Coupling ref nodes to solids in Abaqus
Coupling ref nodes to solids in Abaqus
(OP)
Hi,
I'm a little new to abaqus and having trouble with the following:
I've created a beam in C3D8I elements which I want to load in pure bending,
therefore, I have created 2 ref nodes at both ends. I have coupled the ref
nodes to the end surfaces of the beam using Coupling constraint. When I
apply a rotation to the ref nodes it does not transfer the rotation to the
beams surfaces, and the Riks analysis terminates. Now I'am aware this is wrong since Solids do not have
rotational DOF's, but I have not found another method to accomplisch what
I'm trying to do. Any suggestions?
I'm a little new to abaqus and having trouble with the following:
I've created a beam in C3D8I elements which I want to load in pure bending,
therefore, I have created 2 ref nodes at both ends. I have coupled the ref
nodes to the end surfaces of the beam using Coupling constraint. When I
apply a rotation to the ref nodes it does not transfer the rotation to the
beams surfaces, and the Riks analysis terminates. Now I'am aware this is wrong since Solids do not have
rotational DOF's, but I have not found another method to accomplisch what
I'm trying to do. Any suggestions?





RE: Coupling ref nodes to solids in Abaqus
RE: Coupling ref nodes to solids in Abaqus
http://www.eng-tips.com/viewthread.cfm?qid=334975
I have used the same approach, but the rotation of the ref node still seems to not be coupled to the surface. As abaqus return the following error:
RE: Coupling ref nodes to solids in Abaqus
RE: Coupling ref nodes to solids in Abaqus
RE: Coupling ref nodes to solids in Abaqus
And in the other thread it wasn't mentioned that it worked - it was just asked.
RE: Coupling ref nodes to solids in Abaqus
Also, the reference node you created is probably left unconstrained in the translation DOFs. Have you checked the warning/error messages in the log (.dat/.msg) files?
*********************************************************
Are you new to this forum? If so, please read these FAQs:
http://www.eng-tips.com/faqs.cfm?fid=376
http://www.eng-tips.com/faqs.cfm?fid=1083