I make nonlinear analysis with touched contact. My model made by 3d shell elements on Marc Mentat. I have force on shell body which bends and have contact with other shell body. My contact is between two deformable shell with two shell bodies which are parallel.
I conduct nonlinear analysis but get unexpected deformation. When I look the results deformed shape is initial shape( undeformed shape ), orjinal shape is deformed shape but is opposite direction to force direction.
When I conduct analysis without contact deformation is like expected. I don't know what is reason for this unexpected deformation.
Two picture shows result and force direction which is applied. Thank you for your suggestions.
It's quite hard to tell what's going on in the model without taking a look at it. If you send the .mud file, I can take a look and see the cause of the problem. Also, let me know the version of Marc/Mentat you are using.
@Joe Satkunananthan hello thank you for your feedback. I exported model from hypermesh. Maybe I didn't change the user profile in hypermesh into nastran. I think that caused the problem.