Dear all,
Has anybody encountered convergence issues when using *KINEMATIC COUPLING?
Here's my problem:
I am doing a nonlinear (Material only, *PLASTIC) quasi-static analysis on a engine cradle.
The model is made of S4 and S3 elements.
Loads are applied remotely (at the bushing mounts) and transferred onto the cradle using *KINEMATIC COUPLING (DOF 1 thru 6).
The analysis has some converging issues right from the start (does not complete the first time step). Keeping all parameters constant, I changed *KINEMATIC at one location and replaced it with C3DX elements. The simulations seemed to be more stable, but still fails to converge after t step not equal to zero.
Any comments?
Can this be load transfer be modeled using *EQUATION instead?
Your help is much appreciated.
Thank you,
Sacheen
Graduate Student
McGill University
