摘要
车轮用高强钢回弹大、成形难度大,对零件性能影响大。选用15X6车轮研究了回弹角度对疲劳性能的影响,发现轮辐冲压后接合面回弹角度为4°,装配后轮毂的疲劳寿命达不到设计要求。采用数值模拟方法,建立有限元模型分析了不同回弹角度对高强钢轮毂过盈配合的影响,发现回弹角度为4°时,轮辋和轮辐配合面有间隙,且出现应力集中,回弹角度小于2°后消除。设计整形模具对轮辐进行整形,降低回弹角为2°,与轮辋配合疲劳寿命达到了设计要求。
High strength steel used for wheel with large springback property is difficult to be formed and has a large effect on the properties of the wheel. For wheel 15X6,the influence of springback angle on the fatigue life was studied. It is found that the springback angle of the disk joint surface is 4°and the fatigue life fails to reach the design requirement. Therefore,finite element model was built,and the influences of different springback angles on the interference fit of the disk and rim were analyzed. It is found that there is a clearance among the joint surface of the disk and rim when the springback angle is 4°. At the same time,stress concentration appears in the rim,and disappears when the springback angle is smaller than 2°. Furthermore,sizing die is designed to decrease the springback angle of the disk joint surface within 2°,and the fatigue life of the wheel reaches the design requirement.
作者
陈磊
李顺平
袁海州
童水光
丁明明
Chen Lei Li Shunping Yuan Haizhou Tong Shuiguang Ding Mingming(R ＆ D Center, Zhejiang Jingu Wheel, Hangzhou 311400, China Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China School of Mechanical ＆ Automobile Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)
出处
《锻压技术》
CAS
CSCD
北大核心
2016年第11期54-57,共4页
Forging & Stamping Technology
基金
浙江省科技厅公益性研究项目(2014C31092)
关键词
板材回弹
高强钢
轮毂
疲劳性能
回弹角
疲劳寿命
sheet springback
high strength steel
wheel
fatigue property
springback angle
fatigue life
