A theoretical model has been studied to describe the sound radiation analysis for structure vibration noise of tire under the action of random moving line forces. When a tire is analyzed, it had been modeled as curved beams with distributed springs and dashpots that 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 curved beam material and elastic foundation are assumed to be lossless Bernoulli-Euler beam theory including a tension force(T), damping coefficient (C) and stiffness of foundation(κ2) will be employed. The expression for sound power is integrated numerically and the results examined as a function of Mach number(M), wave-number ratio(γ) and stiffness factor(ψ). The experimental investigation for structure vibration noise of vehicle 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. Results strongly suggest that operation condition in the tire material properties and design factors of the tire govern the sound power and sound radiation characteristics.
목차
ABSTRACT 1. Introduction 2. Structure Vibration Model of Vehicle Tire 3. Numerical Analysis 4. Experimental Instrument and Method 5. Discussion 5.1 The venfication of structural vibration model 5.2 The verification of structural vibration model 6. Conclusions References
키워드
1/3 옥타브밴드 주파수 분석등가소음레벨음향방사불규칙 분포이동하중One-third octave band frequency analysisEquivalent noise levelSound RadiationRandom Moving Line Forces
저자
Jae-Pil Kim [ 김재필 | Department of Aircraft Engineering, Kyungwoon University ]
Byoung-Sam Kim [ 김병삼 | Department of Smart Automotive Engineering, Wonkwang University ]
Corresponding Author