high2011
Structural
- Jan 25, 2011
- 5
Hallo:
I am running a user subroutine in Abaqus on a single tetrahedral element. The three bottom nodes of the tetrahedra are vertically constrained, and a vertical displacement is applied to the top node. The problem is that I have vertical equilibrium only for the first increment. When I introduce a second increment in the simulation I start to have difference between the resultant force on the top node and the bottom (3) nodes.
Have you got any idea about this?
Thanks,
High2011
I am running a user subroutine in Abaqus on a single tetrahedral element. The three bottom nodes of the tetrahedra are vertically constrained, and a vertical displacement is applied to the top node. The problem is that I have vertical equilibrium only for the first increment. When I introduce a second increment in the simulation I start to have difference between the resultant force on the top node and the bottom (3) nodes.
Have you got any idea about this?
Thanks,
High2011