SURFACE PRESSURE AND HARMONIC LOADING ON SHELLS OF REVOLUTION USING AN INTERNAL SOURCE DENSITY METHOD

被引:15
作者
STEPANISHEN, PR [1 ]
CHEN, HW [1 ]
机构
[1] CHUNG SHAN INST SCI & TECHNOL,TSOYING 813,TAIWAN
关键词
D O I
10.1121/1.405219
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
An internal source density method is presented to evaluate the surface pressures and hence the fluid loading on a harmonically vibrating shell of revolution. The normal velocity of the shell is specified to be axisymmetric and harmonic. After expressing the normal velocity of the shell in terms of a modal vector expansion, the radial component of the modal vectors is used to define acoustic modal radiation impedances. In order to evaluate the surface pressures and acoustic radiation impedances, an unknown linear monopole source density is positioned along the axis of the shell. The normal components of the specified modal velocities are subsequently used to determine the monopole source distribution via a set of coupled linear algebraic equations. Extensive numerical results are presented to illustrate the spatial and frequency characteristics of the source density for both spherical and spheroidal shells. Numerical results for the modal acoustic radiation impedances for spherical and spheroidal shells are also presented and discussed.
引用
收藏
页码:2248 / 2259
页数:12
相关论文
共 14 条
[1]  
BURTON AJ, 1963, P R SOC LONDON A, V323, P1626
[2]  
CHEN HW, UNPUB J ACOUST SOC A
[3]   SOUND RADIATION FROM AN ARBITRARY BODY [J].
CHEN, LH ;
SCHWEIKERT, DG .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1963, 35 (10) :1626-+
[4]   SOUND RADIATION FROM VIBRATING SURFACES [J].
CHERTOCK, G .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1964, 36 (07) :1305-&
[6]  
COPLEY LG, 1968, J ACOUST SOC AM, V44, P22
[7]   A BOUNDARY ELEMENT METHOD FOR ACOUSTIC RADIATION VALID FOR ALL WAVENUMBERS [J].
CUNEFARE, KA ;
KOOPMANN, G ;
BROD, K .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1989, 85 (01) :39-48
[8]  
FAHLINE JB, 1991, J ACOUST SOC AM, V90, P2808
[9]  
JUNGER MC, 1986, SOUND STRUCTURES THE
[10]   A METHOD FOR COMPUTING ACOUSTIC FIELDS BASED ON THE PRINCIPLE OF WAVE SUPERPOSITION [J].
KOOPMANN, GH ;
SONG, LM ;
FAHNLINE, JB .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1989, 86 (06) :2433-2438