Experimental Research of Mechanical Behavior and Constitutive Model for Mould Steel NAK80

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 装备制造技术研究室

	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)
	2013
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
关键词	Mould steel NAK80 Stress-strain curve Johnson-Cook constitutive model Plastic flow behavior
页码	544-547
中文摘要	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.
收录类别	EI ; CPCI（ISTP）
产权排序	1
会议主办者	Cent S Univ, Harbin Engn Univ
会议录	International Conference on Measuring Technology and Mechatronics Automation
会议录出版者	IEEE
会议录出版地	NEW YORK
语种	英语
ISSN号	2157-1473
ISBN号	978-0-7695-4932-3
WOS记录号	WOS:000320989700132
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/12394]
专题	沈阳自动化研究所_装备制造技术研究室
推荐引用方式 GB/T 7714	Fu T,Liu WJ,Zhao JB. Experimental Research of Mechanical Behavior and Constitutive Model for Mould Steel NAK80[C]. 见:5th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA). Hong Kong, PEOPLES R CHINA. January 16-17, 2013.