Morphing and shape control using unsymmetrical composites
Morphing and shape control using unsymmetrical composites
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DOI：
10.1177/1045389x07064459
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发表时间：
2007-01-01
影响因子：
2.7
通讯作者：
Salo, A. I. T.
中科院分区：
文献类型：
--
作者：
Bowen, C. R.;Butler, R.;Salo, A. I. T.
非对称碳纤维/环氧树脂复合材料与粘结压电致动器的形状或变形，复合材料结构的一种手段进行了研究。悬臂梁和无支撑的层压结构检查沿着与他们的应变（从压电致动器）和施加的机械载荷的响应，特别强调的形状/偏转的表征，外部施加的机械载荷和逆转或促进这些材料从一个稳定状态到另一个通过管理单元的方法的影响。已经确定了用于这种结构的各种形状改变/致动模式，即，（i）通过使用压电致动来维持恒定稳定状态的可逆致动，（ii）通过使用压电致动的不可逆快速通过来增加形状改变的程度，以及（iii）使用组合的压电致动和外部施加的负载的可逆快速通过。
Unsymmetrical carbon fiber/epoxy composites with bonded piezoelectric actuators are investigated as a means to shape or morph, the composite structures. Both a cantilever and unsupported laminate structure are examined along with their response to applied strains (from piezoelectric actuators) and applied mechanical load; with particular emphasis on the characterization of shape/deflection, the influence of externally applied mechanical loads and methods of reversing or promoting snap-through of these materials from one stable state to another. A variety of shape change/actuation modes for such structures have been identified namely, (i) reversible actuation by maintaining a constant stable state using piezoelectric actuation, (ii) an increased degree of shape change by irreversible snap-through using piezoelectric actuation and (iii) reversible snap-through using combined piezoelectric actuation and an externally applied load.