Dynamic modeling and response analysis of rub-impact rotor system with squeeze film damper under maneuvering load

被引：39
作者：
Pan, Wujiu [1 ,2 ]
Li, Xianmu [1 ,2 ]
Ling, Liangyu [1 ,2 ]
Qu, Haoyong [1 ,2 ]
机构：
[1] Shenyang Aerosp Univ, Sch Mechatron Engn, Shenyang 110136, Peoples R China
[2] Shenyang Aerosp Univ, Adv Mfg Technol Res Ctr, Shenyang 110136, Peoples R China
来源：
APPLIED MATHEMATICAL MODELLING | 2023年 / 114卷
基金：
中国国家自然科学基金;
关键词：
Rub-impact rotor system; Dynamic analysis; Climbing maneuver flight; Squeeze film damper (SFD); BEARING SYSTEM; BIFURCATION-ANALYSIS; NONLINEAR RESPONSE; FLEXIBLE ROTOR; SHAFT-BEARING; OIL-FILM;
D O I：
10.1016/j.apm.2022.10.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With the development of the aero-engine rotor system towards accurate modeling, it is necessary to establish a general rotor system model considering many important strong nonlinear factors. In this paper, based on the finite element method, a 6-node rub-impact rotor system model including the newly-built blade-casing rub-impact force, climbing ma-neuvering load, nonlinear Hertz contact force of rolling bearing, rotor eccentric unbalance force, gravity field and squeeze film damper oil film force is established. The dynamic re-sponses of the system under different rub-impact stiffness, different oil film clearance and different bearing clearance are analyzed in detail by means of bifurcation diagram, three-dimensional spectrum diagram and axis trajectory diagram. Through comparative analysis, it is found that the change of the oil film clearance has the greatest influence on the rub-impact response of the system, followed by the bearing clearance, and the change of the rub-impact stiffness has the least influence on the rub-impact response of the system. The study of this paper can provide a theoretical basis for the rub-impact response of the rub-impact rotor system with squeeze film damper under climbing maneuvering flight.(c) 2022 Elsevier Inc. All rights reserved.
引用
收藏
页码：544 / 582
页数：39
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