复合材料补片参数对修理后金属结构疲劳性能的影响  

Effects of Patch Parameters on Fatigue Performance of Metallic Structure Repaired with Adhesively Bonded Composite Patch

作　　者：张玎[1] 杨晓华[1] 周凯[1] 杨凯[1] 

机构地区：[1]海军航空工程学院青岛分院,青岛266041

出　　处：《南京航空航天大学学报》2010年第3期369-373,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：为评估复合材料补片参数对修理后金属结构疲劳性能的影响,本文基于复变量Green函数方法,利用AFGROW软件建立了复合材料补片胶接修补损伤飞机金属结构裂纹扩展寿命分析模型。研究结果表明:(1)该模型精度较高,可以满足工程要求;(2)修理结构的裂纹扩展寿命随着补片宽度的增大而增加,但增幅越来越小,寿命变化曲线趋于平稳;(3)由于无法考虑脱粘扩展,结构修理后的裂纹扩展寿命随补片厚度只呈现上升趋势;(4)在可达性满足的情况下,宜对含裂纹结构进行双面修理。In order to evaluate the effects of composite patch dimensions and single-sided and double-sided repair on the fatigue performance of metallic structure repaired with adhesively bonded composite patch, the analysis model of crack propagation life of repaired aircraft metallic structure is established with AFGROW software based on complex variable Green function approach. Results show that： （1） the accuracy of the model is high enough to meet the engineering requirements; （2）the crack propagation life of the repaired structure increases with the patch width, but the amplitude becomes smaller, and the life curve goes to flat; （3）the changing trend of crack propagation life with increasing thickness is only ascending because the delamination growth cannot be considered; （4）the double-sided repair is better when it is reachable.

关 键 词：复合材料补片胶接修理 AFGROW软件 补片尺寸 单双面修理 

分 类 号：V264.45[航空宇航科学与技术—航空宇航制造工程] V258[一般工业技术—材料科学与工程]