test   Geometry The Geometry is been imported , The Geometry is cut into half since in symmetric geometry so that it will reduce the mesh element and computation time.   Materials Structural Steel is used for the Wall Stainless Steel…

Objective: To Wirte a program in Matlab to calculate  aerodynamic drag force and the study relation between Velocity vs Drag Force Drag cofficient vs Drag force Introduction: Aerodynamics is the study of how air flows over objects and the forces that the air and objects exert on each other. Drag is…

Objective : To conduct geometry cleanup and to extract  mid-surface  and then carry out 2d meshing for the given components Procedure : First import the geometry into hypermesh Since we are going to perform 2d mesh with the  mid-surface extract from the model ,we will delete  solid body in the model…

Objective: To simulate a sphere pressing on a plate and experiencing plastic deformation on the plate Geometry The geometry is been imported  , if you notice  the geometry the model is quarter of original model since the whole body is symmetry     we have cut down only the quarter model and…

  Grid dependency Mesh refinement is a very important factor for determining an accurate solution                                                               …

Perform a static structural analysis on the Railwheel and Track setup and Problem 1: With two Different Bearing Load 500000N and 100000N and   Compare the Total Deformation, Equivalent stress and the life under both the loads Problem 2: Implement a User defined result and calculate the Total Deformation…

Objective: To perform a static analysis on weld joint with three different materials.  Material used: Case 1.  Stainless steel for both welds and plates. Case 2. Aluminum alloy(high strength, wrought) for Weld .Plate material to be used as stainless steel Case 3. Bronze as the weld material. Stainless Steel to…

Objective:  To Perform a transient structural analysis on a universal joint with Different materials Case1: Structural Steel Case2:  Stainless Steel  Case3: Titanium alloy Geometry: The Geometry is been imported in design module Material These materials are been used on the joint with the springs alone.…

Objective: Perform a Transient Analysis on a Piston and Cam mechanism  with different friction co efficient Case1: Frictionless Case2: Co efficient friction 0.1 Case 3 : Co efficient friction 0.2 Geometry The geometry is been imported , since we\'re gonna see the strain and strain developed in the follower, we are…

Tension Test Objective: To perform the tension test on the work piece   Geometry : The Geometry is  been imported to the design module   Material Steel 1006 is been used for the work piece Coordinate System Two Coordinate system is been created on the model  for mesh refinement      Mesh…

Objective:  To simulate the machining operation with using a planner with Different Velocity   Case1: 20000mm/s Case2: 15000m/s   Geometry The geometry is been imported ,they are two components in the model Cutting Tool and Work piece The stiffness Behaviors of the cutting tool is set to be Rigid  …

Objective: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.   Geometry The geometry is been imported  on the design module and edited in space module the geometry has two components Worm and worm…

Objective:To simulate the rolling operation on a copper workpiece   Geometry The Geometry is been imported and edited in space claim the plate dimension is been changed   Material Properties Copper Alloy NL is used for the Plate  And Structural Steel  is used for roller   Copper Alloy NL  …

Objective : Perform an analysis to simulate the bending of a wire using 3 different types of materials for the wire. Geometry Materials For pipe were are goanna use three different materials Copper Alloy NL Aluminum Alloy NL   Magnesium Alloy NL   Contact Region Contact type: Frictional Co efficient of friction:…

Objective: - Creat 1D elements on the following component with given cross-section and DOF a. Rod element:- with only translational DOF and RBE2 link Cross-Section: BOX- Dimension a= 12 mm                               dimension b=10 mm  …