Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Estimation of Vibrational Power Supplied From Vibration Source to Supporting Structure

진동원으로부터 지지구조물에 전달되는 진동 파워의 추정방법

  • 김재철 (한국철도기술연구원 차량연구부 차체연구실) ;
  • 이종원 (중앙대학교 공과대학 기계공학과)
  • Published : 1998.04.01
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Abstract

This paper proposes a method for estimating the vibrational power supplied by a machine that generates excitation force to its supporting structure via the coupling points. The basis of the method is that the vibrational power can be calculated using the mechanical impedance and the velocity at the coupling points on the supporting structure. First, a method is described to estimate the mobilities at the coupling points when the machine is not separable from the supporting structure, then the vibrational power is calculated using the estimated mobilities and measured velocities at the coupling points. The mobilities are estimated from the result of impulsive testing of the coupled structure. The method is investigated using an experimental model. The estimated and measured values of the mobilities and the vibrational power are compared. It is shown that the estimated values agree well with the measured values.

Keywords

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