Periodic Boundary Condition Implementation for few discrete Node or DOF

Shankar Lal Gugulothu

Please login with a confirmed email address before reporting spam

Dear All, I want to apply the Periodic Boundary Conditions on specific Points/Joints/Nodes in the Truss/Beam for different dependent variable say u,v,theta_Z but not on the Boundaries. For 2D TRUSS/BEAM of Structural Mechanics I am not able to see the Periodic Boundary Condition option for Points/Nodes directly(Automatic). I have tried Manually coupling for Periodic Boundary Condition by Pairs (Identity Point Pair) under Definitions node, it gave me a syntax (src2dst) which is a source point existence indicator it is used while applying the point constraint in the at destination point for periodic displacements as follows, src2dst_p1(u)*exp(-1i*kx*a) and src2dst_p1(v)*exp(-1i*kx*a) for both u,v displacement components. Let me know is this the procedure is correct, please suggest me for applying PBC for points in structure. I am attaching figure and mph file for more understanding the problem.



0 Replies Last Post Aug 22, 2024, 12:33 a.m. EDT
COMSOL Moderator

Hello Shankar Lal Gugulothu

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.