振动加筋板的声辐射性能研究  

The Round Radiation of a Vibrating Rectangular Stiffened Thin Plate

作　　者：任惠娟[1] 李文慧 宋佳乐 孙彤 REN Huijuan;LI Wenhui;SONG Jiale;SUN Tong(Department of Physics and Electronic Engineering,Xianyang Normal University,Xianyang 712000)

机构地区：[1]咸阳师范学院物理与电子工程学院,咸阳712000

出　　处：《现代制造技术与装备》2022年第9期57-59,64,共4页Modern Manufacturing Technology and Equipment

基　　金：陕西省自然科学基础研究计划项目(2021JM-517);咸阳师范学院2022年省级大学生创新创业训练计划项目。

摘　　要：推导点简谐力激励下加筋矩形板的平均声辐射效率计算公式并进行了数值仿真,分析结构参数对加筋板平均辐射效率的影响规律。研究结果表明:在点简谐力激励下,四边简支加筋矩形板的平均辐射效率等于各阶模态辐射效率关于其均方振速的加权平均值;中高频段,加筋矩形板筋条高度越高、筋宽越宽、筋间距越小、材质刚度越大,其平均声辐射效率越大。The formula for calculating the average acoustic radiation efficiency of the reinforced rectangular plate under the point harmonic force excitation is derived and the numerical simulation is carried out to analyze the influence of structural parameters on the average acoustic radiation efficiency of the reinforced rectangular plate. The results show that the average radiation efficiency of the four-sided simply supported stiffened rectangular plate is equal to the weighted average value of the radiation efficiency of each mode with respect to its mean square vibration under the point harmonic excitation. In the middle and high frequency band,the higher the bar height, the wider the bar width, the smaller the bar spacing and the larger the material stiffness of the reinforced rectangular plate, the higher the average acoustic radiation efficiency.

关 键 词：加筋矩形板 正交各向异性板 声辐射效率 

分 类 号：O482[理学—固体物理]