I attempt to perform numerical simulation of Friction Stir Spot Welding (FSSW) process using finite element method (FE).
I would ask if to consider a quarter of FE model instead of considering a whole model, based on geometric symerty ?
it really depends on your geometry and input source. Of course by using a quarter it will safe you a lot of time yet the actual problem should be well presented.
It depends on the shape of Pin. Also, due to the forward and backward materials flows surround the Pin, I suggest to consider a whole model. If you use ABAQUS or COMSOL Multi Physics, you will achieve reliable results.
Depends on tool geometry. Although it saves a lot of time making that assumption , always try to consider full geometry. consider finer mesh at tool plunging spot and coarser outside, which will save time . Sometimes results like material flow is difficult to read from your assumption. Alternatively you can consider 2D modelling also to save time.
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