双周期加筋微穿孔板的振动响应及声透射的研究
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发表时间：2012-01-01
发表刊物：固体力学学报
所属单位：机械工程学院
期号：4
页面范围：415-422
ISSN号：0254-7805
摘要：A semi-analytical method to estimate the vibration response and sound transmission of an infinite micro-perforated plate, stiffened by two periodic sets of orthogonal beams, is proposed in this paper. The plate is submerged in water fluid and excited by a plane wave at arbitrary angle of incidence. Based on the velocity boundary condition and acoustic impedance of the micro-perforated plate, the equation of the vibration response of the studied structure is established, which is then expressed in terms of an infinite set of space harmonic amplitudes using the Fourier transforms and space harmonic method. After solving these space harmonic amplitudes numerically, the vibration response and sound transmission coefficient of the perforated plate in the physical space are finally obtained by employing the Fourier inverse transform. Comparisons with sound pressure results of the unstiffened perforated plate of Takahashi illustrate the validity of the proposed approach. In numerical examples, effects of the perforation ratio and periodic beams on the vibration response and acoustic transmission coefficient are investigated.
备注：新增回溯数据
发表时间：2012-01-01