东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (2): 263-267.DOI: 10.12068/j.issn.1005-3026.2014.02.025

• 机械工程 • 上一篇    下一篇

一体化转子系统动力分析的预应力模态综合法

寇海江1，袁惠群1,2，李岩1，杨文军1   

  1. (1东北大学 机械工程与自动化学院， 辽宁 沈阳110819； 2东北大学 理学院， 辽宁 沈阳110819)
  • 收稿日期:2013-06-18 修回日期:2013-06-18 出版日期:2014-02-15 发布日期:2013-11-22
  • 通讯作者: 寇海江
  • 作者简介:寇海江(1985-)，男，辽宁盘锦人，东北大学博士研究生；袁惠群(1954-)，男，河北石家庄人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51275081).

A Prestressed Component Mode Synthesis Method for Dynamics Analysis of BliskShaft Integrated Rotor

KOU Haijiang1， YUAN Huiqun1,2， LI Yan1， YANG Wenjun1   

  1. 1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. School of Sciences， Northeastern University， Shenyang 110819， China.
  • Received:2013-06-18 Revised:2013-06-18 Online:2014-02-15 Published:2013-11-22
  • Contact: YUAN Huiqun
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摘要： 针对盘片轴一体化转子系统的大规模网格问题，提出用于该类结构动力分析的预应力模态综合法.对前两级整体叶盘进行静、动频分析，给出了影响一体化结构动力分析精度的模态截断数的选取原则，同时验证了本文方法的准确性.计算了盘片轴一体化转子系统的静、动频，给出了旋转作用对该系统模态的影响.比较整体叶盘与一体化转子的模态结果发现，引入转轴的作用使叶片振型对应的动频降低，且一体化转子振型中存在叶片、轮盘及转轴之间的耦合振型，这阐释了利用预应力模态综合法进行大规模网格盘片轴一体化结构动力分析的重要性.

关键词: 盘片轴一体化转子, 模态综合法, 动频, 静频, 预应力模态分析

Abstract: Dynamicallty analyzing a bliskshaft integrated rotor has to solve the problem of large scale finite element mesh. So， a prestressed component mode synthesis method was proposed， with which the static and rotating frequencies of the first two blisks were calculated. The principle for choosing the modal truncation number， which influenced the accuracy of the dynamics analysis of the bliskshaft integrated rotor， was presented. By comparing the static frequency with rotating one of the bliskshaft integrated rotor， the effect of rotation on the modal characteristics of the system was figured out. Modal analysis of the blisks and the bliskshaft integrated rotor indicates that the rotating frequency corresponding to the blade modes is reduced due to the effect of the shaft，and the coupling modes among the blades， disk and shaft are found， which illustrates the importance of the dynamics analysis of bliskshaft integrated rotor with large scale finite element mesh.

Key words: bliskshaft integrated rotor, component mode synthesis(CMS)method, rotating frequency, static frequency, prestressed modal analysis

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