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	Non-proportionally multiaxial ratcheting of cyclic hardening materials at elevated temperatures: Experiments and simulations
	Kang, GZ ; Li, YG ; Gao, Q
	2010-05-10 ; 2010-05-10
关键词	ratcheting cyclic visco-plasticity cyclic hardening material elevated temperature VISCOPLASTIC CONSTITUTIVE MODEL SS304 STAINLESS-STEEL U71MN RAIL STEEL ROOM-TEMPERATURE 316FR STEEL SURFACE MODEL PART II BEHAVIOR PLASTICITY MODELIZATION Materials Science, Multidisciplinary Mechanics
中文摘要	The uniaxial and non-proportionally multiaxial ratcheting behaviors of cyclic hardening materials at room and elevated temperatures were studied by experiments first. As an auxiliary experiment to reveal the cyclic hardening/softening feature of the material and determine the material parameters used in the developed model, the material was also tested under a uniaxial and a non-proportionally multiaxial strain cycling. Simultaneously, the effects of different loading conditions at certain temperature on the strain cyclic deformation and ratcheting were analyzed. It is shown by experiments that, the strain cyclic deformation and ratcheting behavior of the material have a great dependence on the ambient temperatures, especially to a specific range of 400-600 degrees C, i.e., the material exhibits a markedly dynamic stain aging so that a higher cyclic hardening and lower ratcheting are resulted in, as comparing with the results at other temperatures. Then, based on the aforementioned experimental results, the temperature-dependent ratcheting of the material was simulated by constructing a new visco-plastic constitutive model. In the developed model, the Ohno-Abdel-Karim kinematic hardening model [Ohno, N., Abdel-Karim, M., 2000. Uniaxial ratcheting of 316FR steel at room temperature: 11. Constitutive modeling and simulation. ASME J. Eng. Mater. Technol. 122 (1), 35-41] was extended to simulate the temperature-dependence of ratcheting behavior reasonably by introducing some temperature-dependent terms. It is shown that the simulated results agree with the corresponding experimental results well. (c) 2005 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21583]
专题	清华大学
推荐引用方式 GB/T 7714	Kang, GZ,Li, YG,Gao, Q. Non-proportionally multiaxial ratcheting of cyclic hardening materials at elevated temperatures: Experiments and simulations[J],2010, 2010.
APA	Kang, GZ,Li, YG,&Gao, Q.(2010).Non-proportionally multiaxial ratcheting of cyclic hardening materials at elevated temperatures: Experiments and simulations..
MLA	Kang, GZ,et al."Non-proportionally multiaxial ratcheting of cyclic hardening materials at elevated temperatures: Experiments and simulations".(2010).

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