6.9 Ductile damage initiation criterion enhancements in Abaqus/Explicit

Product: Abaqus/Explicit  

Benefits: You can now define the ductile damage initiation criterion in Abaqus/Explicit as a function of Lode angle to improve damage predictions.

Description: The ductile damage initiation criterion in Abaqus/Explicit has been enhanced to allow the definition of the equivalent plastic strain at the onset of damage as a tabular function of Lode angle (or deviatoric polar angle), in addition to stress triaxility and strain rate. The Lode angle, which is related to the normalized third invariant of deviatoric stress, has been shown experimentally to have a significant influence in the ductile fracture of aluminum alloys, advanced high-strength steels, and other metals.

References:

Abaqus Analysis User's Manual

Abaqus Keywords Reference Manual

Abaqus Verification Manual