| QUANTIFICATION OF SHEAR DAMAGE EVOLUTION IN ALUMINIUM ALLOY 2024T3 |
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| 作者姓名： | Tang Chak-yin Fan Jianping Tsui Chi-pong Lee Tai-chiu Chad Luen-chow Rao Bin |
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| 作者单位： | Tang Chak-yin Fan Jianping Tsui Chi-pong Lee Tai-chiu Chan Luen-chow Rao Bin (Department of Industrial and Systems Engineering，The Hong Kong Polytechnic University，Hong Kong，China) (School of Civil Engineering and Mechanics，Huazhong University Science and Technology，Wuhan 430074，China) |
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| 基金项目： | Project supported by the Research Grants Council of the Hong Kong Special Administrative Region (No. PolyU 5131/98E). |
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| 摘 要： | Shear damage may occur in the process of metal machining such as blanking and cutting, where localized shear deformation is developed. Experimental findings indicate that microscopic shear damage evolution in aluminium alloy 2024T3 (A1 2024T3) is a multi-stage mechanism, including particle cracking, micro-shear banding, matrix microcracking and coalescence of microcracks. This study is an attempt to use a set of equations to describe the multi-stage shear damage evolution in Al 2024T3. The shear damage variables in terms of multi-couple parameters of a power-law hardening material have been defined. An evolution curve of shearing damage has been calculated from experimental data. The values of the shear damage variable at different stages of damage have also been calculated. By making use of the findings, the relation between the microscopic shear damage evolution and the macroscopic shear response of the material has been discussed.
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| 关 键 词： | 铝合金 2024T3 剪切损伤 损伤演化方程 定量化 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006-11-21 |
QUANTIFICATION OF SHEAR DAMAGE EVOLUTION IN ALUMINIUM ALLOY 2024T3 |
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| Tang Chak-yin Fan Jianping Tsui Chi-pong Lee Tai-chiu Chad Luen-chow Rao Bin.QUANTIFICATION OF SHEAR DAMAGE EVOLUTION IN ALUMINIUM ALLOY 2024T3[J].Acta Mechanica Solida Sinica,2007,20(1):57-64. |
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| Authors: | Tang Chak-yin Fan Jianping Tsui Chi-pong Lee Tai-chiu Chan Luen-chow Rao Bin |
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| Institution: | 1. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China;2. School of Civil Engineering and Mechanics, Huazhong University Science and Technology, Wuhan 430074, China;1. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, 22000 Sidi Bel Abbes, Algeria;2. Department of Mechanical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia;3. Laboratoire LPQ3M BP 305, Université de Mascara, Algeria;1. Advanced Institute of Manufacturing with High-tech Innovations & Department of Mechanical Engineering, National Chung-Cheng University, Chia-Yi 62102, Taiwan;2. Aerospace Industrial Development Corporation, Taichung 40760, Taiwan;1. Department of Mechanical-Mechatronics Engineering, The LNM Institute of Information Technology, Jaipur 302031, India;2. Galgotias College of Engineering and Technology, Greater Noida 201306, India;3. CSIR – National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India;1. Advanced Institute of Manufacturing with High-tech Innovations & Department of Mechanical Engineering, National Chung-Cheng University, Chia-Yi, 62102, Taiwan;2. Aerospace Industrial Development Corporation, Taichung, 40760, Taiwan |
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| Abstract: | Shear damage may occur in the process of metal machining such as blanking and cutting, where localized shear deformation is developed. Experimental findings indicate that microscopic shear damage evolution in aluminium alloy 2024T3 (A1 2024T3) is a multi-stage mechanism, including particle cracking, micro-shear banding, matrix microcracking and coalescence of microcracks. This study is an attempt to use a set of equations to describe the multi-stage shear damage evolution in Al 2024T3. The shear damage variables in terms of multi-couple parameters of a power-law hardening material have been defined. An evolution curve of shearing damage has been calculated from experimental data. The values of the shear damage variable at different stages of damage have also been calculated. By making use of the findings, the relation between the microscopic shear damage evolution and the macroscopic shear response of the material has been discussed. |
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| Keywords: | shear damage damage evolution equations shear band hardening material microscopic observation |
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