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Subject: Re: [STRUC] Force Distributed MPCs cause High Stress inANSYS
Author: Charles Bhaskaran
Date: 2008-04-11 16:37:25Thanks Krishna:
Will try Conta 174 Keyopt(4)=2 rigid surface constraint (on nodal
point_normal to target surface) and let you know.
Charles Bhaskaran
EATON LLC, Aerospace Divn
Grand Rapids, MI, USA
(616) 447 8179
-----Original Message-----
From: xansys-bounces_at_xansys.org [mailto:xansys-bounces_at_xansys.org] On
Behalf Of Krishna Raichur
Sent: Friday, April 11, 2008 12:25 PM
To: ANSYS User Discussion List
Subject: RE: [Xansys] [STRUC] Force Distributed MPCs cause High Stress
inANSYS 11
Charles,
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