浅裂纹COD减小因子m值的分析与计算

Calculating and Analysis for COD Reduction Factor m of Shallow Crack

提出了适用于工程中浅裂纹J积分和COD的关系式，根据实验和三维有限元计算的结果，对COD值减小因子m值和塑性应变能进行了分析，为浅裂纹断裂强度设计与断裂破坏分析提供一种思路。

This paper deals with relationship of shallow crack between J integral and crack opening displacement, it is adaptation to engineering. According to results of experiment and 3-D FEM computation, COD reduction factor m and plastic strain energy are analyzed, the conclusion provides a way forstrength design and damage analysis of shallow crack.