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《Journal of Shanghai Jiaotong University》 2001-01
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Wave Propagation Characteristics of a Shell of Revolution Using Frequency Wave Number Spectrum Method

JIA Li ping, ZHANG Jian wu, SHU Yong ping (School of Mechanical Eng., Shanghai Jiaotong Univ., Shanghai 200030, China)  
A frequency wave number spectrum method was proposed based upon fast Fourier transform and maximum entropy spectrum principle. The dynamic responses of the tail part of the shell of revolution attached to an underwater vehicle in certain excitations were investigated. The wave propagation characteristics such as numbers, velocities, types and directions of waves in the shell were predicted and behaviors of the structural vibrations were discussed. Furthermore, control of the tail part of the shell was studied and validated in experiment. Effect of reinforced stringers and rings wave propagation of the shell was analyzed and mechanism of vibration depression was discussed by wave propagation theory. It is demonstrated by the numerical results obtained from the frequency wave number spectrum procedure that the reinforcement scheme is quite effective to the control of vibration noise, sound propagation and dyna mic strength of the shell structure.
【CateGory Index】: O327
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【Secondary References】
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1 GONG Da-sheng(Jiangxi University Of Science And Technology,Ganzhou 341000,China);The Summary of Parameters to Effect of Hydrocyclone Performances[J];Gansu Metallurgy;2008-01
2 YU Xiao-bo,SUN San-xiang,QIN Yu-qiang(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China);Numerical Simulation of Velocity Field for Free-flow Cyclone Desander[J];Journal of Luoyang Institute of Science and Technology(Natural Science Edition);2010-03
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