How to glue bodies at common faces in Ansys workbench ?? (I cant use form parts option)))

[saimohan35]

Hi,

i have four bodies in contact with common faces. I cant use "form a new part " feature for four parts. i didnt see any option to glue required solids. I am simulating fracture problem. For that, i want to glue three common faces, i dont want to glue fourth common face part. i am attaching screen shot. i think this can be solved by ansys apdl commands. but i am not familiar with apdl commands. So, can any one give idea to glue particular solids with apdl commands in workbench ???

 

[scarules2006]

Hi,
by glue you mean bond? If that is what you mean, you must insert a contact region and define it by selecting the surfaces you want to bond, in contact definition you select "bond".

 

[saimohan35]

No, on three faces I want conformal mesh (common nodes at interface, this can be achieved in ansys apdl by glue). On fourth face i want different nodes at the inerface on each face. If i have a different nodes at fourth interface that faces will move away from each other during deformation of entire body. that is for crack problems. I dont want contacts between solids.
Any idea to do that ???

 

[petb]

Then just save the workbench geometry as *.anf file and import into Mechanical APDL. Perform whatever operation you need to on the geometry and continue to do your analysis in that environment (Mechanical APDL).

/PB

 

[rickfischer51]

If you can produce mapped meshes with coincident nodes on the surfaces you want to glue, you should be able to merge them with a NUMMRG command in a snippet. Make a named selection ( lets say GLUE ) on the surfaces you want to join. Then in your command snippet:

cmsel,s,GLUE
nummrg,node,toler
allsel

Toler is the tolerance applied when it decides which nodes to merge. Default is 1e-4. If the nodes are not quite coincident, specify a larger value. If you mesh size is at or near 1e-4, specify a smaller value.

Rick Fischer
Principal Engineer
Argonne National Laboratory