摘要
推导建立了考虑转轮叶片作用的悬臂转子系统动力学方程。对运动微分方程进行数值积分,分析了质量偏心、转轮叶片质量及轴承之间的距离等对悬臂转子系统振动特性的影响。数值分析结果表明,随着圆盘2质量偏心的不断增加,转子系统的径向位移近似线性增大;当转轮叶片质量、轴承之间的距离等取不同值时,转子系统径向位移的变化情况较为复杂。圆盘1的径向位移值可能会大于、等于或小于圆盘2的径向位移值。
Derived and established was a kinetic equation for cantilever rotor systems with the role of rotor blades being taken into account.Through a numerical integration of the motion differential equation,the influence of various factors on the vibration characteristics of a cantilever rotor system was analyzed.The factors include mass eccentricity,rotor blade mass and bearing spacing etc.The numerical analytic results show that with a continuous increase of the mass eccentricity of wheel disk No.2,the radial displacement of the rotor system will exhibit an approximately linear increase.In case different values are chosen for rotor blade mass and the spacing between bearings etc.,the change of the radial displacement of the rotor system becomes relatively complicated.The radial displacement value of wheel disk No.1 may be greater than,equivalent to or less than that of wheel disk No.2.
出处
《热能动力工程》
CAS
CSCD
北大核心
2009年第3期281-285,共5页
Journal of Engineering for Thermal Energy and Power
基金
科技部水利部公益性行业科研专项经费基金资助项目(200701008)
国家自然科学雅砻江联合研究重点基金资助项目(50539140)
高等学校博士学科点专项科研基金资助项目(20050487062)
关键词
悬臂转子
叶片质量
质量偏心
径向位移
轴承间距离
overhung rotor,blade quality,mass eccentricity,radial displacement,bearing spacing
