Cyclic uniaxial and multiaxial loading with yield surface distortion consideration on prediction of ratcheting |
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| Affiliation: | 1. Department of Otolaryngology, Peking University People''s Hospital, Beijing, China;2. Department of Clinical Epidemiology, Peking University People''s Hospital, Beijing, China;3. Department of Otolaryngology Head and Neck Surgery Center, Navy Army General Hospital, Beijing, China;4. Department of Addiction and Mental Health, Rockyview General Hospital, Alberta Health Services, Calgary, Alberta, Canada;1. University of Applied Sciences Landshut, Am Lurzenhof 1, 84036 Landshut, Germany;2. Foundry Institute, Technical University Bergakademie Freiberg, Bernhard-von-Cotta-Straße 4, 09599 Freiberg, Germany;1. TU Darmstadt, Research Group of System Reliability, Adaptive Structures, and Machine Acoustics SAM, Magdalenenstr. 4, 64289 Darmstadt, Germany;2. Fraunhofer Institute for Structural Durability and System Reliability LBF, Bartningstr. 47, 64289 Darmstadt, Germany;1. Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;2. Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran |
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| Abstract: | In this study, the yield surface distortion was incorporated in the cyclic plasticity modeling as well as its center movement. The combination of Chaboche’s model and the yield surface distortion model of Baltov was used in a set of uniaxial and multiaxial loadings. The variation of the stress amplitude and the mean stress and different multiaxial loadings such as tension-torsion tests were studied. It was shown that the consideration of the distortion of the yield surface via the distortion parameter and its sign in modeling has an important effect on the plastic strain increment determination and so on the ratcheting rate. The combined model was applied to the experimental results. It was shown that the combination of the nonlinear kinematic hardening model of Chaboche and the yield surface distortion leads to a good estimation of the ratcheting strain increment in different uniaxial and multiaxial tests. |
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