Transactions of Materials and Heat Treatment

Title：Stress analysis on the rolling element with nano-sized inclusion

Authors： Sun Hao Sun Dengyue Xu Meng

Unit： Yanshan University

KeyWords： rolling element finite element analysis very fine mesh Abaqus nano-sized inclusion

ClassificationCode：TG333.7+1

year,vol(issue):pagenumber：2016,41(5):78-81

Abstract：

Under the working condition of rolling bearing, the nano-sized inclusion is often found in the inside surfaces of rolling elements in the process of rolling. Experiments show that the fatigue life of the rolling element is influenced by the nano-sized inclusion. With the help of TLP3 contact fatigue testing machine, fatigue life of rolling elements was studied, and the nano-sized inclusion is regarded as the main factor of fatigue life of rolling elements. Then, finite element simulation result was verified by experiment based on this issue. For the model of the inclusion of 2 μm, the very fine grid division was completed innovatively, and the grid minimum is 0.125 μm. The stress around the nano-sized inclusion and rolling element in rolling process was analyzed by the finite element software Abaqus. The stress concentration is found on the inclusion, and the maximum equivalent stress is 1634 MPa.

Funds：

河北省自然科学基金资助项目（E2012203008）

孙浩（1989-）,男，硕士研究生孙登月（1964-），男，博士，教授，博士生导师

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