[Getfem-users] Stress tensor / normal stress on surface

[Stephan Gekle]

Dear all,

I am using the 'isotropic linearized elasticity brick'.
Is there an easy way to obtain the local stress tensor sigma throughout 
the material? And similarly the tangential / normal stress on the surface?
Or is it necessary to compute that manually using the derivatives of the 
displacements... if so, has anybody a piece of code at hand to do this?

Thanks a lot for any help,

  Stephan