|From:||Lesage,Anne Cecile J|
|Subject:||brain anatomy boundary conditions|
|Date:||Thu, 18 Nov 2021 20:36:32 +0000|
To describe a brain geometrical space contrains, I have three meshes part in my python script
meshb and mesh are 3d and meshtf is a fine membrane described by a triangle mesh surface
mesh and meshtf are attached at several places (nodes in common), how do I ensure that the fem takes this boundary condition in account?
To set up that the brain is sliding without friction inside the head, I wrote the following python lines
fbb = meshb.outer_faces() # Boundary of the brain
fbh = meshh.outer_faces() # Boundary of the head
HEAD_BOUND = 1;
BRAIN_BOUND = 2;
# selection of faces for contact condition
md.add_penalized_contact_between_nonmatching_meshes_brick(mim3h, uh, ub, datanamer, HEAD_BOUND, BRAIN_BOUND, 1, lambda1_n)
Is it a good option? How to choose the parameters datanamer and lambda1?
I would like the brain to slide along the whole meshtf. How to define a set of faces that contains the entire triangles mesh?
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