http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
비비례 진동감쇠를 갖는 선형 동역학계의 스펙트럴 해석법
조주용(Cho Jooyong),김성환(Kim Sunghwan),이우식(Lee Usik) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper introduces a fast Fourier transform (FFT)-based spectral analysis method for the transient responses as well as the steady-state responses of linear dynamic systems with non-proportional damping. The force vibration of a non-proportionally damped three-DOF system is considered as the illustrative numerical example. The proposed spectral analysis method is evaluated by comparing with the numerical solution obtained by the Runge-Kutta method.
임의의 초기조건을 갖는 연속체계에 대한 스펙트럴 요소해석
조주용(Jooyong Cho),이우식(Usik Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
In this paper, a fast Fourier transforms (FFT)-based spectral element method (SEM) is proposed for the dynamic systems subjected to the non-zero arbitrary initial conditions. To evaluate the proposed SEM, the spectral element model for the simply supported Bernoulli-Euler beam is considered as an example problem. The accuracy of the proposed SEM is evaluated by comparing the dynamic responses obtained by SEM with the exact theoretical solutions.
구조감쇠가 고려된 스펙트럴요소 모델을 이용한 구조손상규명
김정수(Kim Jungsoo),조주용(Cho Jooyong),이우식(Lee Usik) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
In this paper, a nonlinear structural damage identification algorithm is derived by taking into account the structurally damped spectral element model thinking over a real situation. The structural damage identification analyses are conducted by using the Newton-Raphson method. It is found that, in general Structural Damage Identification by using the Structurally Damped Spectral Element Model provides the same exact damage identification results when compared with the results obtained by the structurally undamped spectral model.