基于一阶剪切变形理论的玻璃纤维增强塑料夹层板模态密度研究

蔡延年; 于洪亮; 闫锦; 廖建彬

doi:10.16411/j.cnki.issn1006-7736.2018.03.015

大连海事大学学报 >

2018 , Vol. 44 >Issue 3: 102 - 107

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.03.015

基于一阶剪切变形理论的玻璃纤维增强塑料夹层板模态密度研究

蔡延年 ,
于洪亮 ,
闫锦 ,
廖建彬

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(1.大连海事大学轮机工程学院，辽宁大连 116026；2.集美大学轮机工程学院，福建厦门 361021)

蔡延年(1989-)，男，博士生，研究方向：船舶噪声预报与控制.

收稿日期: 2018-03-18

修回日期: 2018-05-02

网络出版日期: 2024-06-27

基金资助

福建省海洋渔业厅项目（闽海洋高新[2016]18号）；福建省科技计划项目（2017H0027; 2016H6017）.

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Study of modal density of glass fiber reinforced plastics sandwich plate based on first order shear deformation theory

CAI Yan-nian ,
YU Hong-liang ,
YAN Jin ,
LIAO Jian-bin

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(1. Marine Engineering College, Dalian Maritime University, Dalian 116026, China;2. Marine Engineering College,Jimei University, Xiamen 361021,China）

Received date: 2018-03-18

Revised date: 2018-05-02

Online published: 2024-06-27

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摘要

为提高玻璃纤维增强塑料夹层板宽频带内振声响应特性的计算精度，基于一阶剪切变形理论建立振动控制方程，利用波数空间积分法给出由各向异性薄面板及各向同性夹芯组成的夹层板结构的模态密度解析表达式.通过三通道驱动点导纳实验法对理论模型进行验证分析，讨论了不同设计参数对夹层板模态密度的影响.结果表明：夹层板振动特性在低频段受弯曲刚度控制，高频段面外刚度则是重要影响参数，忽略横向剪切刚度会显著影响夹层板模态密度的估算精度.

关键词： 一阶剪切变形理论; 波数纤维增强塑料夹层板; 模态密度; 波数空间积分法; 驱动点导纳法

本文引用格式

蔡延年 , 于洪亮 , 闫锦 , 廖建彬 . 基于一阶剪切变形理论的玻璃纤维增强塑料夹层板模态密度研究[J]. 大连海事大学学报, 2018 , 44(3) : 102 -107 . DOI: 10.16411/j.cnki.issn1006-7736.2018.03.015

Abstract

In order to improve the computing accuracy of vibro-acoustic properties of glass fiber reinforced plastic sandwich panel in broad band， the vibration control equation was established based on first order shear deformation theory, and an analytical expression for modal density of sandwich plate structures consisting of anisotropic thin coating panels and isotropic sandwich panels was given by using wave number spatial integral method. The mathematical model was verified by using three-channels driving point admittance method. The influences of different design parameters on modal density were discussed systematically. Results indicate that the vibration characteristics of sandwich panel is controlled by bending stiffness for low frequency band, while the outof plane shear stiffness is the important parameter for high frequency band, and the estimation accuracy of modal density could be influenced significantly without considering the transverse shear stiffness.

Key words： first order shear deformation theory; glass fiber reinforced plastics sandwich plate; modal density; wavenumber space integration method; driving point admittance method

参考文献

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