abaqus帮助文档-shear-damage (1).docx

节选段落一：
Shear damage
The Shear damage initiation criterion is a model for predicting the onset of damage due to shear band localization. The model assumes that the equivalent plastic strain at the onset of damage is a function of the shear stress ratio and strain rate.


节选段落二：
The shear criterion can be used in conjunction with the Mises, Johnson-Cook, Hill, and Drucker-Prager plasticity models, including equation of state.
For more information, see �Damage initiation for ductile metals,� Section 23.2.2 of the Abaqus Analysis User's Manual.
To define shear damage:
1.


节选段落三：
Enter damage parameters in the Data table:
Fracture Strain
Equivalent fracture strain at damage initiation.
Shear Stress Ratio
The shear stress ratio is defined as  , where q is the Mises equivalent stress, p is the pressure stress, and  is the maximum shear stress.