Re: [Getfem-users] divergence of stress tensor

[Yves Renard]

Dear Phuoc,

There is no specific function for that, but you have access to the Hessian ('Hess_u' for the variable u), so you have to give the _expression_ of the divergence of the stress tensor with respect to the Hessian of the variable.

Additionally, for the jumps on normal derivatives on element interfaces see http://getfem.org/userdoc/gasm_high.html#evaluating-discontinuities-across-inter-element-edges-faces

Best regards,

Yves


Le 16/01/2018 à 06:08, Huu Phuoc BUI a écrit :

Dear getfem users,

I'd like to compute the divergence of stress tensor of a linear elasticity problem which is necessary in an a posteriori error estimate.

Do you have any idea how to compute it using generic assembly of GetFEM? 

Thank you

​ in advance for your support.​

Best regards,

Phuoc

-- 

  Yves Renard (address@hidden)       tel : (33) 04.72.43.87.08
  Pole de Mathematiques, INSA-Lyon             fax : (33) 04.72.43.85.29
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