대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2008년도 추계학술대회A
- /
- Pages.785-790
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- 2008
확률론 방법에 의한 불규칙 진동 비선형 계의 준선형화
Quasi-linearization of non-linear systems under random vibration by probablistic method
-
이신영
(군산대학교 기계자동차공학부) ;
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Lee, Sin-Young
;
- Cai, G.Q. (Dept. of Mechanical Eng., Florida Atlantic Univ.)
- 발행 : 2008.11.05
초록
Vibration of a non-linear system under random parametric excitations was evaluated by probablistic methods. The non-linear characteristic terms of a system were quasi-linearized and excitation terms were remained as they were given. An analytical method where the square mean of error was minimized was ysed. An alternative method was an energy method where the damping energy and rstoring energy of the linearized system were equalized to those of the original non-linear system. The numerical results were compared with those obtained by Monte Carlo simulation. The comparison showed the results obtained by Monte Carlo simulation located between those by the analytical method and those by the energy method.
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