CAJ | 학술논문

气囊隔振系统通常被广泛应用于对舰船或潜艇上的大型旋转机械实施隔振控制。然而，船舶在航行时，隔振系统有时会产生过大的位移，会呈现出一些非线性动力学现象。文中以带间隙的线性弹簧限位器的隔振系统为研究对象，考虑了垂直和偏转两个方向的运动，基于分析力学的相关理论建立了具有旋转偏心质量的气囊隔振系统非线性动力学模型，并且采用数值方法重点分析了该系统的非线性动力学行为以及参数变化对系统动力学特性的影响。结果显示在低转速时，系统呈现出准周期运动特性；随着转速的增大，系统运动中出现混沌、周期3、5、7及准周期运动等一系列的非线性动力学现象。
기낭격진계통통상피엄범응용우대함선혹잠정상적대형선전궤계실시격진공제。연이，선박재항행시，격진계통유시회산생과대적위이，회정현출일사비선성동역학현상。문중이대간극적선성탄황한위기적격진계통위연구대상，고필료수직화편전량개방향적운동，기우분석역학적상관이론건립료구유선전편심질량적기낭격진계통비선성동역학모형，병차채용수치방법중점분석료해계통적비선성동역학행위이급삼수변화대계통동역학특성적영향。결과현시재저전속시，계통정현출준주기운동특성；수착전속적증대，계통운동중출현혼돈、주기3、5、7급준주기운동등일계렬적비선성동역학현상。
The air-bag vibration isolation system is widely used for suppressing the vibration of rotating machinery of a surface ship or submarine. However, when the ship is moving, this system may produce a large displacement and a nonlinear motion. In this paper, the motions of the air-bag vibration isolation sys-tem with a clearance are considered in the vertical and angular directions, and its mathematic model is de-veloped based on the theory of analytical mechanics. Then its nonlinear dynamical behaviors are analyzed mainly by the numerical method, as well as the attention is paid to parametric effects of dynamic character-istics. The results show that there exists a quasi periodic motion at low speeds, and with increasing the ro-tating speed, the responses present a series of nonlinear phenomena such as periods 3, 5, 7, quasi periodic motion and the chaotic oscillations, etc.