VM248 uses interface elements (INTER*) with a cohesive zone material model (TB,CZM) with an exponential material behavior (TBOPT=EXPO). The interface properties are listed as follows:

C1 is given in "MPa" units
C2 is given in "mm" units
C3 is given in "MPa" units

The theory reference for the CZM material model shows that this material is defined with maximum stress (C1 = sigma_max), normal separation (C2 = delta_n), and shear separation (C3 = delta_t). What are the correct units for C3?

C3 should be in units of length. This was reported in documentation defect 61955 and will be corrected for 12.0.

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