1. W.X. Yao: Fatigue Life Prediction of Structure (Defense Industrial Publications, China 2003), p.88 (in Chinese).
2. S.D. Zhu, X.W. Fang and Editorial Member: Mechanical Engineering Material Features Data Manual (Mechanical Industrial Publications, China 1994), p.753 (in Chinese).
3. M. Feng and C.F. Gong: Tianjin Vehicle Journal (1994) No. 3, p.16 (in Chinese).
4. Y.S. Zhang: Research on Finite Element Structure Analysis and Measurement Test of PT200 Hydraulic Platform Vehicle (MS., Central South University, China 2008), p.39 (in Chinese).
5. B.A. Xu and X.Z. Li: Mechanics of Materials (Shanghai Jiaotong University Publications, China 1988), p.301 (in Chinese).