华中科技大学学报（自然科学版）2017，Vol.42Issue(2)：1-6,6.DOI:10.13245/j.hust.170201
声吸收边界附近圆柱壳自振特性分析
Natural vibration characteristics of cylindrical shell near sound-absorbing boundary
摘要
Abstract
One method was proposed for free vibration of a submerged cylindrical shell near a sound-absorbing boundary with combination of the wave propagation approach and image method.The accu-racy of present method was validated through comparison with the FEM.Numerical results show that the presence of sound-absorbing boundary will result in obvious reduction of coupled modal frequen-cies.And the effect of sound-absorbing boundary on coupled modal frequency will be reduced when the shell is far away.When the shell is more than 5 time of shell radius away,the influence of sound-absorbing boundary can be neglected.When the shell close to the sound-absorbing boundary,the acoustic reflection coefficient makes big difference on coupled modal frequencies.关键词
声吸收边界/圆柱壳/自由振动/镜像原理/波传播法Key words
sound-absorbing boundary/cylindrical shell/free vibration/image method/wave propa-gation approach分类
交通工程引用本文复制引用
李天匀,王鹏,朱翔,牛清勇..声吸收边界附近圆柱壳自振特性分析[J].华中科技大学学报（自然科学版）,2017,42(2):1-6,6.基金项目
国家自然科学基金资助项目(51379083,51479079,51579109) （51379083,51479079,51579109）
高等学校博士学科点专项科研基金资助项目(20120142110051) （20120142110051）
