interface.node.stress.normal.add
Syntax
- f = interface.node.stress.normal.add(in)
- interface.node.stress.normal.add(in) = f
Get/set the additional normal stress. The normal stress used in the calculation is equal to the penetration × stiffness + additional normal stress. This function can be used to initialize (or pre-stress) the interface normal stress or to counteract the stresses induced by interpenetration.
Returns: f - additional normal stress Accepts: f - additional normal stress Arguments: in - interface node pointer
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