Estimation and Measurement of the Sound Power Radiated from a Circular Plate with a Solid Shaft and a Solid Cylinder

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概要

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• The overall aim of this research is to establish an effective method for accurately estimating the airborne noise power radiating from the gear blank of aircraft gears.For this purpose, the estimation theory of sound power radiated from a circular plate with a solid shaft and a solid cylinder, which is a simple model of the gear blank of an aircraft gear, has been described.The forced vibration of the circular plate with a solid shaft and a solid cylinder was solved by assuming that the displacement of forced vibration is equal to the linear sum of the eigenfunctions of the displacements of the circular part and the cylinder part.Using the obtained result, the equations for calculating the frequency spectra of three important parameters-the radiation loss factor, driving point mobility, and total loss factor of the circular plate with a solid shaft and a solid cylinder, were derived.Calculating the frequency responses of the three parameters and measuring the spectrum of the excitation force, the sound power, when the circular plate was subjected to the axial and three-dimensionally excitations, were estimated, and compared with the measured frequency responses of sound radiation power obtained by means of the sound intensity method.The estimated freqyency spectra of sound radiation power coincided with the measured values.The derived estimation theory and the associated formulae are valid, consequently.

• 一般社団法人日本機械学会の論文
• 1998-03-15

著者

• Iwatsuki Nobuyuki

  Department Of Mechanical And Intelligent Systems Engineering Faculty Of Engineering Tokyo Institute

• Hayashi Iwao

  Department Of Mechanical And Intelligent Systems Engineering Faculty Of Engineering Tokyo Institute

• Heng KANG

  Advanced Analytical Engineering Department, Drive Train Division, Component & System Development Cen

• Heng Kang

  Advanced Analytical Engineering Department Drive Train Division Component & System Development C

• Kang Heng

  Advanced Analytical Engineering Department, Drive Train Division, Component & System Development Center, Toyota Motor Corporation

関連論文

• MPT-02 COMPENSATION OF DYNAMIC DRIVING TORQUE OF PLANAR LINK MECHANISMS(MECHANICAL MOTION AND POWER TRANSMISSION SYSTEMS)
• Estimation and Measurement of the Sound Power Radiated from a Circular Plate with a Solid Shaft and a Solid Cylinder
• The Gravity Pendulum Method for Precise Measurement of the Tooth Surface Friction Coefficient of a Pair of Mating Gears
• The Ideal Tooth Profiles of Conical-External and -Internal Gears Meshing with Cylindrical-Involute Gears over the Entire Tooth Width
• Sound Generating Mechanism of Frog Shaped Guiros

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