An application of fourier spectral analysis to the analysis of linear dynamic systems coupled with nonlinear elements

비선형 요소가 결합된 선형역학시스템의 해석에의 Fourier 스펙트럼 해석기법의 응용

The Fourier Spectral Analysis has been widely utilized in the analysis of linear dynamic systems. However, it may not be generaly extended to analyze nonlinear systems. In this paper, a linear underlying dynamic structure coupled with nonlinear elements is analyzed by using newly derived equations of motion after the linear dynamic structure is characterized by the Fourier spectral analysis.