期刊
ENGINEERING FAILURE ANALYSIS
卷 112, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfailanal.2020.104510
关键词
Combined rotor; Bolted joint; Finite element method; Joint interface stiffness; Unbalance excitation
资金
- National Natural Science Foundation of China [51875076, 51875081]
- LiaoNing Revitalization Talents Program [XLYC1808016]
- Fundamental Research Funds for the Central Universities of China [DUT19LAB17]
Bolted connection is the basic connection form of combined rotor system for aeroengine, and its connection performance directly determines the dynamic characteristics of the rotor system. However, there are few studies on the dynamic characteristics of the rotor considering joint interface assembly parameters. Thus, the mechanical model of the bolted joint is presented by characterizing the mechanical relationship between the adjacent nodes of the joint interface. Then, in term of the mechanics model of joint interface and finite element method, the rotor assembly dynamic model of drum-disk-shaft is established. The influence of rotational speed, unbalance and joint interface stiffness on the dynamic response of the rotor is analyzed. By establishing the finite element model (FEM) of the test-bed, the maximum error is 6.1% compared with the experimental mode, which verifies the rationality of the FEM considering connecting bolts pretightening. Finally, the FEM of the aeroengine high pressure rotor system is established to study the dynamic characteristics of the rotor system under different pre-tightening conditions, which provides a theoretical basis for detecting and identifying the performance of the bolt joint of the aeroengine rotor system.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据