getdp linear elasticity -- modal analysis (example wanted)
I think I have now understood the format of the .pre file. But I'm still having problems with 3D modal analysis (eigenvalue problem K - omega^2*M).
- I haven't been able to find a suitable example for modal analysis except except for the magnetometer and that has an additional term (I am assuming due to piezoelectric effects?) that isn't applicable to my case.
- I am using a file Lib_Elasticity_u.pro. I must have obtained this file from somewhere on onelab.info but I don't know exactly from where. However in this file there is a term "Integral { DtDtDof [ -rho[] * Dof{ux} , {ux} ];", whereas in the magnetometer example the minus sign is missing.
Is there someone who can shed some light on this or point me to an appropriate example?
PS: I'm sorry, if I sound confused. It is because I really am.
I am attaching the mentioned file: Lib_Elasticity_u.pro