Contact problem
Contact problem
(OP)
Hi,
I'm working on a contact problem on a total knee prosthesys, and I'm starting with a simple preliminar problem: a sphere pressed on a block by a vertical force (both elements are made of steel).
My problem is that there is no contact:the sphere penetrate into the block without any visible deformation,and there is a node (that rappresent the initial contact between the two bodyes)that stay near the initial position.
Someone can tell me whych are the parametres that i can modify to solve this problem?
I don't know if there is only a visualization problem, or if contact wizard can do some problem (now I'm tryng to define contact without using contact wizard).
thanks
I'm working on a contact problem on a total knee prosthesys, and I'm starting with a simple preliminar problem: a sphere pressed on a block by a vertical force (both elements are made of steel).
My problem is that there is no contact:the sphere penetrate into the block without any visible deformation,and there is a node (that rappresent the initial contact between the two bodyes)that stay near the initial position.
Someone can tell me whych are the parametres that i can modify to solve this problem?
I don't know if there is only a visualization problem, or if contact wizard can do some problem (now I'm tryng to define contact without using contact wizard).
thanks





RE: Contact problem
There is one example contact problem in ANSYS verfication manual similar to your problem.The results are verified with mechanical engineering design by shigley.
Few simple tips are,
Use surface to surface contact elements with default contact parameters.
Use style->displacement sacling->1
Use finer mesh around the contact regions.
We need few more error or warning information from you inorder to give further sugggestions.
Logesh.E
RE: Contact problem
I am using default real constraints for contact pair.
Does any body have any idea what does this Warning mean?
RE: Contact problem
Contact and target elements must have the same realconstants!
esel,s,real,,?
Also looking for the elementnormals of the contact elements!
esel,s,real,,?
/psym,esys,1
They must be opposed!
RE: Contact problem
RE: Contact problem
Max