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Path-Length Based Statistical Analysis of Random Multi-Axial Fatigue Loading Histories
Technical Paper
2011-01-0784
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A statistic fatigue life assessment procedure is presented in this paper for estimating fatigue damage under stationary Gaussian multi-axial loadings with narrow-band frequency. The fatigue damage is determined by using the Miner-Palmgren rule in connection with a recently developed path-length based multi-axial cycle counting and fatigue life assessment method. In this procedure, the path length is determined by averaging sinusoidal waves with uniformly distributed phase angles while the cycles are estimated from the observation of peak counting results of stress components. Numerically simulated random loading paths with different degrees of non-proportionality are used here to compare the proposed statistical method with its time domain counterpart. Possible further improvement in this research direction is also indicated.
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Citation
Wei, Z., Yang, F., and Cheng, H., "Path-Length Based Statistical Analysis of Random Multi-Axial Fatigue Loading Histories," SAE Technical Paper 2011-01-0784, 2011, https://doi.org/10.4271/2011-01-0784.Also In
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