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Calculation method of the radiation impedance of stepped circular plate

He Xi-Ping

Calculation method of the radiation impedance of stepped circular plate

He Xi-Ping
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Publishing process
  • Received Date:  28 July 2009
  • Accepted Date:  20 August 2009
  • Published Online:  15 May 2010

Calculation method of the radiation impedance of stepped circular plate

  • 1. 陕西师范大学应用声学研究所,西安 710062

Abstract: Radiation impedance is an important parameter for evaluation of acoustic conversion efficiency of a sound and vibration system. The high power flexural vibration circular plate with stepped thickness has impartant applications in fluid, especially in air due to its large radiation area. The classical theory has difficulty in calculating the radiation impedance of the stepped circular plate due to the fact that the radiation surface is not coplanar, so the domain of integration is difficult to choose. From the point of view of radiation acoustic power, and based on superposition principle, a method is proposed to calculate the radiation impedance of a stepped circular plate in this work. As an example, calculation of the radiation impedance of a circular plate with one step is given.

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