The influence of rotor-stator contact on the nonlinear vibration of an asymmetrical rotor

被引：0

作者：

Fasihi, Ali ^{[1
,3
]}

Shahgholi, Majid ^{[2
]}

Kudra, Grzegorz ^{[1
]}

Ghandchitehrani, Maryam ^{[3
]}

Awrejcewicz, Jan ^{[1
]}

机构：

[1] Lodz Univ Technol, Dept Automat Biomech & Mechatron, 15 Stefanowski St Bldg A22, PL-90924 Lodz, Lodzkie, Poland

[2] Shahid Rajaee Teacher Training Univ, Dept Mech Engn, Tehran 1678815811, Tehran, Iran

[3] Univ Groningen, Dynam & Vibrat Grp, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

NONLINEAR DYNAMICS | 2025年

关键词：

Rotor-stator contact; Asymmetric rotor; Bifurcation; Period-n motion; MODAL-ANALYSIS; SHAFT;

D O I：

10.1007/s11071-025-11525-1

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study investigates the nonlinear vibration behavior of an asymmetric rotor subjected to rotor-stator contact effects. The rotor is mounted on elastic supports and excited by an unbalanced force arising from the eccentricity of its center of gravity. The governing equations of motion are derived using Hamilton's principle and Rayleigh beam theory, incorporating geometric and inertial nonlinearities due to shaft inextensibility. Numerical solutions reveal complex dynamic behaviors, including transitions among periodic, period-n, and chaotic motions. Bifurcation diagrams and phase portraits are utilized to explore the influence of key system parameters, such as rotational speed, contact stiffness, damping coefficient, and asymmetry.

引用

页数：23

共 27 条

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