通过PVDF测量简支梁声辐射模态伴随系数  

The Measuring of Weight Coefficient of Sound Radiation from Simply Supported Beams by Using PVDF

作　　者：顾俭[1] 姜哲[1] 

机构地区：[1]江苏理工大学汽车与交通工程学院,江苏镇江212013

出　　处：《江苏理工大学学报（自然科学版）》2001年第6期1-5,共5页Journal of Jiangsu University of Science and Technology(Natural Science)

基　　金：国家自然科学基金资助项目 (E5 0 0 75 0 36 )

摘　　要：PVDF(Polyvinylidenefluoride,聚偏氟乙烯 )是一种新型的压电高分子材料 ,它具有独特的压电效应 ,近年来受到人们广泛关注 笔者在声辐射模态理论及一维分布式压电传感器输出电压方程基础上 ,利用PVDF独特的积分特性 ,以简支梁为例 ,通过设计PVDF压电薄膜传感器的形状 ,测量了简支梁第一、二阶声辐射模态伴随系数As a new material of piezoelectricity macromolecule, PVDF(Polyvinylidene fluoride),which has special characteristics of piezoelectric effects,is attracting more and more attention in various fields.Based on the theory of sound radiation and the one dimensional model sensors equation as well as the integral characteristic of PVDF, an experiment is conducted with the simply supported beam as the subject to measure mode 1 and mode 2 weight coefficients of sound radiation by shaping the PVDF sensor. And a comparative analysis is given to the data of the experiment through simulation.

关 键 词：简支梁 声辐射模态 伴随系数 压电式传感器 PVDF 聚偏氟乙烯 测量 振动 控制策略 

分 类 号：TB523[理学—物理] TB535[理学—声学]