摘要
建立了用于转子系统的干摩擦阻尼器的结构模型和力学模型 ,分析了带干摩擦阻尼器转子的运动 ,探明了干摩擦阻尼器的阻尼效果和镇定机理 ,给出了确定干摩擦阻尼器镇定边界的能量平衡方法。分析结果表明 。
A model of a dry friction damper is suggested and incorporated into a Jeffcott rotor. Its advantages of damping and stabilizing the vibration of the rotor are revealed by an investigation on the motion of the rotor with dry friction dampers. A boundary limit of the stabilization provided by the dry friction dampers is obtained, which is A lim=2Fμπ|D|s (F-the normal force acting on the friction plane; μ-the friction coefficient; D-the inherent negative damping of the rotor; s-the stiffness of the rotor). It follows that the dry friction damper may be a promising replacement of the squeeze film damper in some circumstances.
出处
《机械科学与技术》
CSCD
北大核心
2003年第5期743-745,760,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
干摩擦阻尼器
转子
失稳振动
镇定边界
Dry friction damper
Rotor
Stabilization of unstable motion
Boundary limit of stabilization
