Kinematic hardening model suitable for ratchetting with steady-state |
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| Institution: | 1. Dept. of Metallic Materials and Structures, ONERA, 29, Avenue de la Division Leclerc, 92322 Chatillon Cedex, France;2. MINES ParisTech, Centre des matériaux, CNRS UMR 7633, BP 87, 91003 Evry Cedex, France;1. Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia;2. Department of Applied Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, People’s Republic of China;3. Institute of Railway Technology, Monash University, Clayton, VIC 3800, Australia;1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China;2. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China;3. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China;1. State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China;2. Key Laboratory of Unconventional Oil & Gas Development, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China;3. Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, PR China |
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| Abstract: | A new kinematic hardening model useful for simulating the steady-state in ratchetting is developed within the framework of the strain hardening and dynamic recovery format. The model is formulated to have two kinds of dynamic recovery terms, which operate at all times and only in a critical state, respectively. The model is examined on the basis of nonproportional experiments of Modified 9Cr–1Mo steel at 550°C and IN738LC at 850°C. The experiments include multiaxial, as well as uniaxial, ratchetting, multiaxial cyclic stress relaxation, and nonproportional cyclic straining along a butterfly-type strain path. It is shown that the model is successful in simulating the experiments, and that the model is featured by the capability of representing appropriately the steady-state in ratchetting under multiaxial and uniaxial cyclic loading. |
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