[Jan]

Hey Jean-Nicolas,

thanks for your response. When using Caribou solvers in the scene independent of the combination the constraints do not work properly. When using the NeoHookeanMaterial of Caribou with EulerImplicitSolver and ShewchukPCGLinearSolver (Preconditioner: SparseLDLSolver) of SOFA it will work for low pressures.
But for now, I’m using the TetrahedronFEMForceField with the SOFA solvers because it seems that it would be the most stable solution with the constraints described above.

Best regards
Jan

[Jan]

Hey Jean-Nicolas,

thank you, that was really helpful. With some parameters, the solution converges but I should make it more stable. I will have a look at the Caribou Plugin!

Best regards
Jan

[Jan]

Hey Jean-Nicolas,

thanks for your help!

I reduced the time steps and now the simulation converges. When choosing a high bulk modulus for the hyperelastic material some elements are distorted, as seen here: https://imgur.com/a/6BIha2H.
The deformation becomes smoother the lower the bulk modulus. Is there a possible way to get the deformation smoother without changing the bulk modulus?

The simulation uses EulerImplicitSolver and ShewchukPCGLinearSolver. The cavity pressure is applied using SurfacePressureConstraint.

Best regards
Jan

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