Journal of Shanghai Jiao Tong University ›› 2022, Vol. 56 ›› Issue (6): 801-808.doi: 10.16183/j.cnki.jsjtu.2021.051

• Mechanical Engineering • Previous Articles     Next Articles

A Novel Prediction Model for Fatigue Strength

DUAN Hongyana, TANG Guoxina(), SHENG Jieb, CAO Mengjiea, PEI Leia, TIAN Hongweia   

  1. a. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    b. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2021-02-10 Online:2022-06-28 Published:2022-07-04
  • Contact: TANG Guoxin


Fatigue failure is one of the most important reasons for the failure of engineering application components. However, due to the high cost of fatigue experiments, it is necessary to use mechanical properties to predict fatigue strength. Based on the true stress-strain curves, a novel model for fatigue strength prediction is established and is used to calculate the fatigue strength. The strength predicted is compared with that calculated by the staircase method and the Basquin equation. The results show that the model could obtain the fatigue strength of the materials only by using tensile strength and work-hardening strength, and it is suitable for other steels, which greatly saves costs and increases accuracy.

Key words: fatigue strength prediction model, true stress-strain curve, Basquin equation, fatigue strength parameters

CLC Number: