弹性环式支承结构动刚度分析及其对转子系统的影响

doi:10.12068/j.issn.1005-3026.2022.05.009

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (5): 667-673.DOI: 10.12068/j.issn.1005-3026.2022.05.009

弹性环式支承结构动刚度分析及其对转子系统的影响

罗忠^{1, 2, 3}，刘家希^{1, 2}，刘凯宁^{1, 2}，孙凯^{1, 2}

(1. 东北大学机械工程与自动化学院，辽宁沈阳110819; 2. 东北大学航空动力装备振动及控制教育部重点实验室，辽宁沈阳110819; 3. 东北大学佛山研究生院，广东佛山528312)

修回日期:2021-06-14 接受日期:2021-06-14 发布日期:2022-06-20
通讯作者: 罗忠
作者简介:罗忠(1978-)，男，内蒙古集宁人，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(11872148); 广东省基础与应用基础研究基金联合基金资助项目(2020B1515120015); 中央高校基本科研业务费专项资金资助项目(N180703018，N2003012，N2003013).

Analysis of Dynamic Stiffness of the Elastic Ring Support Structure and Its Influence on the Rotor System

LUO Zhong^{1, 2, 3}， LIU Jia-xi^{1, 2}， LIU Kai-ning^{1, 2}， SUN Kai^{1, 2}

1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion System， Ministry of Education， Northeastern University， Shenyang 110819， China; 3. Foshan Graduate School，Northeastern University， Foshan 528312， China.

Revised:2021-06-14 Accepted:2021-06-14 Published:2022-06-20
Contact: LUO Zhong
About author:-
Supported by:
-

摘要/Abstract

摘要： 针对用于航空发动机转子系统中的弹性环式支承结构刚度特性问题，开展其动刚度分析和实验测试以及其对转子系统固有特性影响分析研究.首先，建立弹性环式支承结构有限元模型，对其动刚度进行计算，并进行动刚度测试与验证，经实验所得测试结果与仿真计算的结果趋势一致，证明了对弹性环式支承结构的动刚度分析方法的有效性.然后，建立了带弹性环式支承结构的转子系统有限元模型，研究了转子系统在静刚度和动刚度条件下对临界转速的影响.结果表明，弹性环式支承结构动刚度对临界转速的影响较为明显，其中一阶临界转速降低了26%，且产生了新的共振频率，因此分析转子系统固有特性时应充分考虑支承结构的动刚度影响.

关键词: 弹性环式支承结构;动刚度;有限元仿真;转子系统;临界转速

Abstract: Aiming at the stiffness characteristics of the elastic ring support structure used in the aero-engine rotor system， the dynamic stiffness analysis and experimental tests as well as the analysis of its influence on the natural characteristics of the rotor system are carried out. First， a finite element model of the elastic ring support structure is established to calculate its dynamic stiffness， then the dynamic stiffness testing and verification is conducted. The experimental test results are basically consistent with the simulation results， which verify the correctness of the finite element analysis method of the elastic ring structure. Then， a finite element model is built which includes the rotor system and the elastic ring structure. Besides， the influence of the rotor system on the critical speed under the conditions of static and dynamic stiffness is studied. The results show that the dynamic stiffness of the elastic ring support structure has a significant impact on the critical speed. The first-order critical speed is reduced by 26%， and a new resonance frequency is generated. Therefore， the dynamic stiffness of the support structure should be fully considered when analyzing the natural characteristics of the rotor system.

Key words: elastic ring support structure; dynamic stiffness; finite element simulation; rotor system; critical speed

中图分类号:

V214. 1

罗忠，刘家希，刘凯宁，孙凯. 弹性环式支承结构动刚度分析及其对转子系统的影响[J]. 东北大学学报（自然科学版）, 2022, 43(5): 667-673.

LUO Zhong ， LIU Jia-xi ， LIU Kai-ning ， SUN Kai. Analysis of Dynamic Stiffness of the Elastic Ring Support Structure and Its Influence on the Rotor System[J]. Journal of Northeastern University(Natural Science), 2022, 43(5): 667-673.

