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| AFM试样复合加载下的计算断裂分析(英文) | |
| 引用本文： | 朱莉,李庆芬. AFM试样复合加载下的计算断裂分析(英文)[J]. 船舶与海洋工程学报, 2011, 10(1): 105-112. DOI: 10.1007/s11804-011-1048-3 |
| 作者姓名： | 朱莉 李庆芬 |
| 作者单位： | 朱莉,李庆芬,Li Zhu,Qingfen Li(College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China);F. G. Buchholz,F. G. Buchholz(Institute of Applied Mechanics, D-33098 Paderborn, Germany) |
| 摘 要： | Fracture processes in ship-building structures are in many cases of a 3-D character.A finite element (FE) model of an all fracture mode (AFM) specimen was built for the study of 3-D mixed mode crack fracture behavior including modes I,II,and III.The stress intensity factors (SIFs) were calculated by the modified virtual crack closure integral (MVCCI) method,and the crack initiation angle assessment was based on a recently developed 3-D fracture criterion––the Richard criterion.It was shown that the FE model of the AFM-specimen is applicable for investigations under general mixed mode loading conditions,and the computational results of crack initiation angles are in agreement with some available experimental findings.Thus,the applicability of the FE model of the AFM-specimen for mixed mode loading conditions and the validity of the Richard criterion can be demonstrated. |
| 关 键 词： | 3-D crack fracture behavior stress intensity factors (SIFs) all fracture mode (AFM) specimen crack initiation angle mixed mode loading conditions |
Computational fracture analysis of an AFM-specimen under mixed mode loading conditions |
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| Li Zhu,Qingfen Li,F. G. Buchholz. Computational fracture analysis of an AFM-specimen under mixed mode loading conditions[J]. Journal of Marine Science and Application, 2011, 10(1): 105-112. DOI: 10.1007/s11804-011-1048-3 | |
| Authors: | Li Zhu Qingfen Li F. G. Buchholz |
| Affiliation: | 1. College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, 150001, China 2. Institute of Applied Mechanics, D-33098, Paderborn, Germany |
| Abstract: | Fracture processes in ship-building structures are in many cases of a 3-D character. A finite element (FE) model of an all fracture mode (AFM) specimen was built for the study of 3-D mixed mode crack fracture behavior including modes I, II, and III. The stress intensity factors (SIFs) were calculated by the modified virtual crack closure integral (MVCCI) method, and the crack initiation angle assessment was based on a recently developed 3-D fracture criterion—the Richard criterion. It was shown that the FE model of the AFM-specimen is applicable for investigations under general mixed mode loading conditions, and the computational results of crack initiation angles are in agreement with some available experimental findings. Thus, the applicability of the FE model of the AFM-specimen for mixed mode loading conditions and the validity of the Richard criterion can be demonstrated. |
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