Dear David,
Your program seems to me correct. Are you sure that the Newton algorithm
converged ?
A standard value for the penalty parameter is E/h where E is Young's
modulus and h the mesh size. Is you penalty parameter of this order ?
Best regards,
Yves
Le 17/01/2022 à 19:03, David Danan a écrit :
Dear Getfem users,
i wanted to try the add_penalized_contact_with_rigid_obstacle_brick
method a while ago and the results seems consistent with the other
methods i had used so far, therefore i was satisfied.
However, on my test case, i found out that the contact condition seems
to be ignored for some reason.
I was able to reproduce the issue using an already existing mesh in
Getfem and the test example demo_static_contact.py file, please find
enclosed the python script associated.
If i use enforceContactWith="Penalization" or
enforceContactWith="Multipliers" for E=1, everything is ok and the
solutions exported are "roughly" the same
However, for E=1e6, while the solution obtained by using multipliers
gives relatively reasonable results, that's not the case for the
penalization (see picture enclosed).
I tried to increase the penalization coefficient but it hardly had any
impact on the solution.
Did i miss something?
Thank you in advance.
Kind regards,
David.
