Re: [Getfem-users] 2D nonlinear plane stress

[Yves Renard]

Dear Moritz Jena,

No, unfortunately, plane stress versions of Hyperelastic laws has not been 
implemented yet.

I would not be so difficult, but as to be made. If you need one in particular 
and have the expression, it is no so difficult to describe it with the weak 
form language.

Best regards,

Yves



----- Original Message -----
From: "Moritz Jena" <address@hidden>
To: "getfem-users" <address@hidden>
Sent: Tuesday, January 8, 2019 4:11:48 PM
Subject: [Getfem-users] 2D nonlinear plane stress

Dear GetFEM-Users,

I use the MATLAB-Interface of GetFEM to create a program that 
automatically solves different models of the same problem.

The problem is three-dimensional, but can be reduced by plain stress 
approximation. (to reduce computing time).

I want to define a nonlinear material with the brick

                gf_model_set(model M, 'add nonlinear elasticity brick', 
[...])

For this nonlinear command it is specified in the description, that in 2D 
always plain strain is used.

So my question is: Is there a way to define a nonlinear material with the 
plain stress approximation? Or is it planned to install such an option in 
a future release?

I hope you can help me with my problem.

Best regards,

Moritz Jena