Structural acoustic optimization of a composite cylindrical shell using FEM/BEM

被引:22
作者
Johnson, WM [1 ]
Cunefare, KA [1 ]
机构
[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
来源
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 2002年 / 124卷 / 03期
关键词
D O I
10.1115/1.1473829
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
A finite element/boundary element design tool is used to perform a structural acoustic optimization on all eight-ply graphite epoxy cylindrical shell. The shell is subject to two external monopole sources vibrating at a single frequency. The goal of the optimization is the minimization of the sum of the squared pressure amplitudes within the enclosed acoustic cavity The play angles serve as the design variables in optimization. The optimal design was obtained after 15 iterations with a 2 dB reduction in the average interior sound pressure level. The ply angle orientation shifted from all initially symmetric lay-up to an unsymmetric lay-up in the final design.
引用
收藏
页码:410 / 413
页数:4
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