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Mesh Mating between two solids

Experimenter
Experimenter

Hi all,

 

    I am new to NX-Nastran, trying to mate mesh between two solids

    What type of mesh connection to be provided to get coincidence between the nodes of two solids

    What type of mesh connection to be provided to get friction contact between the nodes of two solids

   

Regards,

Naveen

1 REPLY

Re: Mesh Mating between two solids

Siemens Phenom Siemens Phenom
Siemens Phenom

There are 3 mesh mating options:

  1. Glue Coincident: This will force the solid mesh to be continuous between adjacent volumes. The nodes on the mesh mating face are shared by elements in both volumes
  2. Free Coincident: This will force the mesh pattern to be the same on both volumes, but the meshes will not be connected. There will be duplicate nodes on the mesh mating face.
  3. Glue Non-Coincident: This does not enforce any mesh continuity across the mesh mating face. The solid meshes will not be connected and the nodes will not be coincident. A layer of rigid elements will be added to tie the two non-coincident meshes together.

 

Glue coincident should be used when you want a continuous mesh across the volumes.

 

Free coincident can be used if you want to apply a glue or contact boundary condition and want the mesh patterns to be identical. Note that coincident meshes are not required for either glue or contact.

 

Glue Non-Coincident: this is an old capability that was implemented prior to glue or tied contact being commonly available as options in solvers. I wouldn't recommend ever using it. Adding glue in the solver results in a much better continuity between the meshes and provides better results reporting for pressures and tractions.