摘要
针对实际工作中的涡轴发动机不平衡量难以监控现状,提出了一种基于非线性支承参数的涡轴发动机高速两支点转子不平量识别方法。建立起转子动力学有限元模型,以支承位移响应工频信号有效值为目标,采用Pointer优化器开展不平衡量识别,通过反馈迭代识别油膜阻尼、刚度。以某真实发动机转子的不平衡量开展识别验证,识别结果符合实际转子不平衡量变化规律,该识别方法计算效率满足工程要求,为发动机整机振动响应仿真分析中的不平衡量施加提供输入条件。
It is difficult to monitor the unbalance of the turbo-shaft engine in practice, and the method is proposed to identify the unbalance of the two fulcrums rotor of turbo shaft engine based on nonlinear bearing parameters. The finite element model of rotor dynamics was established. With the effective value of the support displacement response power frequency signal as the target, Pointer optimizer was used to identify unbalance and feedback iteration is used to identify oil film damping and stiffness. Based on the unbalance measurement of a real engine rotor, the recognition result is in line with the change rule of the unbalance measurement of an actual engine rotor, and the method meets the engineering requirements and provides input conditions for the unbalance in the simulation analysis of engine vibration response.
作者
廖三丰
LIAO San-feng(China Aviation Powerplant Research Institute, Zhuzhou Hunan 412002;Aviation Key Laboratory of Aero-engine Vibration Technology, Zhuzhou Hunan 412002)
出处
《长沙航空职业技术学院学报》
2019年第1期43-48,共6页
Journal of Changsha Aeronautical Vocational and Technical College
关键词
涡轴发动机
转子
不平衡量识别
非线性支承参数
turboshaft engine
rotor
unbalance identification
nonlinear supporting parameters
