Study on interface failure of shape memory alloy (SMA) reinforced smart structure with damages |
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基金项目: | the National Natural Science Foundation of China;中国航空科学基金 |
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摘 要: |
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关 键 词: | 形状记忆合金 分界面缺陷 敏感结构 形状变化规则 机械性质 |
收稿时间: | 4 March 2004 |
修稿时间: | 25 November 2004 |
Study on interface failure of shape memory alloy (SMA) reinforced smart structure with damages |
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Authors: | Email author" target="_blank">Zili?HuEmail author Ke?Xiong Xinwei?Wang |
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Institution: | (1) The Aeronautical Science Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China |
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Abstract: | Shape memory alloy (SMA) reinforced smart structure can be used to make structural shape and strength self-adapted and structural damage self-restrained. Although SMA smart structures without damages were extensively studied, researches on SMA smart structures with damages have rarely been reported thus far. In this paper, thermo-mechanical behaviors of SMA fiber reinforced smart structures with damages are analyzed through a shear lag model and the variational principle. Mathematical expressions of the meso-displacement field and the stress-strain field of a typical element with damages are obtained, and a failure criterion for interface failure between SMA fibers and matrix is established, which is applied to an example. Results presented herein may provide a theoretical foundation for further studies on integrity of SMA smart structures.The project supported by the National Natural Science Foundation of China (10072026, 50135030) and Aeronautical Science Foundation of China (01G52041)The English text was polished by Keren Wang. |
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Keywords: | Smart structures Damages SMA Failure Meso-mechanics analysis Variational principle |
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