摘要
文章基于某车型出现的装饰罩支架市场断裂问题,通过对HC340LAD+Z材质的装饰罩支架断口分析、金相检测、化学成分分析及仿真计算,确定失效模式及断裂原因.结果表明:支架的失效模式为疲劳断裂,其断裂原因是支架弯曲处疲劳安全系数过低导致.针对断裂原因对支架进行结构优化改进.改进后的支架通过了路试试验,解决了装饰罩支架断裂问题.
Based on the market fracture problem of decorative cover bracket of a certain vehicle type,through the fracture analysis,Metallographic examination,chemical composition analysis and simulation calculation of the decorative cover bracket made of HC34OLAD+Z material,determine failure mode and fracture reason.The results show that the failure mode of the stent is fatigue fracture,and the fracture reason is caused by the low fatigue safety factor at the bend of the stent.The structure of the stent was optimized and improved according to the fracture reasons.The improved bracket has passed the road test and solved the problem of the fracture of the decorative cover bracket.
作者
常雪嵩
王晨曦
孙诗博
CHANG Xuesong;WANG Chenxi;SUN Shibo(Great Wall Motor Co.,Ltd.,Baoding 071000,China;Heibei Automotive Engine Technology Innovation Center,Baoding 071000,China)
出处
《车辆与动力技术》
2025年第1期59-63,共5页
Vehicle & Power Technology
