胶铆混合修理结构疲劳裂纹扩展性能分析  

Analysis of Fatigue Crack Growth Performance of Adhesive-rivet Hybrid Repaired Structure

作　　者：喻健 缑百勇[1] 陈桂勇 张腾[1] 马斌麟 樊祥洪 陈鑫 王逸韬 YU Jian;GOU Baiyong;CHEN Guiyong;ZHANG Teng;MA Binlin;FAN Xianghong;CHEN Xin;WANG Yitao(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038;94795 Troops of the Chinese People’s Liberation Army,Nantong 226500)

机构地区：[1]空军工程大学航空工程学院,西安710038 [2]中国人民解放军94795部队,南通226500

出　　处：《机械工程学报》2023年第22期352-368,共17页Journal of Mechanical Engineering

摘　　要：蒙皮结构修理对于飞行器安全使用十分重要,修理工艺的不同往往导致修理结构的疲劳性能差异较大。现有文献资料大多集中于单一连接方式的载荷传导研究,对于采用混合连接方式修理的研究相对较少,并且缺乏对修理结构的疲劳寿命预测。针对蒙皮修理结构的疲劳寿命预测问题,开展裂纹板、铆接修理、胶接修理和胶铆混合修理试验件的疲劳试验,并基于有限元方法建立裂纹扩展寿命预测模型。通过疲劳试验结果验证所建立的修理结构裂纹扩展寿命预测模型精度较高,预测得到修理结构疲劳寿命误差不大于10%。结果表明,相比铆接和胶接两种单一连接修理方式,胶铆混合修理方式能有效提高裂纹板疲劳寿命和胶接可靠性;建立的修理结构裂纹扩展寿命预测模型能可靠预测修理结构疲劳寿命,对于工程应用具有参考价值。The repair of skin structure is very important for the safe use of aircraft,different repair technology often leads to the great difference of fatigue performance of repaired structure.Most of the existing literature focuses on the study of load conduction with single connection mode,and there are relatively few studies on the repair with hybrid connection mode,and the fatigue life prediction of the repaired structure is lacking.Aiming at the problem of fatigue life prediction of skin repair structures,the fatigue tests of crack plate,riveted repair,adhesive repair and adhesive-rivet repair specimens were carried out,and established the finite element model which can predict crack growth life of repair structures.Fatigue test results show that the established crack expansion life prediction model is accurate,and the error of repair structure’s fatigue life is no more than 10%.The results show that,compared with riveting and bonding,the adhesive-rivet repair can effectively improve the fatigue life and bonding reliability of the cracked plate.The established prediction model can reliably predict fatigue life of repaired structures and has reference value for engineering applications.

关 键 词：疲劳裂纹扩展 疲劳寿命预测 应力强度因子 修理参数 有限元分析 

分 类 号：TG498[金属学及工艺—焊接]