Validation of the Two-Parameter Fracture Criterion using finite-element analyses with the critical CTOA fracture criterion

Newman J. C. Jr.; Newman J. C. III

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Validation of the Two-Parameter Fracture Criterion using finite-element analyses with the critical CTOA fracture criterion

机译：使用临界CTOA断裂准则的有限元分析验证两参数断裂准则

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Elastic-plastic finite-element analyses employing the critical crack-tip-opening-angle (CTOA) fracture criterion were used to simulate fracture on thin-sheet middle-crack-tension, M(T), specimens made of several aluminum alloys over an extremely large range of widths (18-5700-mm) for a wide range in crack-length-to-width ratios. A linear relation between elastic stress-intensity factor (K-Ie) and net-section stress (S-n) at failure was observed for Sn less than yield stress of the material. Test data on two aluminum alloys (2024-T3 and 2219-T87) over a wide range of M(T) specimen widths (76-600-mm and 76-1200-mm, respectively) supported the linear relationship that validated the Two-Parameter Fracture Criterion. (C) 2015 Elsevier Ltd. All rights reserved.

机译：弹塑性有限元分析采用临界裂纹尖端张开角（CTOA）断裂准则，用于模拟薄板中裂纹强度M（T）的断裂，该断裂是由几种铝合金制成的宽的宽度范围（18-5700-mm），可实现宽的裂缝长度与宽度之比。对于Sn小于材料的屈服应力，观察到破坏时弹性应力-强度因子（K-Ie）与净截面应力（S-n）之间的线性关系。关于两种铝合金（2024-T3和2219-T87）在较宽的M（T）试样宽度范围（分别为76-600-mm和76-1200-mm）上的测试数据支持了验证两者的线性关系。参数断裂准则。（C）2015 Elsevier Ltd.保留所有权利。

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《Engineering Fracture Mechanics》 |2015年第null期|共11页
作者
Newman J. C. Jr.; Newman J. C. III;
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正文语种 eng
中图分类工程力学;
关键词
Fracture; Aluminum alloys; Plasticity; Cracks; Stress-intensity factor; Finite elements; CTOA;

机译：断裂;铝合金;塑性;裂纹;应力强度因子;有限元;CTOA;

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专利

1. Validation of the Two-Parameter Fracture Criterion using 3D finite-element analyses with the critical CTOA fracture criterion [J] . Warren J. M., Lacy T., Newman J. C. Jr. Engineering Fracture Mechanics . 2016,第Null期

机译：使用3D有限元分析和临界CTOA断裂准则验证两参数断裂准则
2. Validation of the two-parameter fracture criterion for various crack configurations made of 2014-T6 aluminum alloy using finite-element fracture simulations - Part 1 LT-Orientation [J] . Himmiche S., Malki M., Newman J. C. Jr. Engineering Fracture Mechanics . 2019,第期

机译：使用有限元骨折模拟对2014-T6铝合金制成的各种裂纹配置的双参数断裂标准验证 - 第1部分LT-DIRENTION
3. Validation of the two-parameter fracture criterion for various crack configurations made of 2014-T6 aluminum alloy using finite-element fracture simulations - Part 2 TL-Orientation [J] . Malki Mounia, Himmiche S., Newman J. C. Jr. Engineering Fracture Mechanics . 2019,第期

机译：使用有限元断裂模拟验证由2014-T6铝合金制成的各种裂纹配置的两参数断裂标准 - 第2部分TL-intive
4. CONSTRAINT ANALYSES WITH TWO-PARAMETER FRACTURE CRITERION UNDER UNIAXIAL AND BIAXIAL LOADINGS [C] . Guian Qian, Yupeng Cao, Markus Niffenegger International Conference on Fracture . 2017

机译：在单轴和双轴荷载下的两个参数裂缝标准进行约束分析
5. Validation of the Two-Parameter Fracture Criterion Using Critical CTOA on 7075-T6 Aluminum Alloy [D] . Ouidadi, Hasnaa. 2017

机译：使用临界CTOA对7075-T6铝合金的两个参数断裂准则的验证
6. Effects of Initial Values and Convergence Criterion in the Two-Parameter Logistic Model When Estimating the Latent Distribution in BILOG-MG 3 [O] . Ingo W. Nader, Ulrich S. Tran, Martin Voracek -1

机译：估计BILOG-MG 3中的潜在分布时两参数Logistic模型中初始值和收敛准则的影响
7. A Review of the CTOA/CTOD Fracture Criterion: Why it Works [O] . Newman J. C. Jr., James M. A. 2001

机译：CTOA / CTOD骨折标准的回顾：为什么起作用
8. Review of the CTOA/CTOD Fracture Criterion: Why it Works. [R] . Newman, J. C., James, M. A. 2001

机译：审查CTOa / CTOD断裂标准：为何起作用。

Validation of the Two-Parameter Fracture Criterion using finite-element analyses with the critical CTOA fracture criterion

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