Project - 2 - Meshing on the suspension Assembly
Note : Detailed report with images are attached as A PDF format Kindly reffer the same Date – 21- 08-2022
PROJECT 2 – REPORT
Report Submitted by YASHVANTH KUMAR S K
AIM:-
Mesh the given rear suspension accordingly with 2D & Volume meshing as per the given quality criteria. Connections to be deployed for the model. Replicate the model symmetrically after all the meshing and connections.
OBJECTIVE:
· Geometry Clean-up.
· Mid surface extraction & 2D meshing.
· Volume Meshing.
· Bolt & Seam Weld Connection.
· Symmetrical Replication.
QUALITY CRITERIA:
Procedure:-
1. Import the given model to ANSA. Set PID for all component and Clean up the model and check for geometrical errors.
2. we have to check the model individually. Because in this model some parts are very close to each other so ANSA may not be able to identify the error properly.
3. In this way, we have to check of each and every component in model.
4. If you find any error, fix that by AUTO FIX option or fix it manually.
5. After fixing everything, change the length of each and every component to it TARGET elements length. It will help to place the node at interval of target length that is 4/ 6.5 based on QC.
6. In this model maximum components are of non-uniform thickness and thickness more than 5mm. So for this type of components, we have to do VOLUME mesh.
7. For Volume mesh, first we have to do the surface mesh using TRIAS & ORTHO TRIAS and the converting those surface mesh to Volume mesh.
8. We will prefer ORTHO TRIAS for curve surfaces as it will capture the feature more accurately as compared to normal TRIAS.
9. And NORMAL TRIAS for straight surfaces.
And fix the quality issues using reconstruct, fix quality and appropriate method.
10. Now set the QUALITY CRITERIA & MESH PARAMETER for volume mesh.
11. And repeat the same procedure for crating volume mesh other parts.
12. Once all the components are meshed, deploy connections accordingly.
13. Use RBE2 in NASTRAN deck. Create RBE2 component for each hole separately by Elements->RBE2->Many Nodes
14. 13. Once the complete meshing and deploying connections, the model it to be symmetrically replicated. the steps for replication is as follows;
· Go to the Transform option in the toolbar, select "Copy".
· Select all the elements that are to be replicated as shown in below image and click on the middle mouse.
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· Select the "Mirror 3 points plane" underuse option.
· Select the points as shown in below image and apply and Finish.
· Replicated model is as shown in below image.
LEARNING OUTCOME:-
· Manage 2D and Solid meshing together with different quality criterias.
· 1D CBAR element for Spring.
· Symmetrical replication of components.
· Concept of suspension assembly meshing.
RESULT:-
The given Suspension assembly is meshed using 2D and tetra mesh with the prescribed quality criteria. Connections are deployed as required. The other half of the assembly is reflected symmetrically.
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