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Spectral Analysis Method for the Discrete Systems with Initial Conditions

초기조건을 갖는 이산계의 과도응답에 대한 스펙트럴해석법

  • 김성환 (인하대학교 대학원 기계공학과) ;
  • 조주용 (인하대학교 대학원 기계공학과) ;
  • 이우식 (인하대학교 기계공학과)
  • Published : 2005.04.01

Abstract

This paper introduces a fast Fourier transform (FFT)-based spectral dynamic analysis method for the transient responses as well as the steady-state responses of the linear discrete systems subject to non-zero initial conditions. The forced vibration of a viscously damped three-DOF system is considered as the illustrative numerical example. The proposed spectral analysis method is evaluated by comparing its results with the exact analytical solutions and the numerical solutions obtained by the Runge-Kutta method.

Keywords

Spectral Analysis Method;Fast fourier transform;Dynamic Response;Linear Discrete System

References

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