Life Prediction Techniques for Variable Amplitude Multiaxial Fatigue—Part 1: Theories

Author:

Wang C. H.1,Brown M. W.2

Affiliation:

1. School of Engineering and Technology, Deakin University, Geelong, Australia

2. Department of Mechanical and Process Engineering, University of Sheffield, Sheffield, S1 3JD U.K.

Abstract

Fatigue life prediction under multiaxis random loading is an extremely complex and intractable topic; only a few methods have been proposed in the literature. In addition, experimental results under multiaxis random loading are also scarce. In part one of this two-part paper, a multiaxial non-proportional cycle counting method and fatigue damage calculation procedure are proposed, which is compared with one published damage-searching method. Both theories are based on critical plane concepts, one being an extension of the local strain approach for uniaxial variable amplitude loading and the other employing a new counting algorithm for multiaxis random loading. In principle, these two methods can be considered as bounding solutions for fatigue damage accumulation under multiaxis random loading.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference24 articles.

1. Bannantine, J. A., and Socie, D. F., 1990, “Multiaxial Fatigue Life Estimation Techniques,” presented at ASTM Symposium on Advances in Fatigue Lifetime Predictive Techniques.

2. Bannantine, J. A., and Socie, D. F., 1991a, “A Variable Amplitude Multiaxial Fatigue Life Prediction Method,” Fatigue under Biaxial and Multiaxial Loading, ESIS 10, K. Kussmaul, D. McDiarmid and D. Socie, eds., Mechanical Engineering Publications, London, pp. 35–51.

3. Bannantine, J. A., and Socie, D. F., 1991b, “Variable Amplitude Multiaxial Fatigue: The Influence of Stress State,” EIS 90-Engineering Integrity Through Testing.

4. Brown M. W. , and MillerK. J., 1973, “A Theory for Fatigue Failure Under Multiaxial Stress-Strain Conditions,” Proceedings of the Institution of Mechanical Engineers, Vol. 187, pp. 745–755.

5. Brown, M. W., and Miller, K. J., 1985, “Mode I Fatigue Crack Growth Under Biaxial Stress at Room and Elevated Temperature,” Multiaxial Fatigue, ASTM, STP 853, K. J. Miller and M. W. Brown, eds. American Society for Testing and Materials, Philadelphia, pp. 135–152.

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