CAJ | 학술논문

为了研究子系统参数对双层隔振主系统固有特性的影响规律，将系统抽象为3自由度动力学模型，推导了系统动力放大系数（振幅比）和无量纲固有频率（固有频率比）解析式以及振型和解耦度与子系统质量比和刚度比的关系式，进而研究了子系统质量比和固有频率比对双层隔振主系统固有特性（固有频率、解耦度）的影响规律。在此基础上，针对含多个子系统的内燃动车动力包双层隔振系统，仿真计算了空冷子系统的质量和刚度对双层隔振12自由度主系统固有特性的影响规律。研究结果对双层隔振系统子系统的设计具有指导意义。
위료연구자계통삼수대쌍층격진주계통고유특성적영향규률，장계통추상위3자유도동역학모형，추도료계통동력방대계수（진폭비）화무량강고유빈솔（고유빈솔비）해석식이급진형화해우도여자계통질량비화강도비적관계식，진이연구료자계통질량비화고유빈솔비대쌍층격진주계통고유특성（고유빈솔、해우도）적영향규률。재차기출상，침대함다개자계통적내연동차동력포쌍층격진계통，방진계산료공랭자계통적질량화강도대쌍층격진12자유도주계통고유특성적영향규률。연구결과대쌍층격진계통자계통적설계구유지도의의。
In order to study the effects of subsystem parameters on natural characteristics of a double-layer vibration isolation system (DLVIS ),a 3-DOF dynamic model was established,and the analytical expressions of dynamic magnification factor and dimensionless natural frequencies of the system were deduced,then,the relation expressions involving the decoupling level and vibration modal shapes of the isolation system to the mass ratio and stiffness ratio of subsystems were derived.Afterwards,the effects of the mass ratio and stiffness ratio of subsystems on the DLVIS main system natural characteristics were studied.Furthermore,the effects of an air cooling subsystem's mass and stiffness on the natural characteristics of a 12-DOF main system were simulated for a DMU power pack DLVIS with multiple subsystems. The results provided a reference for design of subsystems of a double-layer vibration isolation system.