| SOUND RADIATION FROM PLATES ON ELASTIC FOUNDATION UNDER ACTION OF MOVING LINE FORCES |
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| 作者姓名： | 彭宏 |
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| 作者单位： | Mechanical and |
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| 摘 要： | An analysis is made of the problem of sound radiation from infinite one-dimensional plateson elastic foundation, when the plates are subjected to the action of harmonic line forces movingat subsonic speeds (M < 1). The expressions of nondimensional sound power are formulated andthe asymptotic forms of sound power in the low frequency regions are derived. The radiatedsound power is shown as a function of the stiffness of elastic foundation, in terms of stiffness fac-torψ, the moving speed of line force, in terms of Math number M, and the frequency, in termsof wavenumber ratio γ . The effects of the parameter ψ in conjunction with the parameters Mand γ on the radiated sound power level and the phenomenon of coincidence radiation are alsoinvestigated in detail.
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SOUND RADIATION FROM PLATES ON ELASTIC FOUNDATION UNDER ACTION OF MOVING LINE FORCES |
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| Peng Hong Mechanical and Aerospace Engineering.SOUND RADIATION FROM PLATES ON ELASTIC FOUNDATION UNDER ACTION OF MOVING LINE FORCES[J].Journal of Donghua University,1989(1). |
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| Authors: | Peng Hong Mechanical and Aerospace Engineering |
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| Institution: | Peng Hong Mechanical and Aerospace Engineering Department North Carolina State University |
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| Abstract: | |
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| Keywords: | infinite dimensional plates (structure) elastic foundation mach number stiffness resonance frequency coincidence phenomenon moving harmonic line force radiated sound power |
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