Week 6 - Creating connection for Rear door

AIM

Apply different types of 1D connection on the side door FE model.

OBJECTIVE

The side door model is given for the connections using different types of 1D connections whichever suitable and makes the proper connections and attaches the FE model to give a model for the simulation process.

PROCEDURE

1. import the geometry.
   
2. For each surface create a PID and name them as below.
3. we need to create a bolt connection for hinge supports.Firstly we need to go to points>on COG and by using loop option select the surface to create a point.
   
4. once the point is created we need to convert the pont connection to bolt connection.
5. Once we are done go to connection selection and select the bolt connection
6. Similarly do for other holes displayed.
   
7. under Mesh>perimeter>feature2curve>with selection path select two end of mirror and give a middle click followed by select a PID.
   
8. use convert to change the curve to spotline as below
9. 
10. use connection manager and select the spotline to convert it to CBush.select P1 as mirror and P2 by selcting outerbody.keep S as 20. for selcting the P1 and P2 use shift+F1 key.
11. under FE type select RBE3-CBUSH-RBE3 followed by serach distance 20mm,Psold ID and click shift+?. create new PID CBUSH and double click on it.
12. Click apply and realise.Apply these similar steps on all four sides of mirror on either side.
13. under Nastran > Elements> multinode RBE2 selection,select the area of the door handles and create multinode RBE2 as displayed below
14. create twonode RBE2 for the two multinode RBE2 connections by selcting both of them.
15. by selecting CONM1, we need to add some mass(10kg) on the this connection as below
16. for few areas spot weld need to done. for this RBE3-Hexa-RBE3 connection need to be created.
17. for the below model, for the quad of 4 nodes is selected to provide a 3d point and its created. the 3d point is converted to spot weild point.this spot weld point need to be converted to RBE3-Hexa-RBE3 in the program to make it spot weld connection.
18. 
19. for all the similar connections, same procedures need to be followed and all these steps have been applied in the attached FE model.

RESULTS AND CONCLUSION

The side door has an important aspect of connection in the vehicle body they are connected with several rigid elements, spot weld, and Bush elements. To deploy the proper connection they are input with exact values and the group of RBE2 elements set is created to determine them easily and this challenge is also overcome with other elements such as spots weld, handles CONMi mass, bolt, and RBE3 Hexa.