|Subject:||[Getfem-users] Prescribed Displacement in one direction only (free slip)|
|Date:||Sun, 2 Jul 2017 13:30:26 +0200|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.6.0|
I work with 3D linear elastic problems and I have to prescribed displacements on some boundaries (Dirichlet Conditions)
I use this sample code:
std::vector< bgeot::scalar_type > F( mf_rhs.nb_dof() * 3 );
getfem::interpolation_function( mf_rhs, F,
my_class_function, attribute_id );
getfem::add_Dirichlet_condition_with_multipliers( model, mim, "u",
mf_u, attribute_id, "Dirichlet" );
to add a Dirichlect condition to my region "attribute_id"
The problem is that my_class_function has an operator() that returns a bgeot::base_vector with three coordinates, containing the three prescribed displacements. With this kind of code, I have to prescribed the displacement in the 3 directions
How can I just precribed the displacement in only one direction, and let the others free ?
Thank you in advance for your advices !
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