[deal.II] Re: Remove constraints at some DoF

2023-03-17 Thread 'yy.wayne' via deal.II User Group
Another question relates to singular field that, do we support mixed finite elements (with cg elements and dg elements at different location)? I only see mixed order formulation but not mixed element type in tutorials. 在2023年3月18日星期六 UTC+8 09:45:50 写道: > Hello my friends, > > I'm working on

[deal.II] Remove constraints at some DoF

2023-03-17 Thread 'yy.wayne' via deal.II User Group
Hello my friends, I'm working on problems with singularity fields. Is it possible to remove a constraint line/entry at specific DoF? Say at the edge of a corner in 3d, the two faces intersect at the corner are already interpolate with zero boundary condition. However I want to un-constraint

Re: [deal.II] Averaging derived solution quantities (mises stress)

2023-03-17 Thread Wolfgang Bangerth
Konrad, yes the mesh is quite coarse, but I want to investigate the functionality of how deal.ii outputs stresses and how these stresses are then displayed via for instance paraview. To really see the effects I intentionally use the coarse mesh. So far, I actually do create a (derived)

Re: [deal.II] Averaging derived solution quantities (mises stress)

2023-03-17 Thread Konrad Schneider
there was a small bug in my code I posted above. the following code is running fine. Konrad Schneider schrieb am Freitag, 17. März 2023 um 17:03:18 UTC+1: > Dear Wolfgang, > yes the mesh is quite coarse, but I want to investigate the functionality > of how deal.ii outputs stresses and how

Re: [deal.II] Averaging derived solution quantities (mises stress)

2023-03-17 Thread Konrad Schneider
Dear Wolfgang, yes the mesh is quite coarse, but I want to investigate the functionality of how deal.ii outputs stresses and how these stresses are then displayed via for instance paraview. To really see the effects I intentionally use the coarse mesh. So far, I actually do create a (derived)