Simulation and experiment on lateral vibration transmission control of a shafting system with active stern support

Xie, Xiling; Ren, Mingke; Zhu, Yueyue; Zhang, Zhiyi

doi:10.1016/j.ijmecsci.2019.105363

Cited by 26 publications

(16 citation statements)

References 21 publications

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“…To derive the lateral, longitudinal, and torsional vibration equations of a multi-segment Timoshenko beam, the relationships between the coefficients of two adjacent segments, which are given in Appendix A, are first obtained with the compatibility and equilibrium conditions at the point x i (i = 1, 2, ., n + 1). 25,26 (a) Lateral vibration of a single beam The coefficients of the first segment C 11 , C 21 , C 31 , and C 41 can be expressed by the following matrix equation:…”

Section: Modelling Of the Shaft Bracketmentioning

confidence: 99%

Active vibration control of a shaft bracket-plate coupled system

Yang

Xie

Ren

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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Active vibration control of a shaft bracket-plate coupled system is investigated. The vibration of the plate is controlled with electromagnetic vibration absorbers (EVAs), which are mounted around the feet of the shaft bracket to impede the transmission of vibration from the bracket apex to the plate. A dynamic model is established on the Timoshenko beam theory and the Kirchhoff thin plate theory to reveal the mechanism of vibration transmission. It is exhibited that all the induced forces and moments at the coupling points contribute much to the transverse responses of the plate. The feasibility of active control with the EVAs is evaluated numerically based on the controllability of the plate vibration. It is demonstrated that the two-point in-plane control is able to attenuate the plate vibration under the excitation of in-plane disturbance forces, while the multi-point control is effective in reducing the plate vibration regardless of the directions of disturbance forces. An experimental system is built to verify the performance of the two-point in-plane control. The results have shown that with the help of adaptive control, the two-point in-plane control is capable of suppressing the vibration of the foundation induced by the in-plane forces acting on the shaft bracket.

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Section: Modelling Of the Shaft Bracketmentioning

confidence: 99%

Active vibration control of a shaft bracket-plate coupled system

Yang

Xie

Ren

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…The propulsion-shaft system is an important part of a ship’s power system, and the stern bearing is an essential equipment of this system [ 1 ]. The stern bearing is used to support the stern shaft and propeller to ensure the regular operation of the propulsion-shaft system.…”

Section: Introductionmentioning

confidence: 99%

Film-Thickness Identification Method and Lubrication Characteristic Experiment of Full-Size Water-Lubricated Stern Bearing under Offset Load

Ouyang

Liu

et al. 2022

Sensors

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Water-lubricated stern bearing (WSB) is a vital part of the ship propulsion-shaft system, and it is of great significance to monitor and analyze its lubrication status through film thickness data to improve the equipment operational reliability. In this paper, a full-size, large length-to-diameter ratio WSB experiment is carried out, and multi-sectional journal displacement data are collected under offset load. Accordingly, a bearing film-thickness identification model is established, which can identify the dynamic film thickness data in the circumferential direction of bearing section by limited measurement points. On this basis, the film thickness distribution of the full bearing is obtained by combining finite element (FE) simulation and particle swarm optimization (PSO) algorithm. The effect of different speeds on the distributed lubrication characteristics of WSB under offset load was systematically analyzed based on film thickness data. Results show that the maximum identification error of the bearing film-thickness identification model is less than 7%. The bearing lubrication state changes dynamically as the speed increases, and the hydrodynamic lubrication effect in the middle of the bearing is enhanced. The area of each lubrication sub-region varies nonlinearly. Research results are instructive for further determine the service life of the shaft system.

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“…Vibration control methods and facilities have been proposed to suppress the noise generated by the fluctuating propeller forces, for example, the resonance changer (Goodwin, 1960), the auxiliary magnetic thrust bearing (Lewis et al, 1989a(Lewis et al, , 1989b, the active stern support (Xie et al, 2019(Xie et al, , 2020, and the dynamic antiresonant vibration isolator (Liu et al, 2018). Baz et al (1990) used an active vibration control system to attenuate the thrust-induced vibration, and the amplitude is reduced by approximately 11 dB.…”

Section: Introductionmentioning

confidence: 99%

Investigation on vibration transmission control of a shafting system with active orthogonal support

Zhu

Xie

Zhang

2021

Journal of Vibration and Control

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A large proportion of the fluctuating propulsion forces transmit to the hull structure of an underwater vehicle through the stern support and cause structural vibration and sound radiation. To reduce the influence of the dynamic forces on the hull structure, a control method that uses an active orthogonal support is proposed. The active orthogonal support is arranged in the vertical and horizontal directions to connect the stern bearing and the hull structure and equipped with electromagnetic actuators to generate counter forces. A shaft–hull-coupled system is used to investigate the effectiveness of active orthogonal support, and numerical results indicate that the hull vibration and acoustic radiation can be significantly suppressed. The effectiveness of active orthogonal support was experimented as well. The experimental results have demonstrated that the active orthogonal support with local velocity feedback control is able to attenuate vibration transmission in the shaft–hull-coupled system.

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Simulation and experiment on lateral vibration transmission control of a shafting system with active stern support

Cited by 26 publications

References 21 publications

Active vibration control of a shaft bracket-plate coupled system

Active vibration control of a shaft bracket-plate coupled system

Film-Thickness Identification Method and Lubrication Characteristic Experiment of Full-Size Water-Lubricated Stern Bearing under Offset Load

Investigation on vibration transmission control of a shafting system with active orthogonal support

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