A Comparative Study of Different Biaxial Fatigue Models


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There are a number of theories available to model biaxial fatigue problems. Among these, the critical plane models try to predict not only the fatigue life but also the orientation of the crack or failure plane. This work attempt to analyse the biaxial tension-torsion problem from a strain-based analysis focused on plane failures predictions. Fatigue life and critical plane predictions are carried out applying multiaxial models proposed by Brown-Miller, Fatemi-Socie and Smith-Watson-Topper. The theoretical results are compared with constant amplitude test data, in-phase and out-of-phase (90˚) in a structural steel. The results suggest that Smith-Watson-Topper model predictions of fracture plane do not match the real fracture plane. The critical fracture plane predictions of the Brown-Miller and Fatemi-Socie models do not match in most cases with experimental observations either, but considering the second plane of the maximum shear strain amplitude, the predictions of the fracture plane and fatigue life improve substantially.



Key Engineering Materials (Volumes 452-453)

Edited by:

A. Saimoto and M.H. Aliabadi




P. Lopez-Crespo et al., "A Comparative Study of Different Biaxial Fatigue Models", Key Engineering Materials, Vols. 452-453, pp. 53-56, 2011

Online since:

November 2010




[1] Socie DF, Marquis GB. Multiaxial Fatigue. Warrendale, PA (USA): Society of Automotive Engineers, Inc., (2000).

[2] Brown MW, Miller KJ. A theory for fatigue under multiaxial stress-strain conditions. Proceedings of the Institution of Mechanical Engineers. 1973; 187: 745-755.

DOI: https://doi.org/10.1243/pime_proc_1973_187_069_02

[3] Fatemi A, Socie D. A Critical Plane approach to multiaxial fatigue damage including out-ofphase loading. Fatigue and fracture of engineering materials and structures. 1988; 11(3): 149-165.

DOI: https://doi.org/10.1111/j.1460-2695.1988.tb01169.x

[4] Smith R, Watson P, Topper P. A stress-strain parameter for the fatigue of metals. Journal of Materials. 1970; 5(4): 767-778.

[5] Moreno B, Lopez-Crespo P, Gonzalez-Herrera A, Zapatero J. Multiaxial fatigue evaluation of ST52-3N strucctural steel. Key Engineering Materials. 2010; 1-2: 802-805.

DOI: https://doi.org/10.4028/www.scientific.net/kem.452-453.41