具有负泊松比特性的智能磁流变复合结构与减振降噪机理

项目名称： 具有负泊松比特性的智能磁流变复合结构与减振降噪机理

项目编号： No.51303209

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 杨雪

作者单位： 中国人民解放军海军工程大学

项目金额： 25万元

中文摘要： 减振降噪材料的研究和设计是工业及工程噪声控制，特别是国防装备噪声控制及舰船隐身性设计的基础性与关键性技术。设法提高材料的低频减振降噪性能，拓宽材料的减振降噪频带，并同时兼顾吸声和抑制振动等综合性能，一直是减振降噪材料研究和工程应用中的重要课题。本项目创造性地将磁流变弹性体设计成具有负泊松比效应的复合结构，利用磁流变弹性体材料的智能可控特性和负泊松比材料对声振的高效吸收作用，不仅可以提高低频减振降噪性能，拓宽减振降噪频带，而且能够同时实现优良吸声和抑制振动性能，从而提高材料在宽频带范围内的减振降噪性能。首先制备负泊松比磁流变复合结构，并测试其性能，从试验和理论上研究其在不同频率下的声波和振动衰减的规律、根本原因和机理，提出负泊松比磁流变弹性体复合材料减振降噪的新理论，从而为设计和改进不同应用领域的高性能减振降噪材料提供理论依据，具有重要的科学意义和应用指导价值。

中文关键词： 负泊松比；磁流变材料；吸声性能；减振降噪；负泊松比磁流变复合材料

英文摘要： The studies and designs of low vibration and noise material are the basic and crucial technique in noise controlling in the areas of industries and engineering, especially in the national defense equipments of noise controlling, as well as design of warship stealth, which has great significance and scientific value in the prevention of noise pollution and the security of national defense. It has always been the significant issue in researches on low vibration and noise material and the application in engineering to improve the performance of vibration and noise silencing in low frequency and widen its frequency band, as well as other comprehensive properties such as sound absorption and vibration suppression. This project creatively designs the magneorheological composite structure with negative poisson's ratio which can chang the properties as the powering frequency and have the excellent vibration and noise silencing. The composite structure can not only improve the performance of vibration and noise reducing in low frequency and broad frequency band, but also realize the good performance of sound absorption and vibration suppression. First, the magneorheological composite structure with negative poisson's ratio is prepared through special design. Then the magnetic circuit is optimally designed. Composite

英文关键词： negative Poisson’s ratio；Magnetorheological material；sound absorption property；vibration and noise reduction；Magnetorheological composite with negative Poisson