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Experimental Research of Mechanical Behavior and Constitutive Model for Mould Steel NAK80
Fu T(付涛); Liu WJ(刘伟军); Zhao JB(赵吉宾)
作者部门装备制造技术研究室
会议名称5th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)
会议日期January 16-17, 2013
会议地点Hong Kong, PEOPLES R CHINA
会议主办者Cent S Univ, Harbin Engn Univ
会议录名称International Conference on Measuring Technology and Mechatronics Automation
出版者IEEE
出版地NEW YORK
2013
页码544-547
收录类别EI ; CPCI(ISTP)
EI收录号20131816286238
WOS记录号WOS:000320989700132
产权排序1
ISSN号2157-1473
ISBN号978-0-7695-4932-3
关键词Mould Steel Nak80 Stress-strain Curve Johnson-cook Constitutive Model Plastic Flow Behavior
摘要The experiment of mechanical behaviors test of plastic mould steel NAK80 is carried out at a wide temperature range (25 degrees C similar to 500 degrees C) and high strain rates (700s(-1)similar to 5000s(-1) with the INSTRON-5887 electronic material test machine, GLEEBLE-3500 thermal simulator and Split Hopkinson Pressure Bar (SHPB). The stress-strain curves of NAK80 under temperature and strain rate actions are obtained. On the basis, the mechanism of effect of temperature and strain rate on the plastic flow stress of material is discussed. The results show that the plastic flow behavior of NAK80 is less sensitive to strain rate. And the flow stress decreases with temperature increasing at the same strain rate (10(-2)s(-1)) as well as yield strength. Under the condition of high temperature, its thermal softening effect is obvious, leading to stress decreasing with strain increasing after yielding. The Johnson-Cook constitutive model, fitted by the stress-strain curves that are obtained from the experiments, can provide satisfactory prediction and description of the plastic flow behavior of mould steel NAK80.
语种英语
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文献类型会议论文
条目标识符http://ir.sia.cn/handle/173321/12394
专题装备制造技术研究室
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Fu T,Liu WJ,Zhao JB. Experimental Research of Mechanical Behavior and Constitutive Model for Mould Steel NAK80[C]//Cent S Univ, Harbin Engn Univ. NEW YORK:IEEE,2013:544-547.
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