摘要
针对双盘悬臂转子系统过临界不平衡振动过大的问题,设计了一种整体式挤压油膜阻尼器(ISFD),并为ISFD设计了相应的轴承座及供油油路。搭建了双盘悬臂转子实验台,并运用有限元分析得到了该转子系统的一阶模态参数及二阶模态参数;通过有限元仿真技术计算得到了ISFD的静刚度大小,并将计算得到的一阶模态刚度与设计的弹性支承刚度大小进行了对比,验证了ISFD可以调节转子系统一阶模态参数;通过实验对比分析了弹性支承对转子系统振动的影响,及进油方式对ISFD减振效果的影响。研究结果表明:本文设计的ISFD弹性支承可以有效抑制转子系统过临界振动,并且齿轮泵供油方式的ISFD阻尼系数大于浸油润滑的ISFD阻尼系数。
Aiming at the problem of unbalance response of double-disk cantilever rotor system, an integral squeeze film damper(ISFD)was designed, at the same time, corresponding bearing house and oil supply circuit were designed for ISFD. A double-disk cantilever rotor test-bench whose first modal parameter and second modal parameter were calculated by ANSYS was built. The static stiffness of ISFD was calculated by finite element technology, moreover the first modal stiffness of double-disc rotor system were compared with ISFD stiffness, the first-order modal parameters of the rotor system was adjusted by ISFD elastic support. The influence of elastic support and different oil intake method on the vibration reduction effect of ISFD were analyzed in the experimental process. The results show that the ISFD elastic support can effectively suppress the over-critical vibration of the rotor system, and the ISFD damping coefficient of oil supply by gear pump is larger than that of oil-immersed lubrication.
作者
万方腾
何立东
范文强
王胜利
WAN Fang-teng;HE Li-dong;FAN Wen-qiang;WANG Sheng-li(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《机电工程》
CAS
北大核心
2019年第12期1266-1270,1281,共6页
Journal of Mechanical & Electrical Engineering
基金
国家重点基础研究发展计划(“973”计划)资助项目(2012CB026000)
关键词
整体式挤压油膜阻尼器
双盘悬臂转子
弹性支承
模态参数
integral squeeze film damper(ISFD)
double-disc cantilever rotor system
elastic support
modal parameter
