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A single-walled carbon nanotube reinforced 1-3 piezoelectric composite for active control of smart structures

机译：用于智能结构主动控制的单壁碳纳米管增强1-3压电复合材料

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摘要

We propose a new 1-3 piezoelectric composite comprised of armchair single-walled carbon nanotubes imbedded in a piezoceramic matrix which we call a NRPEC (nanotube reinforced 1-3 piezoelectric composite). Values of effective piezoelectric and elastic moduli of the NRPEC determined through a micromechanical analysis are found to be significantly higher than those of the 1-3 piezoelectric composite comprised of piezoelectric fibers imbedded in an epoxy matrix. The performance of the NPREC as a constraining layer in an active constrained layer damping (ACLD) treatment of a laminated composite beam has been studied by the finite element method. Both in-plane and out-of-plane actuations by the constraining layer of the ACLD treatment have been considered, and its length has been optimized by implementing a controllability criterion. The computed controllability measure and the frequency response reveal that the proposed constraining layer performs better than the 1-3 piezoelectric/epoxy composite layer.
机译：我们提出了一种新的1-3压电复合材料，该复合材料由嵌在压电陶瓷基质中的扶手椅单壁碳纳米管组成，我们将其称为NRPEC（纳米管增强1-3压电复合材料）。通过微机械分析确定的NRPEC的有效压电模量和弹性模量被发现显着高于由嵌入压电基体中的压电纤维组成的1-3压电复合物的值。通过有限元方法研究了NPREC作为层合复合梁主动约束层阻尼（ACLD）处理中的约束层的性能。已经考虑了ACLD治疗的约束层的平面内和平面外致动，并且其长度已经通过实施可控性标准进行了优化。计算的可控性度量和频率响应表明，所提出的约束层的性能优于1-3压电/环氧树脂复合层。

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