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MESO-MECHANICAL ANALYSIS OF SHAPE MEMORY ALLOY REINFORCED SMART STRUCTURE WITH DAMAGE
作者姓名:Hu  Zili
作者单位:Institute of Unmanned Aircraft,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
摘    要:The mechanical behaviors of shape memory alloy (SMA) wires reinforced smart structure with damage were analyzed through the variational principle, a governing equation for the structure was derived, mathematical expressions for the meso-displacement field, stress-strain field of typical element with damage were presented, and a failure criterion for interface failure between SMA wires and matrix was established under two kinds of actuation which are dead-load and temperature, where the temperature is included in effective free restoring strain. In addition, there are some other composing factors in the failure criterion such as the interface properties, dynamical properties of SMA, initial debonding length L-l etc. The results are significant to understand structural strength self-adapted control and failure mechanism of SMA wires reinforced smart structure with damage.

关 键 词:精确结构  形状记忆合金  失效  中央机械分析变更原理  固体力学
收稿时间:2004-06-03
修稿时间:2006-07-22

MESO-MECHANICAL ANALYSIS OF SHAPE MEMORY ALLOY REINFORCED SMART STRUCTURE WITH DAMAGE
Hu Zili.MESO-MECHANICAL ANALYSIS OF SHAPE MEMORY ALLOY REINFORCED SMART STRUCTURE WITH DAMAGE[J].Acta Mechanica Solida Sinica,2006,19(3):189-195.
Authors:Hu Zili
Institution:1. Department of Mechanical Engineering, University of Birjand, Birjand, Iran;2. Composites Research Laboratory, Faculty of New Science and Technologies, University of Tehran, Tehran1439957131 Iran
Abstract:The mechanical behaviors of shape memory alloy (SMA) wires reinforced smart structure with damage were analyzed through the variational principle, a governing equation for the structure was derived, mathematical expressions for the meso-displacement field, stress-strain field of typical element with damage were presented, and a failure criterion for interface failure between SMA wires and matrix was established under two kinds of actuation which are dead-load and temperature, where the temperature is included in effective free restoring strain. In addition, there are some other composing factors in the failure criterion such as the interface properties, dynamical properties of SMA, initial debonding length L-l etc. The results are significant to understand structural strength self-adapted control and failure mechanism of SMA wires reinforced smart structure with damage.
Keywords:smart structures  damage  shape memory alloy  failure  meso-mechanical analysis  variational principle
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