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首页> 外文会议>Symposium on Structure and Mechanical Properties of Nanophase Materials- Theory and Computer Simulation vs. Experiment Nov 28-30, 2000, Boston, Massachusetts, U.S.A. >Superelastic Deformation of Adaptive Nano-Composites
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Superelastic Deformation of Adaptive Nano-Composites

机译：自适应纳米复合材料的超弹性变形

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摘要

An adaptive composite containing a shape memory alloy as an active component is the subject of the paper. The elastically heterogeneous nano-composite containing ultra-thin layers of a passive material and thin layers of an active material is investigated in this paper. The superelastic modulus of the composite depends on the fraction of the active layer and can be negative if relative thickness of the active layer exceeds some critical value depending on the ratio between the elastic moduli of the layers and the characteristics of transformation. The negative superelastic modulus corresponds to the thermodynamic instability of superelastic deformation and results in stress-strain hysteresis. The relation between the elastic properties of the composite's components and relative thickness of the layers, which enable to stabilize the superelastic deformation, is obtained.
机译：包含形状记忆合金作为活性成分的自适应复合材料是本文的主题。本文研究了一种弹性非均质纳米复合材料，该复合材料包含超薄层的无源材料和薄层的活性材料。复合材料的超弹性模量取决于活性层的比例，并且如果活性层的相对厚度超过某个临界值（取决于层的弹性模量与转化特性之间的比率），则该复合物的超弹性模量可以为负。负超弹性模量对应于超弹性变形的热力学不稳定性，并导致应力应变滞后。获得了复合材料组分的弹性性能与层的相对厚度之间的关系，该关系能够稳定超弹性变形。

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