Modeling and Nonlinear Dynamic Characteristics Analysis of Fault Bearing Time-Varying Stiffness-Flexible Rotor Coupling System DOI Creative Commons
Renzhen Chen,

Jinan Lv,

Jing Tian

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(22), P. 3591 - 3591

Published: Nov. 16, 2024

There is a complex dynamic interaction between the aero-engine bearing and rotor, resulting time-varying system parameters have an impact on nonlinear characteristics of rolling bearing-flexible rotor system. In this study, stiffness transient response flexible considered. The Newmark-β integral method used to solve equation, relationship load studied. vibration strength analyzed, influence damage size time domain signal energy disc analyzed. results show that model established in paper can accurately reflect rotor. With extension damage, attenuates, intensity excitation force increases, transmitted disc, which affects motion stability disc.

Language: Английский

Nonlinear vibration of rotor-bearing system considering base-motion and bearing-misalignment DOI
Hong Guan, Hui Ma, Xi Chen

et al.

Mechanism and Machine Theory, Journal Year: 2025, Volume and Issue: 206, P. 105933 - 105933

Published: Jan. 21, 2025

Language: Английский

Citations

13
Vibration features and sidebands investigation of a planetary gear transmission system under misaligned bearing and damaged cage DOI
Pengfei Wang,

Chao Wang,

Baogang Wen

et al.

Measurement, Journal Year: 2025, Volume and Issue: unknown, P. 116864 - 116864

Published: Jan. 1, 2025

Language: Английский

Citations

4
Dynamic modeling of a spline-shaft system including time-varying fretting friction DOI
Xinbin Li,

Jianyu Liu,

Jing Liu

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110192 - 110192

Published: April 1, 2025

Language: Английский

Citations

2
Nonlinear vibration analysis of rotor-bearing system with insufficient interference and bearing tilt DOI

Xingfu Ma,

Li Zhi, Jiawei Xiang

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 109966 - 109966

Published: Jan. 1, 2025

Language: Английский

Citations

1
Modeling of misaligned bearing induced by coupling misalignment and assembly errors and vibration analysis in dual-rotor system DOI
Hong Guan, Pengfei Wang, Qian Xiong

et al.

Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 230, P. 112656 - 112656

Published: April 5, 2025

Language: Английский

Citations

1
Study on the Influence of Unbalanced Phase Difference Combinations on Vibration Characteristics of Rotor Systems DOI Creative Commons
Yiming Cao, Shijie Zhong, Xuejun Li

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(6), P. 1691 - 1691

Published: March 8, 2025

Taking the cantilever rotor of a turbine engine as research object, dynamic and finite-element model is established, effectiveness verified by test platform. The transfer function method used to balance system under unbalanced excitation, experiments prove that adopted in this paper has good balancing effect effectively reduces vibration rotor. On basis, experimental tests simulation analyses response different phases difference combinations are carried out, influence phase’s on unbalance analyzed. results show decreases with increase phase combinations, amplitude induced reverse combination smaller than in-phase combination. work can provide theoretical basis for control flexible an aero-engine.

Language: Английский

Citations

0
Unbalanced Position Recognition of Rotor Systems Based on Long and Short-Term Memory Neural Networks DOI Creative Commons
Yiming Cao, Chengbin Shi, Xuejun Li

et al.

Machines, Journal Year: 2024, Volume and Issue: 12(12), P. 865 - 865

Published: Nov. 28, 2024

Rotor unbalance stands as one of the primary causes vibration and noise in rotating equipment. Accurate identification unbalanced positions enables targeted measures for balance correction, thereby reducing levels enhancing operational efficiency stability However, complexity rotor structures may lead to a diversity transmission paths, which complicates positions. In this paper, an experimental platform systems is established analyze change patterns displacement at four Additionally, dynamics model developed based on finite element method verified through experiments. Furthermore, position Long Short-Term Memory (LSTM) neural networks proposed. This utilizes multiple sets measured response data simulated from train LSTM network, achieving precise various rotational speeds. The research results indicate that under subcritical, critical, supercritical speeds, accuracy reaches 95.5%, while remains high level 90.5%. These fully validate effectiveness proposed method, providing new insights technical means identifying

Language: Английский

Citations

2
Modeling and Nonlinear Dynamic Characteristics Analysis of Fault Bearing Time-Varying Stiffness-Flexible Rotor Coupling System DOI Creative Commons
Renzhen Chen,

Jinan Lv,

Jing Tian

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(22), P. 3591 - 3591

Published: Nov. 16, 2024

There is a complex dynamic interaction between the aero-engine bearing and rotor, resulting time-varying system parameters have an impact on nonlinear characteristics of rolling bearing-flexible rotor system. In this study, stiffness transient response flexible considered. The Newmark-β integral method used to solve equation, relationship load studied. vibration strength analyzed, influence damage size time domain signal energy disc analyzed. results show that model established in paper can accurately reflect rotor. With extension damage, attenuates, intensity excitation force increases, transmitted disc, which affects motion stability disc.

Language: Английский

Citations

0