摘要
针对疲劳裂纹扩展试验中采用传统的差分方法得到的da dN—ΔK数据分散性较大的问题 ,提出了得到裂纹扩展速率的积分方法 ,并将两种方法与试验结果进行了比较 ,结果表明 ,积分方法得到的结果与试验结果符合得很好 。
In allusion to the great dispersion of the data da/dN-ΔK obtained by the traditional method of finite difference, the method of integration is proposed to determine the growth rate of fatigue crack. The two methods are compared and it can be shown that the result given by the method of integration is consistent to the experimental result satisfactorily, and the growth rate of fatigue crack will be more rigorous.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2001年第2期213-215,共3页
Journal of Mechanical Strength
关键词
疲劳
裂纹扩展速率
积分法
差分法
Fatigue
Crack growth rate
Method of integration
Method of finite difference
