基于声子晶体的层叠式方柱型减振结构设计  

Vibration reduction structure design with stacked square columns based on phononic crystal

作　　者：黄佳[1] 尹进[1] 张昭[1] 张洪武[1] 

机构地区：[1]大连理工大学工程力学系工业装备结构分析国家重点实验室,辽宁大连116024

出　　处：《计算机辅助工程》2015年第2期53-58,75,共7页Computer Aided Engineering

基　　金：国家自然科学基金(11172057);国家重点基础研究发展计划("九七三"计划)(2011CB013401);国家高技术研究发展计划("八六三"计划)(2012AA050901);中央高校基本科研业务费专项资金;新世纪优秀人才支持计划

摘　　要：基于声子晶体特性提出一种层叠式方柱型声子晶体单胞结构,通过冲击响应谱分析和随机振动分析考察其周期性结构减振特性,并与相应非周期结构对比.计算结果表明该声子晶体周期性结构对于冲击载荷和随机振动载荷均有较好的减振特性.在三组分材料参数中影响单胞带隙特性的主要因素是外层材料密度和中间层材料弹性模量.声子晶体结构的减振效果随周期数的增加而愈加明显.组分材料力学性能参数和周期型结构周期数是声子晶体结构减振设计的主要因素.A phononic crystal unit cell structure with stacked square columns is designed on the basis of the phononic crystal characteristics. The vibration reduction characteristics of the periodic structure are investigated through the shock response spectrum analysis and the random vibration analysis and compared with that of the corresponding non-periodic structure. The results show that the periodic structure of phononic crystal demonstrates better vibration reduction characteristics in the shock load and random vibration load problems. In the parameters of 3-components material,the density of the material in the outer layer and the elastic modulus of the material in the middle layer are the main factors that affect the band gap of unit cell. The vibration reduction of phononic crystal structure is obviously increased with the increase of the periodic numbers. The mechanical performance parameters of each component material and the periodic numbers of periodic structure are the main factors for the vibration reduction design of phononic crystal structure.

关 键 词：声子晶体 单胞结构 减振设计 隔振材料 低频带隙 

分 类 号：O735[理学—晶体学]