摘要
本文针对复合材料与金属结构穿透型损伤外贴复合材料补片胶接修补方式 ,采用“双板 -弹簧”有限元修正模型 ,进行了各修补参数 (补片直径、厚度、修补形式以及胶层厚度等 )对修补效率的影响分析。主要结论 :(1)补片直径对修补效率的影响非常小 ;(2 )单面修补取补片厚度为 5 0 %母板厚度 ,双面修补取 80 %是合理的 ;(3)胶层厚度通过影响胶层内最大剪应力大小影响修补效率 ;(4 )修补参数相同情况下 ,被修补结构的尺寸影响修补效率 ;(5 )
A 'double-plate with spring' model and finite element computation have been employed in this paper for the analysis of adhesi ve bonding patch technique to repair through-thick damaged composite laminates and metal structural components. Some effects of patch geometrical parameters on repair efficiency have been investigated, such as patch diameter, its thickness , its layout and bonding thickness, etc. Several major conclusions have been dra wn in this paper: (1) patch diameter has less important effect on strength recov ering efficiency; (2) there exists reasonable relative patch thickness for repai r effect, which is 50% thickness of damaged mother-plate for one-side layout o f bonding patch, and 80% that for twin-side one; (3) the effect of bonding inte rface thickness on repair efficiency depends on the maximal shear stress inside of the interface; (4) the size of repaired components with the same damage and b onding geometry has some influence on repair efficiency; (5) the laws of patch p arameter influence for damaged composite laminates are very similar to those for metallurgical structural components.
出处
《机械科学与技术》
EI
CSCD
北大核心
2001年第5期748-750,共3页
Mechanical Science and Technology for Aerospace Engineering
关键词
有限元计算
胶接修补技术
复合材料片
航空维修
修补效率
Finite e lement computation
Adhesive bonding technique
Composite patch
Repair efficien cy
