Numerical singularity issue
Numerical singularity issue
(OP)
Hi,
I encouter a problem.
In msg file, it says:
SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE 191 D.O.F. 3 RATIO = 6.85800E+11
I wonder what can cause such singularity problem and I don't know what is wrong with my UEL code.
Thanks.
I encouter a problem.
In msg file, it says:
SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE 191 D.O.F. 3 RATIO = 6.85800E+11
I wonder what can cause such singularity problem and I don't know what is wrong with my UEL code.
Thanks.





RE: Numerical singularity issue
corus
RE: Numerical singularity issue
So how do we give such boundary condtions:
Five nodes on a circle(2D), these five nodes can only move toward the center of circle--there is only radial displacement and no tangential displacement (no rotation). Suppose that we fix one node, how about other nodes? How to apply BCs?
RE: Numerical singularity issue
corus