THE USE OF AUXETIC MATERIALS IN SMART STRUCTURES
THE USE OF AUXETIC MATERIALS IN SMART STRUCTURES
复制标题
拉胀材料在智能结构中的使用
DOI：
10.12921/cmst.2004.10.02.147-160
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
G. Stavroulakis
中科院分区：
文献类型：
--
作者：
E. Hadjigeorgiou;G. Stavroulakis
翻译后摘要：本文提出了一种研究的影响，使用拉胀材料的智能结构的设计。以拉胀材料为核心，压电作动器为面层提供控制力，分析了加载条件下夹层梁的形状控制问题。力学模型基于梁的剪切变形理论和压电线性理论。该模型的数值解基于梁理论的超收敛（无锁定）有限元，使用汉密尔顿原理。采用遗传优化方法，确定了压电作动器在经典材料和拉胀材料悬臂梁形状控制中的最优电压。静态问题的相关数值解演示了拉胀材料在梁和相关二维复合弹性结构的变形、形状控制和应力分布中的作用。
Abstract: This paper presents a study of the implications of using auxetic materials in the design of smart structures. By using auxetic materials as core and piezoelectric actuators as face layers to provide control forces, the problem of the shape control of sandwich beams is analyzed under loading conditions. The mechanical model is based on the shear deformable theory for beams and the linear theory of piezoelectricity. The numerical solution of the model is based on superconvergent (locking-free) finite elements for the beam theory, using Hamilton's principle. The optimal voltages of the piezo-actuators for shape control of a cantilever beams with classical and auxetic material are determined by using a genetic optimization procedure. Related numerical solutions of static problems demonstrate the role of auxetic material in the deformation, shape control and stress distribution of the beam and related twodimensional composite elastic structures.