噪声与振动控制Issue(1)：119-122,126,5.DOI:10.3969/j.issn.1006-1335.2015.01.024
复合材料层合板声功率及灵敏度研究
Analysis of Sound Power and Sensitivity of Composite Laminate Plates
摘要
Abstract
The vibration characteristic of a composite laminate plate was studied by using FEM and laminate plate theo-ry, and the sound radiation mode method was used to analyze the structural sound radiation of the plate. Then, the sound radi-ation sensitivity to design parameters was analyzed by using the sound radiation power and its expression was formulated. A four-layer composite plate was used as an example, and the sound power sensitivities to the ply angles and thickness of the plate were investigated. The numerical simulations show that the 45° symmetric ply angle is the best for the laminate plate, and the noise of the plate can be reduced significantly. In addition, the acoustic power reaches the maximum at the fundamen-tal frequency of the laminate plate. Meanwhile, the acoustic power sensitivity has a peak value also at this frequency.关键词
声学/声辐射/声功率灵敏度/层合板Key words
acoustic/sound radiation/sound power sensitivity/laminate plate分类
通用工业技术引用本文复制引用
吴锦武,薛晓理,彭文辉..复合材料层合板声功率及灵敏度研究[J].噪声与振动控制,2015,(1):119-122,126,5.基金项目
国家自然科学基金项目(51265038) （51265038）
