I'm attempting to model a 3D structure with gap between 2 parts.
The model is already done with surface to surface contact between the adjacent parts. In this case there is no gap because the 2 meshs match.
I would to allow a penetration of the 2 parts of 0.2mm before the contact force starts to increase. Is it possible ?
The alternative is to redo a mesh with an effective gap.
Thanks in advance.
I assume that your CAD model includes the 2 mm gap. In this case, these steps should keep that gap between the parts, and the surface to surface contact in MES will not create contact until the two parts move 2 mm toward each other:
- define the surface contact before creating the mesh.
- Under the "3D Mesh Settings > Options", there is an option like "do not match the mesh when not necessary". In other words, surface to surface contact does not require the mesh to match, so the mesher should not try to match them.
- Set the mesh matching method to "Absolute length dimension".
- Set the mesh matching tolerance to something smaller than 2 mm. I hope all of the parts that do need to be bonded together are closer together than the tolerance you enter!
16 years experience with Simulation Mechanical
In fact, I'm using a hand mesh model.
A 2d mesh of the longitudinal section is made and a "copy and rotate" operation is used to create the 3D model.
The mesh completely match between all surfaces in contact.
Thanks for your advice.