Sound Radiation Analysis for Structural Vibration Noise Control of Tire Under the Action of Random Moving Line Forces

불규칙 이동분포하중을 받는 타이어의 구조 진동 소음 제어를 위한 음향방사 해석

  • 김병삼 (순천공업전문대학, 환경공업과) ;
  • 이성철 (전북대학교 기계공학과 대학원)
  • Published : 1995.06.01

Abstract

A theoretical model has been studied to describe the sound radiation analysis for structural vibration noise control of tire under the action of random moving line forces. When a tire is analyzed, it has been modeled as a curved beam with distributed springs and dash-pots which represent the radial, tangential stiffness and damping of tire, respectively. The reaction due to fluid loading on the vibratory response of the curved beam is taken into account. The curved beam is assumed to occupy the plane y = 0 and to be axially infinite. The material of curved beam and elastic foundation are assumed to be lossless, and governed by the law of Bernoulli-Euler beam theory. The expression for sound power is integrated numerically and its results examined as a function of Mach number(M), wavenumber ratio(.gamma.) and stiffness factor(.PSI.). The experimental investigation for structural vibration noise of tire under the action of random moving line forces has been made. Based on the STSF(Spatial Transformation of Sound Field) techniques, the sound power and sound radiation are measured. The experimental results show that operating condition, material properties and design factors of the tire have a great effect on the sound power and sound radiation characteristics.

Keywords

References

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