A simplified method for parameters calibration of the new local approach model for cleavage fracture in a ferritic steel

doi:10.1016/j.tafmec.2019.02.004

IMECH-IR > 非线性力学国家重点实验室

	A simplified method for parameters calibration of the new local approach model for cleavage fracture in a ferritic steel
	Shen AR 1; Li PC 1; Wang KY 1; Qian GA(钱桂安)2 ; Berto F 3
通讯作者	Li, Peichao(wiselee18@163.com) ; Qian, Guian(qianguian@imech.ac.cn)
发表期刊	THEORETICAL AND APPLIED FRACTURE MECHANICS
	2019-04-01
卷号	100 页码:426-433
ISSN	0167-8442
摘要	This work presents a simplified method for parameters calibration of the new local approach model (NLAM) for cleavage fracture in a ferritic steel. Based on the Beremin model, a NLAM was recently proposed by Lei (2016) to calculate the Weibull parameters. Although the above NLAM proves to be mathematically and physically self-consistent, yet there are still no reliable and convenient methods to calibrate the model parameters. Considering the plastic volume is determined by the threshold coefficient of fracture process zone lambda, we adopt four different values of lambda in this work to calculate the plastic volume so as to obtain four groups of calibrated Weibull parameters. The material used in this study is the pressure vessel steel 20MnMoNi55 with some published strength data under two subzero temperatures. And the finite element analysis FEA) software ABAQUS is employed to obtain the stress distributions, then the calibration results for four different values of lambda are compared and analyzed. These efforts show that taking lambda = 1.5 is a more reasonable and reliable choice.
关键词	Parameters calibration NLAM Cleavage fracture Weibull parameters Threshold coefficient of fracture process zone
DOI	10.1016/j.tafmec.2019.02.004
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000462107700041
关键词[WOS]	WEIBULL STRESS ; BEREMIN MODEL ; TEMPERATURE-DEPENDENCE ; BRITTLE-FRACTURE ; TOUGHNESS ; CONSTRAINT ; PREDICTION ; TRANSFERABILITY ; REGION
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
资助项目	National Natural Science Foundation of China[11872364]
项目资助者	National Natural Science Foundation of China
论文分区	二类
力学所作者排名	1
RpAuthor	Li, Peichao ; Qian, Guian
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/78937
专题	非线性力学国家重点实验室
作者单位	1.Shanghai Univ Engn Sci, Sch Mech & Automot Engn, Shanghai 201620, Peoples R China; 2.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China; 3.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway
推荐引用方式 GB/T 7714	Shen AR,Li PC,Wang KY,et al. A simplified method for parameters calibration of the new local approach model for cleavage fracture in a ferritic steel[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2019,100:426-433.
APA	Shen AR,Li PC,Wang KY,钱桂安,&Berto F.(2019).A simplified method for parameters calibration of the new local approach model for cleavage fracture in a ferritic steel.THEORETICAL AND APPLIED FRACTURE MECHANICS,100,426-433.
MLA	Shen AR,et al."A simplified method for parameters calibration of the new local approach model for cleavage fracture in a ferritic steel".THEORETICAL AND APPLIED FRACTURE MECHANICS 100(2019):426-433.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2019162.pdf（2202KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文