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CrackInterface Command

This command has been deprecated. You should set interfacial properties on a crack by using the (lawid) parameter in the NewCrack command instead.

The CrackInterface command assigns custom interface parameters to the current crack:

CrackInterface (Dt),(Dnt),<(Dnc)>

where (Dt), (Dnt),and (Dnc) will create and use a linear imperfect interface contact law for that crack.

In brief, you use the ContactCracks command to select default contact properties for all cracks in a simulation. If you want some cracks to have linear interface parameters, you can use a deprecated CrackInterface command sometime after starting the crack with a NewCrack command (but using the (lawid) parameter in the NewCrack command is preferred).

Notes

  1. When an analysis has imperfect interface, you can track total interface energy using the global archiving methods. In an elastic analysis, the total strain energy is the sum of the strain energy and the interface energy.
  2. The CrackInterface command is only allowed for MPM analyses.