@Prof. Bangerth: The upper one where pseudocolor is written, is from VisIt and deal.II. Below as a reference I showed my results from the C++ code. Both simulations are done using Q4 quadrilateral elements. There are no triangular elements here and the meshes are identical. They are intentionally created for comparison.
Here I show a more refined version, maybe you see the solution more clearly: <https://lh3.googleusercontent.com/-MZCnAWEEdhc/WJBisRnhlmI/AAAAAAAAAEs/LijBxIpUmgQJ_tZTX6_XHoIQe-WjBqnHwCLcB/s1600/config_force1.png> <https://lh3.googleusercontent.com/-sxYF_Qo8Gzo/WJBiu0WOp8I/AAAAAAAAAEw/j2bSThlWXGkxwhtVME-4xBEB_ZwoOx3vwCLcB/s1600/config_force2.png> Additionally, I colored the configurational force arrows from the deal.II solution to black, so it becomes more visible. I think I found the last small detail which seemed to be wrong, but am still not 100 % sure. There is something I don't understand completely. Surprisingly, the JxW value in deal.II stays the same value like in my C++ code, although they jacobian matrix differs by a factor of 2. Exactly this factor of 2 was the difference in my prior results. Now as you can see I get identical results in both approaches. I also fixed some other problem, namely the storage of my necessary data for each element separately. Earlier I stored everything in Gauss points only, but the global vector was overwritten since I had now several elements. For a single element it worked like a charm which is why I didn't recognize it directly. Now I am curious, if this is the best way to store data in a vector for large number of elements. I think you have probably some deal.II way of storing data on cells or at least efficiently in a vector using pointer arithmetics. Is the CellStorageData Jean-Paul mentioned what I seek? I really don't want to lose the scalability of my approach since it should be applicable to large problems also. Kind regards, S. A. Mohseni -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