参考文献

[1]Childs D W.Rotor dynamics of turbo machinery ［C］ // Proceedings of the Sixth International Conference on Rotor dynamics.Sydney，2000:66-70.
[2]Bai C Q，Xu Q Y，Wang J Y.Effects of flexible support stiffness on the nonlinear dynamic characteristics and stability of a turbopump rotor system［J］.Nonlinear Dynamics，2011，64:237-252.
[3]Luo H T，Fu J，Yu C S.Numerical simulation and experimental testing of dynamic stiffness of angular contact ball bearing［J］.Advances in Mechanical Engineering，2018，10(9):1-14.
[4]Gupta T C.Parametric studies on dynamic stiffness of ball bearings supporting:a flexible rotor ［J］.Journal of Vibration and Control，2019，25(15):2175-2188.
[5]龙伦，吕彪，袁巍.支承动刚度对某涡轴发动机燃气发生器转子临界转速影响分析［J］.风机技术，2018，60(2):66-70.(Long Lun，Lyu Biao，Yuan Wei.Analysis of influence of supporting dynamic stiffness on critical rotational speed of a turboshaft engine gas generator rotor［J］.Fan Technology，2018，60(2):66-70.)
[6]Hong J，Chen M，Liu S.Application of whole engine finite element models in aero-engine rotordynamic simulation analysis［C］//ASME Turbo Exposition.Montreal，2007:771-778.
[7]Hong J，Wang H，Xiao D，et al.Effects of dynamic stiffness of rotor bearing on rotor dynamic characteristics［J］.Aeroengine，2008，34(1):23-27.
[8]Ma Y H，Zhu H，Zhang D，et al.Experimental envestigation on dynamic mechanical behavior of the elastic ring support with metal rubber［C］//ASME 2013 International Mechanical Engineering Congress and Exposition.San Diego，2013:53-60.
[9]Song H Y，Wang S H，Sun K.Rotordynamic characteristics analysis for an aero-engine low pressure rotor rig test model［C］//Commercial Aircraft Engine Conferences.Shanghai，2018，179(9):03012.
[10]乔留春.弹支结构用异型轴承刚度特性分析及试验研究［D］.大连:大连理工大学，2018.(Qiao Liu-chun.Analysis and experimental research on stiffness characteristics of special bearing for elastic-supported structure［D］.Dalian:Dalian University of Technology，2018.)
[11]赵文涛.考虑实测支承动刚度的航空发动机整机振动建模及验证［D］.南京:南京航空航天大学，2012.(Zhao Wen-tao.Vibration modeling and verification of aircraft engine considering measurements of supporting dynamic stiffness［D］.Nanjing:Nanjing University of Aeronautics and Astronautics，2012.)
[12]马艳红，陆宏伟，朱海雄，等.弹性环金属橡胶支承结构刚度设计与试验验证［J］.航空学报，2013，34(6):1301-1308.(Ma Yan-hong，Lu Hong-wei，Zhu Hai-xiong，et al.Structural stiffness design and experimental verification of metal rubber bearing with elastic ring［J］.Acta Aeronautica et Astronautica Sinica，2013，34(6):1301-1308.)
[13]刘闯，陈国栋，杨阳，等.基于有限元仿真的弹性环刚度特性分析［J］.沈阳航空航天大学学报，2019，36(3):8-13.(Liu Chuang，Chen Guo-dong，Yang Yang，et al.Stiffness analysis of elastic ring based on finite element simulation［J］.Journal of Shenyang Aerospace University，2019，36(3):8-13.)
[14]Diligenskiy D，Novikov D.Studying of manufacturing tolerance influence on the performance of GTE rotor elastic rings［J］.Procedia Engineering，2017，176:483-497.
[15]Zhang W，Ding Q.Elastic ring deformation and pedestal contact status analysis of elastic ring squeeze film damper［J］.Journal of Sound Vibration，2015，346:314-327.
[16]Lu E O，Ripin Z M.Dynamic stiffness and loss factor measurement of engine rubber mount by impact test［J］.Materials & Design，2011，32(4):1880-1887.
[17]黄宇熙.耦合双转子-组合支承系统非线性动力特性分析［D］.大连:大连海事大学，2018.(Huang Yu-xi.Analysis of nonlinear dynamic characteristics of coupled double rotor and combined bearing system［D］.Dalian:Dalian Maritime University，2018.)
[18]王震林.弹性环式挤压油膜阻尼器动力学特性研究［D］.哈尔滨:哈尔滨工业大学，2019.(Wang Zhen-lin.Research on the dynamic characteristics of elastic ring squeeze film damper［D］.Harbin:Harbin Institute of Technology，2019.)

弹性环式支承结构动刚度分析及其对转子系统的影响

Analysis of Dynamic Stiffness of the Elastic Ring Support Structure and Its Influence on the Rotor System

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价