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RefraBund / refrasin

Sintering simulation program developed within the RefraBund project.
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Reimplement Particle Rotation #59

Closed axtimhaus closed 2 months ago

axtimhaus commented 3 months ago

Rotation was removed in #58 due to Jacobian singularity. Current formulation is not feasible.

axtimhaus commented 2 months ago

In state of #67

When using multiple GB nodes, the solution is collapsing to zero shrinkage. This is due to lack of tangential shifting of GB nodes. Small influence (almost zero) of normal shifting on angle displacements prevents solution of angle displacement balance. Only valid solution is than no particle shift at all. Coercing the small derivatives to zero leads to linear dependent columns for angle lambda due to missing tangential displacements.

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axtimhaus commented 2 months ago 

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