The numerical modeling of rotor–stator rubbing in rotating machinery: a comprehensive review

K Prabith, IRP Krishna - Nonlinear Dynamics, 2020 - Springer
The rotor–stator rubbing in rotating machinery generated as a consequence of rotor
imbalance, shaft misalignment, and casing deformation is a potential threat to the machinery …

Transient vibration analysis of unit-plant structure for hydropower station in sudden load increasing process

L Zhang, Q Wu, Z Ma, X Wang - Mechanical Systems and Signal …, 2019 - Elsevier
The vibration problem of hydraulic generating unit and plant structures in hydropower station
influenced mainly by pressure fluctuation of draft tube and other factors during the transient …

The generalized Hamiltonian model for the shafting transient analysis of the hydro turbine generating sets

Y Zeng, L Zhang, Y Guo, J Qian, C Zhang - Nonlinear Dynamics, 2014 - Springer
Traditional rotor dynamics mainly focuses on the steady-state behavior of the rotor and
shafting. However, for systems such as hydro turbine generating sets (HTGS) where the …

Nonlinear vibration response of a complex aeroengine under the rubbing fault

J Liu, Q Fei, S Wu, Z Tang, D Zhang - Nonlinear Dynamics, 2021 - Springer
Rolling bearing and squeeze film damper will introduce structural nonlinearity into the
dynamic model of aeroengine. Rubbing will occur due to the clearance reduction design of …

A model establishment and numerical simulation of dynamic coupled hydraulic–mechanical–electric–structural system for hydropower station

Q Wu, L Zhang, Z Ma - Nonlinear Dynamics, 2017 - Springer
A nonlinear dynamic coupled model for hydropower station system, which contains the
model of water-carriage system, water turbine system, speed governor system, generator's …

Shaft mis-alignment induced vibration of a hydraulic turbine generating system considering parametric uncertainties

B Xu, D Chen, H Zhang, C Li, J Zhou - Journal of Sound and Vibration, 2018 - Elsevier
Shaft mis-alignment is one of the most common faults in rotating machineries. Most existing
approaches that establish mathematical models address the complex forces acting on the …

Coupled bending-torsional vibration analysis for rotor-bearing system with rub-impact of hydraulic generating set under both dynamic and static eccentric …

J Zhang, L Zhang, Z Ma, X Wang, Q Wu, Z Fan - Chaos, Solitons & Fractals, 2021 - Elsevier
Modern industrial requirements are continuously demanding better performance, smaller
clearance, higher rotational speed and higher load from hydraulic generating set, under this …

Dynamics of a misaligned Kaplan turbine with blade-to-stator contacts

F Thiery, R Gustavsson, JO Aidanpää - International Journal of Mechanical …, 2015 - Elsevier
Rotor-to-stator contacts can occur in hydropower systems due to mechanical and electrical
misalignment as well as high unbalance forces. It can result in high impact forces and …

Parameter sensitivity and dynamic characteristic analysis of bulb hydro generating unit with shaft crack fault

D Yan, Q Chen, Y Zheng, W Liu - Mechanical Systems and Signal …, 2021 - Elsevier
The shaft crack fault of hydro generating unit (HGU) has a serious threat to the reliability and
security of the hydropower station. However, the parameter sensitivity, operation stability …

A general electromagnetic excitation model for electrical machines considering the magnetic saturation and rub impact

X Xu, Q Han, F Chu - Journal of Sound and Vibration, 2018 - Elsevier
The electromagnetic vibration of electrical machines with an eccentric rotor has been
extensively investigated. However, magnetic saturation was often neglected. Moreover, the …