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首页> 外文会议>Twelfth International Conference on Adaptive Structures and Technologies, Oct 15-17, 2001, University of Maryland >ELECTRO-MECHANICAL COUPLED MODELING AND OPTIMIZATION OF PASSIVELY DAMPED ADAPTIVE COMPOSITE STRUCTURES
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ELECTRO-MECHANICAL COUPLED MODELING AND OPTIMIZATION OF PASSIVELY DAMPED ADAPTIVE COMPOSITE STRUCTURES

机译：被动阻尼自适应复合结构的机电耦合建模与优化

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摘要

A smart structural model has been developed to analytically determine the response of arbitrary structures with piezoelectric materials and attached electrical circuitry. The theory simultaneously models both the structural and the electrical components, and the complex state of strain that may exist in the piezoelectric patches, thereby providing accurate mechanical and electrical response. The model is used to optimally determine both the placement of piezoelectric actuators and parameters describing associated electrical components in a passively damped structure. A robust multi-objective optimization procedure is developed to design the passive system for simultaneous damping of several critical modes of interest. The influence of stacking sequence in augmenting passive damping can also be examined by including ply orientations as design variables. Since the optimization problem now involves both continuous and discrete design variables, a hybrid optimization technique is used that allows the inclusion of both types of design variables. Also, since multiple design objectives are introduced, the Kreisselmeier-Steinhauser function approach is used allowing the multiple and conflicting design objectives and constraints to be combined into a single unconstrained function.
机译：已经开发出一种智能的结构模型来分析确定具有压电材料和附加电路的任意结构的响应。该理论同时对结构和电气组件以及压电贴片中可能存在的应变的复杂状态进行建模，从而提供准确的机械和电气响应。该模型用于最优地确定压电致动器的位置和描述被动阻尼结构中相关电气组件的参数。开发了鲁棒的多目标优化程序来设计被动阻尼系统，以便同时衰减几个关键的感兴趣模式。也可以通过将层定向包括为设计变量来检查堆叠顺序在增加被动阻尼中的影响。由于优化问题现在涉及连续和离散设计变量，因此使用了一种混合优化技术，该技术允许同时包含两种类型的设计变量。同样，由于引入了多个设计目标，因此使用了Kreisselmeier-Steinhauser函数方法，可以将多个相互冲突的设计目标和约束组合为一个不受约束的函数。

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