On 11/7/25 20:17, 'Weidong Pian' via deal.II User Group wrote:
I’m studying works contributed to deal.II conmunity recently,that is,tutorial
step-44 and “Quasi-Static Finite-Strain Quasi-incompressible Visco-
elasticity”.When I try to extend your program of the latter with automatic
refinement,I encountered an interesting trouble,stucking me for two days.*I
found that if I transfer all the three component of solutions from coarse mesh
to refining mesh directly,then the interpolated solution U seems correct,but
the interpolated solution p and interpolated solution J seems totally
chaotic(as pictures show).This directly results in a NAN in RES_U,RES_P and
RES_J.*I can’t understand how this chaos happens,so I would sincerely
appreciate your help and opinions.
The figure on the top shows solution befor adaptive refinement and
solutiontransfer,that on the bottom shows solution after refinement and
solutiontransfer.I would really appreciate it for any suggestions
Wei-Dong,
I think you need to show us how you transfer the solution. Are you calling one
of the DoFRenumbering functions *after* you interpolate the solution onto the
mesh with SolutionTransfer?
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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