摘要
利用其局部解构造了一种新的大曲率缺口位移模式;建立含大曲率缺口损伤结构有限元方程和与相应的缺口奇异单元;提出了求解大曲率缺口应力与应力强度因子等断裂参量的数值计算方法,数值算例说明本文方法是一种有效的数值计算分析方法。
A new displacement model of blunt cracks is constructed by using the local solutions. The new singular element at the end of a blunt crack is obtained, the new method for calculating stress intensity factors of blunt crack problems is presented. Solutions obtained by using the present method are in agreement with the theoretical solutions. The validity of the present method is illustrated by numerical examples.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2006年第2期85-86,89,共3页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家自然科学基金(10132010)
中国博士后科学基金资助项目(2003033290)
关键词
应力强度因子
奇异单元
钝裂纹
有限元方法
stress intensity factor
singular element
blunt crack
finite element method
