[Kratos] Problems SolidMechanicsApplication

Stefano Zaghi zstefano en cimne.upc.edu
Jue Jun 11 14:10:26 CEST 2015


 

Dear Andreas, 

 the problem is that you are calling the structural solver multiple
times at the same time step. 

Probably the Solver, the Strategy or the Scheme are doing something
wrong and for this reason the result is not correct. 

Regards, 

Stefano Zaghi 

> Dear colleagues, 
> 
> I still have some problems with the solid mechanics application. The first one is that the eight node hexaeder elemenent is still not working correctly when using it with the large displacement element. 
> 
> The second one is also a problem when using the large displacement element with tetrahedra. We are performing a testcase for a co-simulation where in each time step the structure gets a constant load from a dummy fluid. For coupling an Aitken iteration is used. This should converge in the second step for this configuration but it does not and the displacement is decreasing during the iterations. We found out that this has something to do with the restart Solve() function but we are not sure. When using the small displacement element everything works. 
> 
> Probably one can help us with those problems. 
> 
> Thank you. 
> 
> Regards
> 
> Andreas Mini

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