thecadguy
Automotive
- Apr 12, 2012
- 44
Dear All,
I am having issues with NX natran non linear contact (SOL 601). It is a simple model of a plate pushing down on a rubber ring. Everything is meshed with hex's with at least three elements thru the htickness. I am using hyperelastic material properties and surface to suface contact. The rubber ring is fixed on the botton and I have light springs holding the plate above with an enforced displacement in the negative z-direction.
The model converges but the plate still penetrates the surface of the rubber ring. The ring still compreses but bows under and the outside tangent elements penetrate on top. I have tried refining the mesh and slowing down the solution to .01 for 100 iterations. I have played with some of the other stratic settings with no luck.
Anyone have anyother suggestions? This is my first time with hyperelastic material and am wondering if it is just a trial and error thing until it works? I am using Mooney rivlin and was thinking about maybe another such as ogden? Would the material properties affect the contact? Should I be using a shell plate instead of solids, it should not matter?
Thanks,
THECADGUY
I am having issues with NX natran non linear contact (SOL 601). It is a simple model of a plate pushing down on a rubber ring. Everything is meshed with hex's with at least three elements thru the htickness. I am using hyperelastic material properties and surface to suface contact. The rubber ring is fixed on the botton and I have light springs holding the plate above with an enforced displacement in the negative z-direction.
The model converges but the plate still penetrates the surface of the rubber ring. The ring still compreses but bows under and the outside tangent elements penetrate on top. I have tried refining the mesh and slowing down the solution to .01 for 100 iterations. I have played with some of the other stratic settings with no luck.
Anyone have anyother suggestions? This is my first time with hyperelastic material and am wondering if it is just a trial and error thing until it works? I am using Mooney rivlin and was thinking about maybe another such as ogden? Would the material properties affect the contact? Should I be using a shell plate instead of solids, it should not matter?
Thanks,
THECADGUY
