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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >DESIGN OPTIMIZATION OF A PIEZOELCTRIC FIBER ACTUATOR WITH A NATURAL CURVATURE
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DESIGN OPTIMIZATION OF A PIEZOELCTRIC FIBER ACTUATOR WITH A NATURAL CURVATURE

机译：具有自然曲率的压电纤维执行器的设计优化

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摘要

Piezoelectric Fiber Composite with Interdigitated Electrodes (PFCIDE) was previously introduced as an alternative to monolithic wafers with conventional electrodes for applications of structural actuation. This paper is an investigation into the performance improvement of piezoelectric fiber composite actuators by optimizing the stacking sequence and changing the matrix material. This paper presents the numerical optimization of a piezoelectric fiber/piezoelectric matrix composite actuator with IDE (PFPMIDE). Various concepts from different backgrounds, including three-dimensional linear elastic and dielectric theories, have been incorporated into the present linear piezoelectric model. To see the structural responses of the actuator integrated with the PFPMIDE, three-dimensional finite element formulations were derived. Numerical analysis shows larger center displacement of the curved actuator with the PFPMIDE due to optimization of the piezoelectric fiber angles. This paper presents the concept of a curved actuator that occurs naturally via thermal residual stress during the curing process, as well as the optimization of the maximum curved actuator displacement, which is accomplished using the Davidon-Fletcher-Powell (DFP) method.
机译：带有交叉指状电极的压电纤维复合材料（PFCIDE）先前被引入作为具有传统电极的整体式晶片的替代品，用于结构驱动应用。本文通过优化堆叠顺序和更换基体材料，研究了压电纤维复合致动器的性能改进。本文介绍了使用IDE（PFPMIDE）的压电纤维/压电矩阵复合执行器的数值优化。来自不同背景的各种概念，包括三维线性弹性和介电理论，已被并入本线性压电模型中。为了查看与PFPMIDE集成的执行器的结构响应，推导了三维有限元公式。数值分析显示，由于压电纤维角度的优化，带有PFPMIDE的弯曲执行器的中心位移更大。本文介绍了弯曲致动器的概念，该概念通过固化过程中的热残余应力自然产生，并且通过使用Davidon-Fletcher-Powell（DFP）方法实现了最大弯曲致动器位移的优化。

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