Life prediction based on weight‐averaged maximum shear strain range plane under multiaxial variable amplitude loading |
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| Authors: | Z.‐Q. Tao D.‐G. Shang H. Liu H. Chen |
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| Affiliation: | College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China |
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| Abstract: | Based on Wang and Brown's reversal counting method, a new approach to the determination of the critical plane is proposed by the defined plane with a weight‐averaged maximum shear strain range under multiaxial variable amplitude loading. According to the determined critical plane, a detailed procedure of multiaxial fatigue life prediction is introduced to predict lives in the low‐cycle multiaxial fatigue regime. The proposed approach is verified by two multiaxial fatigue damage models and Miner's linear cumulative damage law. The results showed that the proposed approach can effectively predict the orientation of the failure plane under multiaxial variable amplitude loading and give a satisfactory life prediction. |
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| Keywords: | critical plane life prediction low‐cycle fatigue multiaxial variable amplitude loading weight function |
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