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Study on interface failure of shape memory alloy (SMA) reinforced smart structure with damages

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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.

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Authors and Affiliations

  1. The Aeronautical Science Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Zili Hu, Ke Xiong & Xinwei Wang

Authors
  1. Zili Hu
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  2. Ke Xiong
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  3. Xinwei Wang
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Corresponding author

Correspondence to Zili Hu.

Additional information

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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Hu, Z., Xiong, K. & Wang, X. Study on interface failure of shape memory alloy (SMA) reinforced smart structure with damages. ACTA MECH SINICA 21, 286–293 (2005). https://doi.org/10.1007/s10409-005-0031-0

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  • DOI: https://doi.org/10.1007/s10409-005-0031-0

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