[1]陈跃华,靳国永,刘志刚,等.带倾斜薄板的梯形声场建模及其振声特性分析[J].哈尔滨工程大学学报,2018,39(07):1186-1190.[doi:10.11990/jheu.201703055]
 CHEN Yuehua,JIN Guoyong,LIU Zhigang,et al.Modeling of a trapezoidal sound field covered by an inclined panel and its vibro-acoustic analysis[J].hebgcdxxb,2018,39(07):1186-1190.[doi:10.11990/jheu.201703055]
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带倾斜薄板的梯形声场建模及其振声特性分析(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
39
期数:
2018年07期
页码:
1186-1190
栏目:
出版日期:
2018-07-05

文章信息/Info

Title:
Modeling of a trapezoidal sound field covered by an inclined panel and its vibro-acoustic analysis
作者:
陈跃华12 靳国永2 刘志刚2 王延召3
1. 宁波大学 海运学院, 浙江 宁波 315211;
2. 哈尔滨工程大学 动力与能源工程学院, 黑龙江 哈尔滨 150001;
3. 中国电力科学研究院 电网环境保护国家重点实验室, 湖北 武汉 430074
Author(s):
CHEN Yuehua12 JIN Guoyong2 LIU Zhigang2 WANG Yanzhao3
1. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China;
2. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China;
3. State Key Laboratory for Environmental Protection of Power Grid, China Electric Power Research Institute, Wuhan 430074, China
关键词:
梯形声场非规则声场Chebyshev级数变分法振声特性结构-声耦合
分类号:
TU311.3
DOI:
10.11990/jheu.201703055
文献标志码:
A
摘要:
针对带倾斜薄板的梯形声场声学建模问题,提出了一种基于Chebyshev-变分原理的非规则声场-结构耦合系统建模方法,建立了弹性边界约束下倾斜薄板-梯形封闭声场耦合模型。将结构位移和声场声压分别表示成多重Chebyshev级数形式,按照利兹方法分别求解结构和声场的拉格朗日泛函,得到耦合系统的特征方程并求得系统的固有频率和模态。与有限元结果的对比验证了本文方法的正确性,并就结构边界条件及声场倾斜角度对耦合系统固有频率的影响进行了分析。分析结果表明:倾斜角的存在增强了声场模态的不规则程度,倾角的增大使得耦合系统板控频率依次递减,而腔控频率的变化趋于复杂;薄板倾斜边界约束的释放使得耦合系统各阶固有频率显著减小。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-03-16。
基金项目:国家自然科学基金项目(51505237);宁波市自然科学基金项目(2017A610081);宁波大学王宽诚幸福基金资助.
作者简介:陈跃华(1986-),男,讲师,博士研究生;刘志刚(1956-),男,教授,博士生导师.
通讯作者:陈跃华,E-mail:chenyuehua@hrbeu.edu.cn
更新日期/Last Update: 2018-07-07