I model a 2D plane stress of a plate with center hole and a separate circle surface that is same location as the hole to simulate a neat-fit contact problem as shown below.
However, from looking the results, it seems like the hole deforms too much, and there is penetration between circle region and the hole edge despite the defined edge-edge contact.
Can someone take a look at my model and let me know what may have gone wrong? Here is the link:my model
Solved! Go to Solution.
Check first the real scale for the deformation. I guess your plot is with "exagerate" scale.
And then the pentartion value. If it is too much you can play with the contact settings
I am not able to open your model:
Opening model file from Femap version 11.10. Temporary file being created: Reading... Unable to open Student Version Model in this version.
But I suggest the following:
And finally check the deformation scale factor, use 1:1, this way you will see real deformation, if penetration exist then it will appear clearly in the screen.
Ok. I supposed that. One must take care about it. The plot is the plot and one can play with scale parameters. The results are the real things. You should check the penetration. Let`s say that if the displacement is 1mm penetration should be 0.0001 or less (or check with other contact parameters and check if the results change a lot. like a mesh converge study). Theoretically penetration is enforced to be 0 but augmented langrage method (I think It is the method used in sol106) gives some penetration (less iterations than forcing 0). It is a comprimise between iterations/results
I think with contact separation. I do not remmeber now but:
- positive: separation
- negative : penetration
But I am not sure. Check it if it has sense. I eman if it is opening you have postive or not