B737NG飞机主轮连接螺栓断裂失效分析  

Failure Analysis of B737NG Aircraft Main Wheel Connecting Bolt Fracture

作　　者：肖建勋 崔相国 孙斌 严惠平 谭家明 闫燕 梁金豹 XIAO Jianxun;CUI Xiangguo;SUN Bin;YAN Huiping;TAN Jiaming;YAN Yan;LIANG Jinbao(Eastern Airlines Technic Co.,Ltd.,Shanghai 200335;Civil Aviation University of China,Tianjin 300300;Youcaitec Material Co.,Ltd.,Beijing 100095)

机构地区：[1]东方航空技术有限公司,上海200335 [2]中国民航大学,天津300300 [3]北京优材百慕航空器材有限公司,北京100095

出　　处：《现代制造技术与装备》2025年第3期10-13,共4页Modern Manufacturing Technology and Equipment

摘　　要：在飞机起降过程中,机轮轮毂连接螺栓是承受载荷的重要部件。选取B737NG飞机主轮连接螺栓作为研究对象,首先分析螺栓结构与受力情况。其次,针对一组连接螺栓进行失效分析,借助能谱分析和硬度测试等检测手段,明确引起螺栓断裂的主要原因为疲劳断裂。最后,通过分析发现,造成螺栓疲劳失效的可能原因包括人为因素和工程管理漏洞,在此基础上提出完善工程管理工作和优化螺栓检测手段的措施,从而减少螺栓疲劳断裂的风险,提升飞机起降阶段的安全性。In the process of takeoff and landing,the wheel hub connecting bolt is an important part to bear the load.The B737NG aircraft main wheel connection bolt is selected as the research object.Firstly,the structure and stress of the bolt are analyzed.Secondly,the failure analysis of a group of connecting bolts is carried out.By means of energy spectrum analysis and hardness testing,fatigue fracture is the main cause of bolt fracture.Finally,through the analysis,it is found that the possible causes of bolt fatigue failure include human factors and engineering management loopholes.On this basis,measures are proposed to improve engineering management and optimize bolt detection methods,so as to reduce the risk of bolt fatigue fracture and improve the safety of aircraft take-off and landing stage.

关 键 词：飞机主轮 连接螺栓 疲劳断裂 失效分析 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]