航空工程进展2011，Vol.2Issue(4)：437-443,7.
多裂纹结构中的多部位／多元件相互影响因子
Multiple Site/Multiple Element Interactive Factors of Multiple Cracks Structure
摘要
Abstract
Multiple cracks severely affect damage tolerance capability of aircraft connection structure. Damage with multiple cracks, which has a strong impact on the capability of damage tolerance of aircraft structure, is difficult for damage tolerance assessment of aircraft structures. For one solution to this problem, two interactive factors, which are multiple site interactive factor （MSIF） and multiple element interactive factor （MEIF）, are introduced to structures with multiple cracks in order to reflect the interaction between cracks. The finite element calculation to obtain the two factors for certain structure with multiple cracks is also given. Two typical structures with multiple cracks are simulated to obtain the MSIF and MEIF under various cracking patterns. Based upon the factors obtained above, the crack propagation life and residual strengths of structures are predicted and compared. The conclusion is that MSIF and MEIF can be used to describe the interaction between cracks and elements and play an important role in analysis of crack propagation life and residual strength.关键词
多裂纹结构/多部位相互影响因子/多元件相互影响因子/有限元/裂纹扩展/剩余强度Key words
multiple cracks structure/multiple site interactive factor/multiple element interactive factor/Finite Element/crack propagation/residual strength分类
航空航天引用本文复制引用
管世民,王生楠..多裂纹结构中的多部位／多元件相互影响因子[J].航空工程进展,2011,2(4):437-443,7.
