한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)
- 제3권2호
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- Pages.141-147
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- 2000
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
불규칙적으로 가진되는 동흡진기계의 비선형응답현상
Nonlinear Response Phenomena of a Randomly Excited Vibration Absorber System
- 조덕상 (영남대학교 공업기술연구소)
- Cho, Duk-Sang (Institute of Industrial Technology, Yeungnam Univrsity)
- 투고 : 2000.02.01
- 심사 : 2000.05.20
- 발행 : 2000.05.31
초록
The nonlinear response statistics of an autoparameteric system under broad-band random excitation is investigated. The specific system examined is a vibration absorber system with internal resonance, which is known to be a good model for a variety of engineering systems, including ship motions with nonlinear coupling between pitching and rolling motions. The Fokker-Planck equations is used to generate a general first-order differential equation in the dynamic moment of response coordinates. By means of the Gaussian closure method the dynamic moment equations for the random responses of the system are reduced to a system of autonomous ordinary differential equations. The jump phenomenon was found by Gaussian closure method under random excitation.
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