Week - 1 - Consistency of Units

  Objective:- The objective of this assignment is to use mass scaling to reduce the runtime of a model and ensure the stability of mass scaling with mas scaling hard limit of 8% . Procedure:- Case1 :- W/O mass scaling the dt value is observed to be 4.40e-05 and the corresponding total clock time is 64 hrs 19 mins. CASE…

OBJECTIVE: To perform a head impact simulation considering three cases of impact and get the values for the HIC and compare the three results. CASE 1: Impact between a simple head and rigid wall. CASE 2:  Impact between child head foam and rigid wall. CASE 3: Impact between child head foam and car hood. INTRODUCTION:…

Objective:-To create a block of 10mm X 10mm X 10mm and perform tensile test by applying appropriate boundary conditions using different ELFORM values and compare the results and plot the values for stretch ratio.Procedure :- In this assignment, we need to create a solid block to which later all the other model setup for…

Objective:- To perform spotwelds using beam and solid element for the given assembly of parts and run a crash test. Procedure:- For this assignment, we need to create beam and solid element welds and connect the two surfaces given. So, considering model setup for test with beam elements. Part Definition:- To define the…

 Objective:- To simulate a crash test for the given meshed crash box. Also get the out put plots for the energies with 1.2 mm and 1.5 thickness for the elements. Procedure:- A model of meshed crash box is provided as follows. [Note:- All the units are converted to gm/mm/ms. ] For this assignment wee need to perform…

Objective:- To perform drop test by creating a complete simulation for the given cell phone and plate models. Considerations :- The height from which the cell phone is dropping is considered to be 1800mm. All the units are in kg/mm/ms. Procedure:- Open the .k file in LS PRE POST by file>open>LS_DYNA keyword File.…

Objective :- To import the starter file(000.rad) check the values for density and young’s modulus and make the necessary changes in the engine file(0001.rad) after getting values from calculation done as per the questions given. To perform 3D tetra mesh and hex mesh on the components. To deploy 1d connections on the 2…

Objective:- Use the given equation and solve for implicit as well as explicit methods with tolerance of 0.001. Procedure:- Implicit method- This type of analysis is used in static analysis. In this method result for next step is calculated. This method considers equilibrium of the forces i.e. it will make sur ethe…

Objective:- To understand the importance of unit consistancy while dealing with LS Dyna as it does not have default units system. Secondly to convert all the given SI units to the units given with proper calulation explaination. Procedure:- Unit consistency is an important part of dyna as the software does not have it…

Objective :- The objective for this assignment is to- Get a refined geometry by checking for any free edges on the geometry and fixing it. Extract Mid surface from the parent surface. Clean the mid surfaced geometry and ignore the holes less than 5mm. Deploy shell mesh on the mid surface of the element target length of…

Aim:- To Perform Volume Meshing and deploy connections on  an automotive rear suspension system. CAD Model:-                 Procedure:- Geometric checks :-      Geometric check is one of the key step to perform before performing any other steps. This will identify the condition of the imported model i.e. cracks between…

Aim:- To perform geometric clean up and extract mid surface for the Instrument panel ( IP).To assign PIDS to components according to thickness and also perform 2D meshing on the mid surface extracted. Imported CAD model:-           Procedure:- Import the .ansa file and perform…

AIM:- To perform morphing on the given models . Application of morphing in various industries:- Morphing can be used to modify existing designs, link with optimization, or create new concepts for future studies. The application of morphing can be found for all disciplines: Crash, NVH, Durability, CFD, etc. Morphing parameters…

Aim:- To deploy connections on the rear car door FEA model using different types of connecting elements. CAD Model:-                                                                                      …

Aim:- To perform geometry check and fix the errors. To Perform shell tria mesh on the surface with the required element quality criteria. To perform tetra volume mesh on the surface and check for quality. Quality criteria:- For shell tria elements- Minimum length- 1 units Maximum Length - 5 units. Target Element Size-…

Aim:- to check the geometry for errors and fix the errors. To mesh the geometry with trias with the given quality criteria and check the elements. To generate tetra volume mesh on the geometry as per the given criteria for tetra element and check the elements for tet collapse. Quality Criteria:- For tria elements Min length=…

Time Taken :- Model 1-->  8hrs. Model 2--> 4 hours.

Aim:- To import and check the geometry for errors and perform geometry cleanup. To get mid surface of the CAD geometry using mid surfacing techniques. To assign PID and thickness to the mid surfaces. Perform shell meshing on the mid surface with given quality criteria. Quality Criteria:- S.No  Quality Criteria …

Aim:-  To perform geometry cleanup on the given hood components. To generate mid surface and assign property to the surface. To set the quality criteria for the shell elements and generate shell elements on the midsurface with proper mesh flow.  Element Criteria:- S.No  Quality Criteria  Value …

Objective:- To mesh the given CAD model of rear wheel holder of a car with 2D shell elements. To check the elements for the given quality criteria. To assign thickness to the fea model. CAD Model Of Rear Wheel Holder :-                   Description Of the Model:-…

Objective:- To mesh the side door of car with given criteria and assign thickness to the model. Element quality criteria:- S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 6 Units 7 Min angle Quad 45 8 Max angle…

 Objective:- To mesh the given geometry with the given element criteria and create connectors, and attach parts of the model. Element criteria:- S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units…

Objective:- To create a tetra mesh for the housing component with given quality criteria. Tetra mesh method:-  Quick tetra mesh/ Volume mesh. Quality criteria for tetra mesh elements.:-  Min Element Size- 2units Max Element Size- 7 units. Target Element Size- 5 units. Tet collapse- 0.15.   Procedure:-…

  Challenge 6 - Follow the  quality criteria, mesh the component  and assign thickness.  Objective:- To create mid surface and mesh the given component by following the quality criteria given and assign thickness to the mid surface.  Import the geomerty. After importing it, we can observe…

Objective- To Mesh the Given component with the Size of 5 Units. Create 1D elements on the following component with given cross-section and DOF. Procedure-  Importing IGES File:  To import the iges file go to File menu-->Import-->select iges-->choose the file and click on import.      …