Small pivot terms in calculation
Small pivot terms in calculation
(OP)
Hello,
I try to make an analysis on a small flat thing (extremely rigid compared to the glue) glued on a glass, which is represented as follows.
I apply a force F at a node N, which is connected (by BEAM4 elements) to each node of one surface of the glue. This surface is represented by SHELL43 elements. The glue depth is made of SOLID45 elements. All DOF's of the opposite surface of the glue are fixed.
When I launch the solver, I obtain 1834 small equation pivot terms.
What is wrong in my model ? May I combine BEAM4, SHELL43 and SOLID45 elements ? Aren't the constraints transmitted from one element type to the other ?
Thanks a lot for your answer,
Sev
CAD Engineer in Automotive
I try to make an analysis on a small flat thing (extremely rigid compared to the glue) glued on a glass, which is represented as follows.
I apply a force F at a node N, which is connected (by BEAM4 elements) to each node of one surface of the glue. This surface is represented by SHELL43 elements. The glue depth is made of SOLID45 elements. All DOF's of the opposite surface of the glue are fixed.
When I launch the solver, I obtain 1834 small equation pivot terms.
What is wrong in my model ? May I combine BEAM4, SHELL43 and SOLID45 elements ? Aren't the constraints transmitted from one element type to the other ?
Thanks a lot for your answer,
Sev
CAD Engineer in Automotive





RE: Small pivot terms in calculation
-- drej --
RE: Small pivot terms in calculation
Because I need rotation DOFs, I changed my element types, removing shells and replacing solid45 elements by solid73, which also support rotation. I am now trying to check my model, compared to physical reality, because results seem strange.
Anyway, thanks again for your answer and hope to see you soon in this forum.
Sev
RE: Small pivot terms in calculation
Preprocessor > Coupling/Ceqn > Constraint Eqn
Best of luck,
-- drej --