Week - 3 Drop test Challenge

AIM: To model an aeroplane engine by inputing nad assigning required parameters and create a simulation of a bird striking the blades of the engine model.   PROCEDURE: The model bird_strike is imported into the lsdyna solver  The model is seperated into four seperate models such as hub, blade, casing and the…

AIM: To create spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies using LSDYNA. PROCEDURE: REVOLUTE JOINT: A revolute joint is a one-degree of freedom used frequently in mechanisms and machines.The joint constrains the motion of two bodies to pure rotation…

AIM: To calculate the mooney rivlin and ogden material constants and compare the both using stress strain data for the material card induced dogbone specimen for 100 percent strain.   INTRODUCTION: MOONEY RIVLIN: The strain energy density function for an incompressible Mooney–Rivlin material is…

AIM: To extract data from the given material curve image using digitizer and model a new material from the data extracted and to conduct a tensile test analysis inorder to check whether the obtained data's are correct through graphs.   PROCEDURE: EXTRACTION OF DATA: The values of engineering stress and strain are…

AIM: To use mass scaling to reduvce the run time of the model and ensure the stability of mass scaling. To ensure that the hard limit on mass scaling is does not exceed 8%. To use both implicit and explicit solutions and check its effects.   PROCEDURE: Mass-scaling refers to a technique whereby nonphysical mass is…

AIM: To create a simulation between various models and claluate the HIC value under various below mentioned cases. 1.) between a simple head form and a rigid wall 2.) between a standard developed pedestrian headform and a rigid wall. 3.) atlast between the pedestrian headform and the meshed hood model.   PROCEDURE…

AIM: To create a block with the above mentioned dimension and use the ogden material properties into it , thus observing the behaviour of it under various element formulations given above. Create appropriate boundary conditions to provide tensile motion to the cube. Plot the graph between normal stress and stretch ratio.…

 AIM:  To obtain the axial and shear force by comparing the spotwelds between beam and solid sections.   PROCEDURE: BEAM SPOTWELD SECTION: Import the model .k file  Create the section card for the shell parts and assign the thickness as 2 mm and with elform 16. Create the material card for both the…

AIM: To run a simulation in lsdyna for different thickness assigned to the crash box and compare the results. PROCEDURE: The first step is to build the model using various keywords in form the keyword manager. Firstly the section type is defined to the software by creating it with various thicknesses of 1.2 and 1.5. Then…

  AIM: To run a error free termination and to perform the simulation for the given model when it impacts the ground, by analyzing the stress.   Procedure: Constrain the ground for impact using the boundary-> spc and lock all the degrees of freedom for the section Set free the translational motion in z direction…

Aim: To solve the given eqn using both implicit and explicit methods.   Procedure: 1.) Explicit Analysis The explicit analysis is a kind of analysis in which the value of a a function at the required time step does not relies on the previous timesteps. Consider the force in the bar is a nonlinear function of the displacement:…

AIM:  To enable connections between the variours components of the suspension assembly access door.   PROCEDURE: Import the model back door connections into nastran tab. Check for the topological errors through the checks manager-> geometry. Select the errors and use the auto fix option to fix the errors.…

Aim: To extract the middle surface and mesh the given component with ansa 19.1.5 as per the given quality criteria, by assigning the thickness. Procedure: Import the model ipsubstrate.igs into the ansa topo tab check for the topological errors, red lines indicates free edges, cyan lines indicates triple cons  use the geom…

Aim: To morph the given the model component.igs using the various morphing techniques.   Procedure: Import the model component.igs into ansa. Check for topological errors using the checks managers. If the model is free of errors the proceed with morphing by selecting the morphing tab. The advantage in morphing is…

AIM:  To enable 1d connections between the variours components of the rear passenger access door.   PROCEDURE: Import the model back door connections into nastran tab. Check for the topological errors through the checks manager-> geometry. Select the errors and use the auto fix option to fix the errors. In case of unfixed…

Aim: To extract the middle surface of the component and mesh it as per the quality criteria provided.   Procedure: Import the model intake manifold into ansa topo tab. Check for the topological errors through the checks manager-> geometry. Select the errors and use the auto fix option to fix the errors. In case…

AIM:  To tetra mesh the given component as per the provided quality criteria   PROCEDURE: Import the model rearmirror.igs into ansa topo tab. it consists of four major components they are: mirror, cap, mirror glass & holder. NOTE: As all the above shown components are symmetrical, one part of the section…

Aim: To extract the middle surface of the component and mesh it as per the quality criteria provided.   Procedure: Import both models into ansa topo tab. Check for the topological errors through the checks manager-> geometry. Select the errors and use the auto fix option to fix the errors. In case of unfixed errors,…

Aim: To extract the middle surface of the component and mesh it as per the quality criteria provided.   Procedure: Import the model bottlecap.IGS into ansa topo tab. Check for the topological errors through the checks manager-> geometry. Select the errors and use the auto fix option to fix the errors. In case of…

Aim: To mesh the given component with ansa 19.1.5 as per the provided quality criteria Procedure: Import the model hood.step.asna as the model is symmetrical it can be divided into two equals halves and the folowing procedure can be carried out. check for the topological errors, red lines indicates free edges, cyan lines…

Objective: To create mesh for the given component and assign thickness.   Procedure: The complexity of the entire geometry is reduced by spliting the entire components is split into various components. Select 2D panel-> surface edit -> trim with planes-> select the surfs-> select the split points. The surface gets splited…

Objective: To Create connector and Attach the various parts of the given model. Procedure: import the model using the import option in the optistruct window. check for the component's topological errors and retify them.  extract the middle surface of the component using the midsurface option. mesh the components using…

Objective: Create a tetra mesh for the given models within the specified element size. Procedure: Tetra mesh for the housing: Step1: Open hypermesh window -> radioss Step2: import the downloaded model. Step3: the housing model consists of two components the hub and the housing cover. Hub: Step 4: delete the solids,…

Objective: To mesh the given component according to the quality criterias. Procedure : General steps: 1. Open the hypermesh window -> select optistruct. 2. Import the entire model by selecting the root file -> click import 3. Go to delete -> solids -> surfs displayed -> delete entity. 4. Go to geom ->…

Objective: to Create 1D elements on a simple parallel bracket component with the given cross-section and DOF\'s. Procedure:  shows the side view in order to shows the extraced mid surface. General steps: step 1: open hypermesh window and select the optistruct option from the user profiles list. step2: delete the solids…