一种延性材料的统计损伤演化模型

通过对微孔洞成核，成长过程的合理简化，建立了微孔洞演化的控制方程，得到了延性材料微孔洞数密度及损伤演伤方程的解析式。据此讨论了孔洞成核和成长对损伤演化的作用，为连续损伤理论的唯象描述提供了有参考价值的分析。提出了统计损伤与连续损伤理论相结合的损伤演化模型的锥形。

A Model of Statistical Damage Evolution of Ductile Materials

Through proper simplification of the process of micro void nucleation and growth, a controlling equation of micro void evolution was established, and the analytical expression of numeric density and damage evolution were provided. On the basis of the above results, the influence of void nucleation and growth on the damage evolution were discussed and analyzed, and then, an elementary model combining the theories of statistical damage and continuum damage was proposed.