I am trying to simulate deformation of spinning membrane under gravitational force on Comsol Multiphysics software. The angular velocity of membrane is changing with time. I am getting the error as follows,
Error :
Repeated error test failures. May have reached a singularity.
Time: 0.052225781465306945 s.
Undefined value found.
NaN or Inf found when solving linear system using MUMPS.
Last time step is not converged.
I dont understand the reason behind this error.
Pls help me with this.
Have a look at https://doc.comsol.com/5.4/doc/com.comsol.help.sme/StructuralMechanicsModuleUsersGuide.pdf
See also https://www.researchgate.net/post/How_to_add_a_prescribed_displacement_in_Comsol_Multiphysics_structural_mechanics_plate_2D_time_dependent_study
I think you need to take the angular velocity of membrane as a function of time. Use this equation as boundary conditions.
thank you
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