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 (6): 841-845.DOI: 10.12068/j.issn.1005-3026.2014.06.018

• 机械工程 • 上一篇    下一篇

某型燃气轮机一体化叶盘转子系统动力学特性

杨文军1，袁惠群1，寇海江1，李耀铮2   

  1. (1 东北大学 机械工程与自动化学院， 辽宁 沈阳110819； 2 武汉大学 动力与机械学院， 湖北 武汉430072)
  • 收稿日期:2013-08-10 修回日期:2013-08-10 出版日期:2014-06-15 发布日期:2014-04-11
  • 通讯作者: 杨文军
  • 作者简介:杨文军(1988-)，男，内蒙古赤峰人，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)；国家自然科学基金重点资助项目(51335003).

Dynamics of Integrated BladeDiscRotor System of the Gas Turbine

YANG Wenjun1， YUAN Huiqun1， KOU Haijiang1， LI Yaozheng2   

  1. 1School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2School of Power and Mechanical Engineering， Wuhan University， Wuhan 430072， China.
  • Received:2013-08-10 Revised:2013-08-10 Online:2014-06-15 Published:2014-04-11
  • Contact: YUAN Huiqun
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摘要： 以某型燃气轮机转子系统为研究对象，建立了叶盘转子一体化模型，通过子结构法与整体法所求静频结果的比较，验证了子结构法分析计算过程的准确性和高效性.应用子结构法，考虑离心应力的作用，求解了一体化叶盘转子系统在工作转速下的动频，并与传递矩阵法的计算结果进行了比较，分析了叶片对整体模态的影响.建立了不同展弦比下叶盘系统的模型，探讨了在定宽度和定长度情况下，不同叶片展弦比对系统模态的影响变化规律.研究结果表明:考虑叶片对一体化叶盘转子系统离心刚化的作用，使得研究结果更加接近工程实际，叶片展弦比对系统的振动特性存在较大的影响.研究为某型燃气轮机转子的动力学设计提供了理论依据.

关键词: 一体化叶盘转子, 离心应力, 子结构法, 模态, 展弦比

Abstract: An integrated bladediscrotor model was established based on a gas turbine rotor system. With the overall and substructure methods， the static frequency was solved. The comparison of two methods shows that the accuracy and efficiency of the substructure method is high. Considering the role of centrifugal stress， dynamic frequency of the integrated bladediscrotor system at working speed was solved with the substructure method. Meanwhile， the influence of the blade on the overall modality was analyzed. Finite element models of the bladedisc system were established under different aspect ratios， and the influence of aspect ratio on bladedisc system model was explored in fixed blade width and fixed blade length， respectively. Results indicate that the study is closer to practical engineering when considering the blade centrifugal stiffening effect on the bladediscrotor system. The aspect ratio has a great influence on the system vibration characteristics. This research provides theoretical basis for the dynamics design of gas turbine rotor.

Key words: integrated bladediscrotor, centrifugal stress, substructure method, modality, aspect ratio

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