대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제18권2호
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- Pages.372-379
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- 1994
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- 1225-5963(pISSN)
DOI QR Code
기술함수를 이용한 비선형 결합부를 가진 구조물의 진동해석
Vibration Analysis of Structure with Nonlinear Joint Using Describing Function
초록
In this study, the describing function is adopted to represent nonlinearity in the system equations. The compliance can be obtained by solving nonlinear simultaneous algebraic quations for multi-degrees-of-freedom system with multinonlinearities. When the technique is applied, the nonlinearity of the system can be identified from the compliance which is obtained from the sinusoidal excitation of the system. By employing the describing function in the Building Block Analysis, we can extensively develop the BBA into investigation of the continuous systems with nonlinearities. The evaluated compliance can quantitatively show the effects of nonlinearity such as the transfer of the natural frequency, the variance of the compliance at the natural frequency, and the jump phenomena which occur during sweeping of the excitation frequency.
키워드