...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mechanical systems and signal processing >Dynamic modeling and stability analysis of a rotor-bearing system with bolted-disk joint
【24h】

Dynamic modeling and stability analysis of a rotor-bearing system with bolted-disk joint

机译：具有螺栓磁盘接头的转子系统的动态建模与稳定性分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In large rotating machines, the rotor system involves multistage disks, where bolted joints are the basic form to connect the adjacent disks. Those bolted joints, subjected to unbalanced forces and moments during normal operation, influencing the rotor dynamics and giving rise to different motion states, which are of interest for investigations focusing on vibration signatures and dynamic stability. However, little research has been done on the rotor vibration characteristics considering dynamic parameters of bolted-disk joints. Thus, the bolted-disk joint element with two nodes is proposed by characterizing the mechanical relationship between the adjacent disks in this paper. Then, in terms of the proposed joint element and lumped mass modeling method, the dynamic model for the rotor system with a bolted-disk joint is established. After that, the responses of the system are solved numerically using the Newmark-p method, and bifurcation diagram, three-dimensional spectral plots, Poincare maps as well as spectral plots are used to analyze the dynamic behaviors under different tangential stiffness and transition point of bending stiffness of the bolted joint. Additionally, the influences of the bending stiffness of bolted-disk joint on system response are also examined. Finally, utilizing the rotor dynamic responses experiment performed at a bolted-joint rotor-bearing test rig with an electric tightening wrench, some of the results from the simulation study are verified. The present work provides a theoretical basis for detecting the performance of the bolted joint of the rotor-bearing system, and prevent failure caused by changes in the stiffness of the bolted joint.
机译：在大型旋转机器中，转子系统涉及多级盘，其中螺栓接头是连接相邻磁盘的基本形式。那些螺栓连接在正常操作期间经受不平衡的力和力矩，影响转子动力学并引起不同的运动状态，这对关注振动签名和动态稳定性的研究感兴趣。然而，考虑到螺栓磁盘接头的动态参数，对转子振动特性进行了很少的研究。因此，通过表征本文中的相邻磁盘之间的机械关系，提出了具有两个节点的螺栓磁盘接头元件。然后，就所提出的接头元件和集成的质量建模方法而言，建立了具有螺栓盘接头的转子系统的动态模型。之后，使用Newmark-P方法数值求解系统的响应，并使用分叉图，三维光谱图，庞的地图以及光谱图来分析不同切向刚度和过渡点的动态行为螺栓接头的弯曲刚度。另外，还检查了螺栓盘接头弯曲刚度对系统响应的影响。最后，利用在螺栓接头转子试验台上进行的转子动力响应试验，该试验用电动拧紧扳手，验证了仿真研究的一些结果。本作者为检测转子系统的螺栓接头的性能提供了理论依据，并防止由螺栓接头的刚度变化引起的故障。

著录项

  • 来源
    《Mechanical systems and signal processing》 |2021年第9期|107778.1-107778.23|共23页
  • 作者

    Yuqi Li; Zhong Luo; Jiaxi Liu; Hui Ma; Dongsheng Yang;

  • 作者单位

    School of Mechanical Engineering & Automation Northeastern University Shenyang 110819 PR China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 PR China;

    School of Mechanical Engineering & Automation Northeastern University Shenyang 110819 PR China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 PR China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian 116024 PR China;

    School of Mechanical Engineering & Automation Northeastern University Shenyang 110819 PR China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 PR China;

    School of Mechanical Engineering & Automation Northeastern University Shenyang 110819 PR China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 PR China;

    School of Information Science and Engineering Northeastern University Shenyang 110819 PR China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dynamic analysis; Experimental verification; Bolted-disk joint; Rotor-bearing system; Tangential stiffness;

    机译：动态分析;实验验证;螺栓圆盘关节;转子系统;切向僵硬;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号