Probabilistic Modeling of Fatigue Damage Accumulation under Spectrum Loading

Abstract:

A probabilistic methodology for modeling fatigue damage accumulation and fatigue life under variable amplitude loading is proposed in this paper. With probabilistic modifications, the calculative consistency between fatigue damage and life is achieved in the model and the load sequence effects are properly accounted for variable amplitude loading. This damage model overcomes the inherent deficiencies in the linear damage accumulation rule but still preserves its simplicity for engineering application. With Monte Carlo sampling method, numerical verification of this model is conducted under two-level spectrum loading. The predicted probabilistic distributions of fatigue life are validated by the fatigue tests on Al-alloy straight lugs.

• Periodical: Applied Mechanics and Materials (Volume 684)
• Pages: 169-175
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.684.169
• Online since: October 2014
• Authors: Xian Min Chen*, Hong Na Dui
• Keywords: Fatigue Damage, Fatigue Life, Load Sequence Effect, Probabilistic Statistical Model, Statistical Self-Consistency

References

[1] Miner M. A: Journal of Applied Mechanics, 1945, 67: A159~164.

[2] Marco SM, Starkey W L: Transaction of the ASME 1954, 76: 627~632.

[3] Cheng Guangxu, Plumtree A: International Journal of Fatigue, 1998, 20(7): 495~501.

[4] Oller S., Salomón, O. and Oñate, E: Computational Materials Science, 32: 175~195.

[5] Scott-Emuakpor O: Journal of Engineering for Gas Turbines and Power, 130: 062504.

[6] H. Shen, J. Lin, and E. Mu: International Journal of Fatigue, 2000, 22(7): 569~572.

[7] M. Nagode and M. Fajdiga: International Journal of Fatigue, 1998, 20(4): 271–277.

[8] W. -F. Wuand: International Journal of Pressure Vessels and Piping, 1993, 53(2): 273–298.

[9] P. Wang and D. W. Coit: Reliability and Maintainability Symposium, 2007, pp: 392–397.

[10] Tovo R: International Journal of Fatigue, 2000, 22: 425–9.

[11] E. Castillo, A. Fernández-Canteli: International Journal of Fatigue, 2008, 30(1): 150–164.

[12] Vijay Rathod: International Journal of Quality, Statistics and Reliability, (2011).

[13] Sun Xiasheng et al: Guidelines for the Analysis and Design of Durability Aircraft Structures (Xi'an 2007).

[14] Luc D: Non-uniform random variate generation(New York: Springer-Verlag, 1986).

[15] Qin Sun, Hong-Na Dui, Xue-Ling Fan: Int J Fatigue, (2013).

[16] Li Yanbin: Study on the aircraft structure fatigue acceleration spectrum and the wide spread damage probabilistic model(Chinese aeronautical research institute, 2011).

[17] Iqbal Rasool, Xing Zhang and Deyu Cui: ICAS 2002 CONGRESS.

[18] Nijssen RPL, Van Delft DRV, Van Wingerde AM: J Sol Energy Eng 2002; 124(4396): 396-403.

[19] Ling J and Pan J: Int J Fatigue, 1997, 19(5): 415-419.