스펙트럴요소법을 이용한 이동하중이 작용하는 등방성 Kirchhoff평판의 진동해석

초록

This study presents the vibration analysis of isotropic Kirchhoff plate subjected to a moving point force based on the spectral element method (SEM). From the discrete Fourier transform theory, moving point force in time domain is transformed to a series of stationary point force in frequency domain. By superposing the individual dynamic responses due to each stationary point force, desired dynamic responses subjected to a moving point force can be obtained. By comparing with other techniques such as integral transform method and finite element method, the accuracy and efficiency of present method is verified.