摘要
探讨离散源撞击下结构生存力研究中的若干问题。首先从结构生存力的概念出 发，给出了结构生存力的定义，接着讨论了影响结构抗撞击生存力的若干因素，并提 出了几种针对不同撞击情况和失效准则的结构抗撞击生存力指标，最后指出了提高 结构抗撞击生存力应重视的一些研究方向。
Chinese engineers are more and more interested in studying the aeronautical and astronautical structure survivability subjected to discrete impact loading. We now present our preliminary study on some aspects of this important problem. In section 1, the definition of structure survivability was given, and the relation between structure survivability and whole aircraft survivability was explained. In section 2, several factors that affect the structure survivability were discussed, they included impact condition, structural material, residual strength, residual stiffness, fatigue performance and failure pattern. In section 3, by referring to different failure patterns of structures with impact damage, several structure survivability targets were presented. they included static failure target, fatigue failure target, partial penetration failure target and deformation failure target, which respectively shown in eqs. (1) through (4) of section 3. Finally, in section 4, some measures that can improve the structure survivability were proposed, the study of structural residual strength with impact damage and mechanical performance of new material were emphasized especially.
出处
《机械科学与技术》
CSCD
北大核心
2000年第z1期70-71,74,共2页
Mechanical Science and Technology for Aerospace Engineering
关键词
结构生存力
撞击损伤
剩余强度
Structure survivability
Impact damage
Residual strength
