• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (11): 35-41.

• 论文 • 上一篇    下一篇

多支承转子系统弯曲振动分析方法研究

张俊红;于镒隆;高宏阁   

  1. 天津大学机械工程学院
  • 发布日期:2004-11-15

STUDY ON MODE ANALYSES AND RESPONSE CALCULATION OF BENDING VIBRATION IN MULTI-SUPPORTS ROTOR SYSTEM

Zhang Junhong;Yu Yilong;Gao Hongge   

  1. School of Mechanical Engineering,Tianjin University
  • Published:2004-11-15

摘要: 提出一种描述多支承转子系统弯曲振动的数学模型;应用二分法和LU分解法综合计算弯曲自由振动模态,应用Newmark时间差分法和空间五点差分法综合求解弯曲强迫振动动力响应;针对300 MW汽轮机组模型,进行模态分析以及多种激励下的位移响应计算。模态分析、响应计算结果与现场实测数据较为吻合,说明了所建立的动力学模型与采用的计算方法的有效性。

关键词: 差分法, 多支承转子, 模态分析, 弯曲振动, 响应计算

Abstract: The bending vibration equations are established on the multi-supports rotor model system. For calculating mode of free vibration, the dichotomy and LU law are adopted, while the Newmark law and quincunx difference are applied to dynamical response calculations. In a model of a 300 MW turbine generator, the results of calculation are basically identical with the on-the-spot measurements, as accounted for validity of the equations and the laws.

Key words: Bending vibration, Difference method, Mode analyses, Multi-supports rotor, Response calculation

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