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 AR1; Li PC1; Wang KY1; Qian GA(钱桂安)2; Berto F3
Corresponding AuthorLi, Peichao(wiselee18@163.com) ; Qian, Guian(qianguian@imech.ac.cn)
Source PublicationTHEORETICAL AND APPLIED FRACTURE MECHANICS
2019-04-01
Volume100Pages:426-433
ISSN0167-8442
AbstractThis 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.
KeywordParameters calibration NLAM Cleavage fracture Weibull parameters Threshold coefficient of fracture process zone
DOI10.1016/j.tafmec.2019.02.004
Indexed BySCI ; EI
Language英语
WOS IDWOS:000462107700041
WOS KeywordWEIBULL STRESS ; BEREMIN MODEL ; TEMPERATURE-DEPENDENCE ; BRITTLE-FRACTURE ; TOUGHNESS ; CONSTRAINT ; PREDICTION ; TRANSFERABILITY ; REGION
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding ProjectNational Natural Science Foundation of China[11872364]
Funding OrganizationNational Natural Science Foundation of China
Classification二类
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78938
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
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.
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