压电层合结构的动力响应分析+文献综述
关键词 周期性结构 局部化现象 压电材料 MATLAB Guyan减缩法 Kuhar减缩法
毕业论文设计论文外文摘要
Title Dynamic Response Analysis of Piezoelectric Laminated Restructures
Abstract
Conventional passive periodic structures display unique dynamic characteristics which make them act as mechanical filters for wave propagation. Therefore, waves can propagate along the structures only within specific frequency bands which are called the “Pass Bands” and wave propagation is completely blocked within other frequency bands which are called the“ Stop Bands.” with the exception of their unique filtering characteristics, the capability of periodic structures to propagate waves, within the pass bands can be greatly reduced when the ideal periodicity is disrupted resulting in the well-known phenomenon of “Localization.”In this paper,the key point is placed on studying dynamic characteristics and “Localization” of the periodic/aperiodic systems which are simplified as spring-mass systems.For the same structures,The lumped mass method and Consistent mass method are respectively used to establish control equations of the system .The main techniques adopted in this paper are Matlab programming,The transfer matrix method,static transformation super element method(Guyan reduction method),fixed frequency power transform super element method(Kuhar reduction method).
Keywords periodic structure Localization MATLAB Guyan’ reduction method Kuhar reduction method
目 次
1 引言 1
1.1 研究背景及选题意义 1
1.2 国内外研究概况 1
1.3 周期性结构理论 2
1.4 压电材料 2
1.5 MATLAB简介 3
2 周期性结构的建模 4
2.1 一文周期性结构 4
2.2 个体单元的动力方程 5
2.3 通带和阻带的边界 11
2.4 衰减参数。 11
3 主动式和被动式周期性结构的滤波特性 13
3.1 一致质量法和集中质量法的收敛性问题 16
3.2 被动式周期性结构的滤波特性 17
3.3 主动式周期性结构的滤波特性 18
4 主动式周期性结构的局部化特点 24
4.1 概述 27