Hello everyone,
Just a general doubt, I have seen a lot of papers on welding using Gaussian heat-source to model their welding process. But either it's a plasma arc welding or laser welding, they are using the same gaussian heat source, if we can use the same heat source for both the processes, what would be the difference numerically since almost all the physics are pretty much the same.
Please share your thoughts!
Because laser welding and plasma arc welding have large energy density and relatively small molten pools. Their energy distribution are almost symmetric on the moving direction.
Both of them can be described via Gaussian heat source model.
In comparison, TIG and MIG have large molten pools, which has a longer tail and the energy density is more distributed on this region. In this situation, the Goldak double ellipsoidal heat source model is more suitable since it has more shape parameters to reproduce the actual energy distribution.
The main differnt is the shape of heat sourse model
Conical and Godack model heat sourse model thats you should to use in your simualtion part
Mahmood Hasan Alhafadhi : Conical for laser welding and Goldak for PAW. Right ?
But what about two-dimensional welding simulation, I haven't seen any 2D formulation for the Goldak heat source. Can you please comment on it?
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