周期性阻振质量船体板弯曲振动带隙研究  

Flexural vibration band gap characteristics of ship plates with periodic vibration blocking masses

作　　者：李应刚[1,2] 周雷 朱凌[2] 张超[3] 郭开岭[2] LI Ying-gang;ZHOU Lei;ZHU Ling;ZHANG Chao;GUO Kai-ling(Key Laboratory of High Performance Ship Technology of Ministry of Education,Wuhan University of Technology,Wuhan 430063,China;School of Transportation,Wuhan University of Technology,Wuhan 430063,China;Hubei Agricultural Machinery Engineering Research and Design Institute,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]武汉理工大学高性能舰船技术教育部重点实验室,武汉430063 [2]武汉理工大学交通学院,武汉430063 [3]湖北工业大学农机工程研究设计院,武汉430068

出　　处：《船舶力学》2019年第11期1369-1375,共7页Journal of Ship Mechanics

基　　金：国家自然科学基金项目(11602182)

摘　　要：文章采用有限元法结合布洛赫周期性边界条件,计算了周期性阻振质量船体板的能带结构、本征位移场以及频率响应函数,研究了周期性阻振质量船体板的弯曲振动带隙特性,并进行了试验验证。研究结果表明,阻振质量的引入导致周期性阻振质量船体板的能带结构中弯曲振动带隙的产生,引起了弯曲振动波衰减和振动抑制,通过调节阻振质量的几何参数可以实现船体板弯曲振动带隙的人工主动调控,为船舶与海洋工程结构的振动与噪声控制提供了新的思路。In this paper,the flexural wave propagation and band gaps characteristics of ship plates with peri odic vibration blocking masses were numerically investigated.The dispersion relations,the displacement fields of the eigenmodes and the power transmission spectra were calculated by using the finite element meth od combining with the Bloch theorem.The experimental validations were further conducted to verify the nu merical results.Results showed that,with the introduction of periodic vibration blocking masses,the band structure of the ship plates can yield flexural vibration band gaps,resulting in the flexural wave attenuation and vibration mitigation.The flexural wave band gaps can be significantly modulated by the geometrical pa rameters such as the height and width of blocking mass.These properties of flexural wave band gaps in the ship plates can potentially be applied in the vibration and sound control of ship and offshore structures.

关 键 词：船体板 周期性阻振质量 弯曲振动 带隙 

分 类 号：TB535.1[理学—物理]