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Strategic Study of CAE >> 2006, Volume 8, Issue 7

Contact Pressure and Fatigue Life Prediction of Kiln Rolling Ring Under Intermittent Contact

1. School of Mechanical and Electrical Engineering, Hunan Science and Technology University, Xiangtan, Hunan 411201, China

2. Key Lab of Railway and Traffic Safety, Central South University, Changsha 410075, China

3. Department of Machine and Power Engineering, Shaoyang University, Shaoyang, Hunan 422004, China

Funding project:湖南省自然科学基金资助项目(04JJ3050);湖南省教育厅重点科研计划资助项目(03A052) Received: 2005-07-27 Revised: 2005-09-30 Available online: 2006-07-20

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Abstract

The mathematical models of contact pressure distribution between rolling ring and shell under intermittent contact are set up, the formulae of bending moment and bending stress of tyre are obtained. By applying nominal stress method and local stress-strain method, the fatigue life prediction model of rolling ring is built. The results show that the fatigue life can be improved greatly if the rolling ring load can be controlled within 2 500 kN after kiln alignment. The support angle 30° of rolling ring is unreasonable. There exits an optimal angle which will enhance rolling ring life to the utmost.

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References

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