Solver problem numerical singularity when tying surfaces together
Solver problem numerical singularity when tying surfaces together
(OP)
one face of a part instance meshed with S8R5(8 node doubly curved thin shell, reduced integration, 5 dof per node) is tied(tie surface) to a face of a part meshed with C3D8R elements.
During the calculation, i have this warning :
SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE
RAIDISSEUR-1.24587 D.O.F. 6 RATIO = 3.21587E+12.
(Raidisseur is the part meshed with S8R5)
How should i resolve this problem? should i use S8R6?
in fact, the results i m getting are a little strange ...is this non accuracy of results due to the singularity?
thank u
During the calculation, i have this warning :
SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE
RAIDISSEUR-1.24587 D.O.F. 6 RATIO = 3.21587E+12.
(Raidisseur is the part meshed with S8R5)
How should i resolve this problem? should i use S8R6?
in fact, the results i m getting are a little strange ...is this non accuracy of results due to the singularity?
thank u
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RE: Solver problem numerical singularity when tying surfaces together
Martin
Martin Stokes CEng MIMechE
RE: Solver problem numerical singularity when tying surfaces together
When i changed the shell elements to S8R6 (6 degrees of freedom for the shell), i dont have this warning anymore.
Do u advice me to use shell to solid coupling?
RE: Solver problem numerical singularity when tying surfaces together
Give it a try and compare the two for stress/displacement continuity across the interface.
Martin
Martin Stokes CEng MIMechE