Transactions of Materials and Heat Treatment

Title：Influence of sheet metal springback on the fatigue life of high strength steel wheel

Authors： Chen Lei Li Shunping Yuan Haizhou Tong Shuiguang Ding Mingming

Unit： Zhejiang Jingu Wheel Zhejiang University Zhejiang University of Water Resources and Electric Power

KeyWords： sheet springback high strength steel wheel fatigue property springback angle fatigue life

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(11):54-57

Abstract：

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.

Funds：

浙江省科技厅公益性研究项目（2014C31092）

陈磊（1979-），男，博士，副教授

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