悬置螺栓断裂失效分析  

Fracture Failure Analysis for Suspension Bolt

作　　者：庞院 王福平 马秋[1] 郭秋彦[1] 袁成逸 PANG Yuan;WANG Fu-ping;Ma Qiu;GUO Qiu-yan;YUAN Cheng-yi(Zhejiang Geely Automobile Research Institute,Ningbo 315336)

机构地区：[1]浙江吉利汽车研究院有限公司,宁波315336

出　　处：《环境技术》2020年第3期180-183,共4页Environmental Technology

摘　　要：本文从断口分析、化学成分、机械性能、拧紧性能等方面开展综合验证,分析了某汽车悬置螺栓断裂原因。结果表明,该螺栓为摩擦系数变化引起的过载断裂。Based on the analysis of fracture,chemical composition,mechanical properties,tightening performance and other aspects of comprehensive verification,this paper analyzes the cause of the suspension bolt fracture of a certain automobile.The results show that the bolt is overload fracture caused by the change of friction coefficient.

关 键 词：悬置螺栓 过载断裂 摩擦系数 轴向力 

分 类 号：TG142.1[一般工业技术—材料科学与工程]