Week 3 Verification of Weld Joints
AIM : Simulate three different types of welding using three different weld materials
Case 1. Stainless Steel: In this case, the material of the plates must also be the same. Use Stainless steel for both weldments and plates. No need to add flux to the weldments.
Case 2. Aluminium Alloy:The material to be chosen for this case is Aluminium alloy(high strength, wrought). [Plate material to be used is stainless steel]
Case 3.Bronze: In order to simulate "Brazing", you should be using bronze as the weld material. Assign Stainless Steel to both plates and Copper to the "Ribs".
Run the simulation for a load of 15000N that is to be applied at the rectangular hole in the small plate( Same as in the video).
For each case, find out the Directional Deformation and equivalent strain experienced by the setup. Identify the weld joint that experiences the highest equivalent stress in each case and compare the results for all three cases.
PROCEDURE :
Import Model and open in Space Claim to check if there is any defect in the model.
Then select the material for Case 1 as Stainless Steel from the material library. For assigning the material to each part select every part from the geometry drop down list and select the material to Stainless Steel.
Now go to the Contacts list and select Rename based on definition from the right click options. For Meshing select the plates and change the sizing of the elements by selecting sizing option and make element size as 7mm.
In Analysis settings provide different criterias as under :
Select the fixed support and select the base plate holes inner surface to be constrained.
For force applied select bottom Plate rectuangular hole and apply the load of 15000 N in downward direction (in this case Y-Direction).
Then run the simution. These are the results for various cases :
Case 1 :
Total Deformation :
Total Stress :
Total Stress on Weldements :
Total Strain:
Case 2 :
Total Deformation :
Total Stress :
Total Stress on Weldements :
Total Strain:
Case 3:
Total Deformation :
Total Stress :
Total Stress on Weldements :
Total Strain:
| Case 1 | Case 2 | Case 3 | |
| Equivalent Deformation | 0.192 mm | 0.20 mm | 0.21 mm |
| Equivalent Stress | 238.54 MPa | 283.15 MPa | 290.57 MPa |
| Equivalent Stress on welds | 188.56 MPa | 87.86 MPa | 141.11 MPa |
| Equivalent Strain | 0.0014 | 0.0015 | 0.0015 |
Conclusion :
Deformation : The defromation in all three cases are equivalent. Around 0.20 mm on application of 15000 N load on the smaller plate.
Stress : Maximum Stress is developed in case 3 where brazing of brass material is used on stainless steel plates with copper ribs.
Stress on Weldements : Maximum Stress on weldements is developed in case 1 where there is stainless steel weld material is used over Stainless steel plates with ribs.