Selection of the critical plane orientation in two-parameter multiaxial fatigue failure criterion under combined bending and torsion |
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| Authors: | A Karolczuk E Macha |
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| Affiliation: | 1. College of Automobile and Traffic Engineering，Nanjing Forestry University，Nanjing 210037, Jiangsu, China;2. College of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, China;1. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China;2. State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;3. Center for System Reliability & Safety, University of Electronic Science and Technology of China, Chengdu 611731, China;1. Power Machinery &Vehicular Engineering Institute, Zhejiang University, Hangzhou 310027, China;2. School of Mechanical Engineering, Ningbo University of Technology, Ningbo 315016, China |
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| Abstract: | The present paper is focused on engineering application of the algorithm of fatigue life calculation under multiaxial fatigue loading. For that reason, simple two-parameter multiaxial fatigue failure criterion is proposed. The criterion is based on the normal and shear stresses on the critical plane. Experimental results obtained under multiaxial proportional, non-proportional cyclic loading and variable-amplitude bending and torsion were used to verify the proposed two-parameter criterion and other well-known multiaxial fatigue criteria. Elastic–plastic behaviour of the bulk material was taken into account in calculation of the stress/strain distribution across the specimen cross-section. It is shown that the proposed two-parameter multiaxial fatigue failure criterion gives the best correlation between the experimental and calculated fatigue lives. |
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