摘要
某乘用车路试时出现后副车架开裂现象,为了解决这个问题,采集道路载荷谱,结合有限元法对该后副车架进行疲劳损伤分析,得到疲劳失效部位与路试开裂位置一致,确定结构薄弱部位并验证疲劳损伤分析的可行性。通过结构局部加强改进设计,再次计算疲劳损伤值,计算结果满足标准,通过路试不再出现开裂现象,满足疲劳特性要求,达到预期目标。
The rear subframe of a passenger car cracked during the road test.In order to solve this problem,the road load spectrum was collected,and the fatigue damage of the rear subframe was analyzed combined with the finite element method.It was found that the fatigue failure position was consistent with the cracking position of the road test,the weak part of the structure was determined,and the feasibility of fatigue damage analysis was verified.The fatigue damage value is calculated again through the local strengthening and improvement design of the structure,and the calculation results meet the standard.Through the road test,there is no cracking,meets the requirements of fatigue characteristics and achieves the expected goal.
作者
姜能惠
倪晋挺
李琤
JIANG Nenghui;NI Jinting;LI Cheng(College of Automobile and Rail, Anhui Technical College of Mechanical and Electrical Engineering, Wuhu Anhui 241002, China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2021年第6期129-131,159,共4页
Journal of Jiamusi University：Natural Science Edition
基金
2020年度安徽高校自然科学研究项目(KJ2020A1110)
2020年安徽省质量工程项目(2020zyq23)
安徽机电职业技术学院先进制造技术应用研究院科技创新团队项目(2021kjtd08)。
关键词
后副车架
疲劳分析
有限元
损伤预测
rear subframe
fatigue analysis
finite element
damage prediction
