摘要
借鉴纤维增强金属层板桥接应力求解模型的理论和方法建立了胶接金属加筋板桥接力的求解模型,利用叠加原理将含裂纹胶接加筋板的Ⅰ型应力强度因子的求解分为2种情况,即利用Swift的位移协调方法求解破损筋条和普通筋条作用下基板的应力强度因子,以及利用桥接力模型求解桥接筋条作用下基板的应力强度因子.同时,利用有限元法和相关文献的实验结果验证桥接力模型和应力强度因子求解方法的有效性.结果表明,所建立的桥接力模型能够快速求解桥接力和胶接加筋板的Ⅰ型应力强度因子.
A theoretical model for distribution of bridging traction in bonded stiffeners which functioned as crack retarder was proposed.An analytical methodology of assessment modeⅠ stress intensity factor for cracked panels with bonded stiffeners was developed based on superposition principles.The analysis included the stress intensity factor solution for cracked skin due to broken and intact stiffeners by using displacement compatibility approach,and the stress intensity factor solution for cracked panels due to bridging stiffener.The methodology was verified by using the finite element method（FEM）and the experimental data from various literature sources.The results show that the theoretical model is effective in obtaining the bridging stress and modeⅠ stress intensity factor for cracked panels with bonded stiffeners.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2016年第2期251-256,264,共7页
Journal of Shanghai Jiaotong University
基金
上海交通大学研究生创新能力培养专项(Z-413-003)资助
关键词
胶接加筋结构
止裂条带
桥接应力
应力强度因子
虚拟裂纹闭合技术
bonded stiffener panel
crack retarder
bridging stress
stress intensity factor
virtual crack closure technique（VCCT）
