论文信息 - Two-stage fatigue damage cumulative rule

Two-stage fatigue damage cumulative rule

Abstract This paper studies the loading sequence effect on fatigue damage accumulation and puts forward the kneepoint coordinate formulae and two-stage fatigue damage cumulative rules (KDR) under L-H loading and H-L loading by analysing extensive fatigue damage test data and theoretical research. KDR can be used more widely for various complex loadings than Manson's double linear damage rule. The damage line in the paper is closer to experimental data than Miner's straight line. Experimental verification of two- and three-level stresses with different loading sequences has shown that the average error of residual life estimated by KDR is 12.2% and is much less than that of 50.1% estimated by Miner's rule.

Xu Hao | Wang Dejun | Shi Zhao-Feng

[1] K. J. Miller,et al. Cumulative damage laws for fatigue crack initiation and stage i propagation , 1977 .

[2] Gc Pluvinage,et al. Physical and Mechanical Measurements of Damage in Low-Cycle Fatigue: Applications for Two-Level Tests , 1983 .

[3] Campbell Laird,et al. CUMULATIVE DAMAGE UNDER TWO LEVEL CYCLING: SOME THEORETICAL PREDICTIONS AND TEST DATA , 1979 .

[4] Thang Bui-Quoc,et al. Cumulative damage with interaction effect due to fatigue under torsion loading , 1982 .

[5] S. Subramanyan,et al. A Cumulative Damage Rule Based on the Knee Point of the S-N Curve , 1976 .

[6] G. R. Halford,et al. Re-examination of cumulative fatigue damage analysis—an engineering perspective , 1986 .

[7] J. C. Freche,et al. Application of a double linear damage rule to cumulative fatigue , 1967 .

[8] K. J. Miller,et al. DAMAGE ACCUMULATION DURING INITIATION AND SHORT CRACK GROWTH REGIMES , 1981 .