some strange phenomena

shape functions, cutting facets, integration schemes, essential boundary conditions

some strange phenomena

Postby ghfang06 » Tue Oct 23, 2007 6:49 pm

Dear everybody here,

Recently I try to use meshfree method to calculate my model. While it is not lucky for me, I encountered many questions. So I post them here and hopefully get some help or instructions from you.

The first question is :
When I used VIB Model to simulate my sample, there are some strange phenomena(Look the attached picture ). That is some nodes in the displacement boundary set run away from the others. I don't know the exact reason, but I guess,perhaps, it is the reason that meshfree method is not stable on the boundary.
P.S. I use RKPM and rect_cubic_spline_window when simulating my sample.
How to deal with this situation when it occurs?

Second question is: Does tahoe support " meshfree_contact_3D_penalty ". I see that tahoe supports " meshfree_contact_2D_penalty ", but it seems there is no " meshfree_contact_3D_penalty " choice.

The last question is: what's the difference between " rect_cubic_spline_window " and " cubic_spline_window "?

Thanks a lot for any help!

Best Regards,

meshfree-nodes.JPG (73.01 KiB) Viewed 2840 times
Junior Member
Posts: 8
Joined: Mon Jan 01, 2007 7:17 pm

Return to meshfree methods

Who is online

Users browsing this forum: No registered users and 1 guest