XANSYS Message: 92820 [Go back to message list] [bookmark on del.icio.us]
No rating yet Subject: Re: [STRUC] Force Distributed MPCs cause High Stress in Author: Krishna Raichur Date: 2008-04-11 16:24:38Charles,
If you are adding a point mass, a rigid constraint may be better than force-distributed. You might want to try rigid constraint (Keyopt(4)=2).
Regards, Krishna ------------------------------------------ Krishna S. Raichur SimuTech Group - Chicago kraichur_at_simutechgroup.com
________________________________________ From: xansys-bounces_at_xansys.org [xansys-bounces_at_xansys.org] On Behalf Of CharlesABhaskaran_at_eaton.com [CharlesABhaskaran_at_eaton.com] Sent: Friday, April 11, 2008 10:36 AM To: xansys_at_xansys.org Subject: RE: [Xansys] [STRUC] Force Distributed MPCs cause High Stress in ANSYS 11
I see very high stress at MPC contact and surrounding areas in ANSYS 11 not in WB11.
The interesting thing is WB created this MPC contact when adding masses (deformable option is default). Don't see high stress in WB, but after porting the model into ANSYS, the high stress problems comes in. This is a force distributed and defaults are follows Conta174 Keyopt(4)=MPC, Keyopt (2)=1 normal to target surface. Targe170 Keyopt(2)=1 user definition, K(4)=X, Y and Z checked K(5) is autoconstraint. Have been using MPC for a while, nothing didn't jump at me to explain the high stresses at ANSYS 11.
Has anyone noticed high stress at MPCcontact in ANSYS 11 ?
Charles Bhaskaran EATON LLC, Aerospace Divn Grand Rapids, MI, USA (616) 447 8179