摘要
测定三维体内部裂纹前沿应力强度因子的分布，可搞清裂纹扩展规律，进行飞机结构的损伤容限设计．将反射焦散线法与应力冻结、解冻技术相结合，使焦散线法能够用于测量三维体裂纹尖端应力强度因子的分布。
Distributions of stress intensity factors for 3 D crack tip were determined by using the method of reflected caustics in combination with the stress freezing and stress releasing technique.Mixed mode stress intensity factors for a 3 D crack under the complex stress condition were determined and separated by using the causitics and photoelastic methods.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1996年第3期316-320,共5页
Journal of Beijing University of Aeronautics and Astronautics
关键词
三维
裂纹
应力强度因子
焦散线法
应力解除
three dimension
cracks
stress intensity factors
method of caustics
stress relieving
