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

Zhu, Yueyue; Xie, Xiling; Zhang, Zhiyi

doi:10.1177/1077546321993583

Cited by 5 publications

(3 citation statements)

References 31 publications

(32 reference statements)

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“…The propellers of ships and submarines can generate undesirable fluctuating forces in an unsteady non-uniform wake field caused by the protrusions of control surfaces or asymmetry of the hull (Zhu and Xie et al, 2021). The fluctuated thrust will be transmitted through the propulsion shafting system to the supporting foundation and excites the hull.…”

Section: Introductionmentioning

confidence: 99%

Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter

Dai

Shi

Yang

et al. 2022

Journal of Vibration and Control

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This study proposes the use of a novel nonlinear tuned mass damper inerter device in vibration suppression of the ship propulsion shafting system and evaluates its performance. The device consists of an axial inerter and a pair of lateral inerters to create geometric nonlinearity. The system response subjected to propeller forces is determined by using the harmonic balance method with alternating-frequency-time technique and a numerical time-marching method. The force transmissibility and energy flow variables are employed to assess the performance of the device. The results show that the proposed device can reduce the peak force and energy transmission to the foundation while increase the energy dissipation within the device. Its use can lead to an improved vibration attenuation effect than the traditional mass-spring-damper device for low-frequency vibration. The configurations of the nonlinear inerter-based device can be adjusted to obtain an anti-peak at a resonance frequency of the original system, providing superior vibration suppression performance.

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Section: Introductionmentioning

confidence: 99%

Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter

Dai

Shi

Yang

et al. 2022

Journal of Vibration and Control

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“…Qin et al 24,25 applied an auxiliary magnetic bearing to suppress lateral vibration transmission in a propulsion shafting system, and the numerical results show that the equivalent stiffness and damping of the support can be changed, resulting in reduced vibration and sound radiation of the hull. Zhu et al 26 proposed an AOS (Active Orthogonal Support) to suppress the lateral vibration transmission via the stern bearing in the shafting system. The numerical and experimental results show that the AOS with local velocity feedback control can suppress the lateral vibration transmission induced by the propeller forces.…”

Section: Introductionmentioning

confidence: 99%

Experiments on vibration transmission control in a shaft-hull system excited by propeller forces via an activemulti-strut assembly

Xie

Ren

Zhu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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The active control of lateral vibration transmission in a shaft-hull system with an active multi-strut assembly was investigated experimentally. The lateral vibration of the shafting system excited by the propeller forces transmits to the hull structure through the active multi-strut assembly, and the embedded actuator in each strut generates control forces to suppress vibration transmission. Modal testing was conducted and the characteristics of the hull structure were obtained. The excitation was exerted by two shakers mounted on the stern bearing housing. The performance of vibration suppression was verified for two control strategies that use three and six error transducers, respectively. Experimental results have demonstrated that the active multi-strut assembly in combination with the adaptive control method is able to suppress the vibration transmission from the shaft to the hull, and accordingly reduces the vibration of the hull surface. Moreover, the control strategy using six error transducers is of stronger cross coupling in the control channels as compared to that using three error transducers, which consequently makes it harder to implement active control.

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“…Xie et al (2021b, 2022) proposed an active stern support combined with active control algorithms to suppress lateral vibration transmission in a shaft-hull system. Zhu et al (2021) proposed an active orthogonal support mounted between the stern bearing and the hull to suppress the vibration transmission from the shaft to the hull with local velocity feedback control. The present studies are mainly focused on the vibration transmission control at the stern and thrust bearings in a shafting system.…”

Section: Introductionmentioning

confidence: 99%

Active vibration suppression at bearing pedestals in an elastically supported shafting system via non-contact electromagnetic actuators

Yang

Zhu

Xie

et al. 2022

Journal of Vibration and Control

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The bearings are important paths for the shaft vibration transmitting to the hull structure. A new scenario based on non-contact electromagnetic actuators mounted at bearing pedestals is proposed to suppress the vibration transmission from the shaft to the elastic foundation. The dynamic model of a shafting system with the non-contact electromagnetic actuators is established on the Hamilton’s principle. With this model, the influence of the displacement stiffnesses of the electromagnetic actuators on the vibration transmission is discussed, and the feasibility of active control is investigated. A multi-harmonic vibration suppression method is adopted and the performance is evaluated. Numerical results show that the vertical control by the electromagnetic actuators is able to attenuate the vibration transmission from the shaft to the foundation. With the addition of horizontal control, the foundation vibration is further decreased due to the reduction of power flow generated by the moments between the bearing pedestals and foundation. The results of a proof-of-principle experiment have also verified the effectiveness of the vertical control by the non-contact electromagnetic actuators in vibration transmission suppression and the foundation acceleration responses are remarkably reduced.

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

Cited by 5 publications

References 31 publications

Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter

Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter

Experiments on vibration transmission control in a shaft-hull system excited by propeller forces via an activemulti-strut assembly

Active vibration suppression at bearing pedestals in an elastically supported shafting system via non-contact electromagnetic actuators

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