| 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
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| Corresponding Author | Li, Peichao([email protected]) ; Qian, Guian([email protected]) |
| Source Publication | THEORETICAL AND APPLIED FRACTURE MECHANICS
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| 2019-04-01 | |
| Volume | 100Pages:426-433 |
| ISSN | 0167-8442 |
| Abstract | 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. |
| Keyword | Parameters calibration NLAM Cleavage fracture Weibull parameters Threshold coefficient of fracture process zone |
| DOI | 10.1016/j.tafmec.2019.02.004 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000462107700041 |
| WOS Keyword | WEIBULL STRESS ; BEREMIN MODEL ; TEMPERATURE-DEPENDENCE ; BRITTLE-FRACTURE ; TOUGHNESS ; CONSTRAINT ; PREDICTION ; TRANSFERABILITY ; REGION |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National Natural Science Foundation of China[11872364] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Li, Peichao ; Qian, Guian |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78937 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| 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.Rp_Au:Li, Peichao, Qian, Guian |
| 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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| Jp2019162.pdf（2202KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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