Re: [Getfem-users] manually set deformation beforecompute_tangent_matrix

[Andreykiv, A.]

Hi Nico,

 

    It is possible. You will have to set the displacement vector in the model state object, that you're using with your bricks.

But, you're using Python, right? I use C++, but it must be the same in Python.

For the details, please see the documentation on the model state class.

If you're having problems, I could send you my C++ code that does it.

 

Regards,

                  Andriy

______________________________________________

Andriy Andreykiv
Delft University of Technology
Faculty of Mechanical Engineering
Fundamentals of Microsystems

Mekelweg 2
2628 CD  Delft
The Netherlands
 
E-mail  :  address@hidden
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---

From: address@hidden on behalf of Nico Galoppo
Sent: óÒ 02/01/2008 18:55
To: address@hidden
Subject: [Getfem-users] manually set deformation beforecompute_tangent_matrix

Hi,

Is it possible to set a field on a fem explicitly, such that the
correct state is used when recomputing the tangent matrix?

For example, I would like to set the deformation of the mesh_fem mfu
that was linked to a brick as below:

gf_mesh_fem_set(mfu, 'fem', gf_fem('FEM_PK(3,1)'));
b0 = gfMdBrick('nonlinear elasticity', mim, mfu, 'SaintVenant Kirchhoff');

... setting some constraints in brick b3 ...

Here, I would like to set the deformation of mfu explicitly, to
extract the tangent matrix. Is this possible?

gf_mdstate_set(mds,'compute_tangent_matrix',b3);
gf_mdstate_get(mds,'tangent_matrix')

Thanks!

--nico

--
Nico Galoppo :: http://www.ngaloppo.org

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