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1st order to 2nd order conversion

Hi Dear,

I have one doubt in my mind.

Case:

i have some bracket meshed with tet4 element. i have constrained the holes using the rigid element and i applied the load at the some other hole location using rigid element.

Later i was converted the mesh into tet10 element. But my rigid elements are unable to update/connect the mid side nodes.

Doubt:

What will happen if i run the model, in that rigid element were not connected with mid side nodes. It will affect the result.

Thanks and regards.
Thanga Pandiyan.