【作者】 陈红永； 沈展鹏； 黎启胜； 宋琼； 李心耀； 鄂林仲阳； 杜强；

【Author】 CHEN Hong-yong;SHEN Zhan-peng;LI Qi-sheng;SONG Qiong;LI Xin-yao;E Lin-zhongyang;Du Qiang;Institute of Systems Engineering, Chinese Academy of Engineering Physics;Sichuan Key Laboratory of Impact and Vibration of Engineering Materials and Structures;

【机构】 中国工程物理研究院总体工程研究所； 工程材料与结构冲击振动四川省重点实验室；

【摘要】 转子动力学稳定性问题是高速离心机研制的关键技术问题。为验证离心机转子系统支承方式对整体动态特性的影响,设计了小型高速离心机试验系统,开展两导及三导支承方式下整体动态特性实验,开展圆盘转子和臂式转子的模态特性对比等实验。研究表明:通过静止状态两导及三导支承模态测试,获得了转臂/转盘、机室、穹顶、机架、基础等部组件模态特性,研究表明对基础动态特性影响较大的是与地面的连接方式,通过模型修正技术获得了基础的建模参数;三导支承方式可有效提高系统的模态频率及稳定性,在较大不平衡力下稳定性更好,但同时也带来了系统的复杂度及装配精度的要求。研究结果为高速离心机设计及稳定性分析方法验证具有指导意义。更多还原

【Abstract】 Dynamic stability of rotor is a key technical problem in the development of high-speed centrifuge. In order to verify the influence of the support mode of the centrifuge rotor system on the overall dynamic characteristics, a small high-speed centrifuge test system was designed, and the overall dynamic characteristics experiments were carried out under the two and three guide support modes, and the modal characteristics of the disc rotor and the arm rotor were compared. The research shows that the modal characteristics of the rotary arm/rotary table, engine room, dome, frame,foundation and other components are obtained through the modal test of the two-guide and threeguide support in the static state. The research shows that the connection mode with the ground has a great impact on the dynamic characteristics of the foundation, and the modeling parameters of the foundation are obtained through the model modification technology; The three-guide support mode can effectively improve the modal frequency and stability of the system, and the stability is better under large unbalanced forces, but it also brings the requirements of system complexity and assembly accuracy. The research results have guiding significance for the design of high-speed centrifuge and the validation of stability analysis methods.更多还原