Simulation and experimental investigations on water-lubricated squeeze film damping stern bearing

Ouyang, Wu; Yan, Qi‐Long; Kuang, Junxin; Jin, Yong; Peng, Weicai

doi:10.1007/s40430-020-02785-6

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…It is not sufficient to achieve the reduction goal of the frictional vibration and noise only by material modification, because the soft lining and rubber layer would deform and lose the damping effect under the heavy or bias load. The contradiction between high load capacity and high damping needs to be solved by carrying out the decoupling design, which requires adding an attachment structure to the bearing bushing or on the outer wall of the bearing to isolate vibration [287].…”

Section: Damping-enhanced Structurementioning

confidence: 99%

“…As shown in Fig. 14, the attachment structure must have a high stiffness k 2 to provide high load carrying capacity, and a large damping c 2 to achieve energy dissipation [287].…”

Section: Damping-enhanced Structurementioning

confidence: 99%

“…As shown in Fig. 15, the integral squeeze film damper (ISFD) technology is one of the effective methods for WLBs to achieve this damping-enhanced structure [287]. It is effective for the retained material S-type ISFD with the compact structure to solve the problem of nonlinear vibration and low critical speed of the rotor system [288].…”

Section: Damping-enhanced Structurementioning

confidence: 99%

“…It is effective for the retained material S-type ISFD with the compact structure to solve the problem of nonlinear vibration and low critical speed of the rotor system [288]. The Wuhan University of Technology further proposed the application of magnetic fluid to SFD to achieve adjustable and controllable damping of the bearing [287,289]; Mayank Tiwari et al [290] made an ISFD filled with magnetorheological fluid and verified its vibration damping effect under different operating conditions through experiments.…”

Section: Damping-enhanced Structurementioning

confidence: 99%

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Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

et al. 2023

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With the development of green tribology in the shipping industry, the application of water lubrication gradually replaces oil lubrication in stern bearings and thrust bearings. In terms of large-scale and high-speed ships, water-lubricated bearings with high performance are more strictly required. However, due to the lubricating medium, water-lubricated bearings have many problems such as friction, wear, vibration, noise, etc. This review focuses on the performance of marine water-lubricated bearings and their failure prevention mechanism. Furthermore, the research of marine water-lubricated bearings is reviewed by discussing its lubrication principle, test technology, friction and wear mechanism, and friction noise generation mechanism. The performance enhancement methods have been overviewed from structure optimization and material modification. Finally, the potential problems and the perspective of water-lubricated bearings are given in detail.

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Section: Damping-enhanced Structurementioning

confidence: 99%

“…As shown in Fig. 14, the attachment structure must have a high stiffness k 2 to provide high load carrying capacity, and a large damping c 2 to achieve energy dissipation [287].…”

Section: Damping-enhanced Structurementioning

confidence: 99%

Section: Damping-enhanced Structurementioning

confidence: 99%

Section: Damping-enhanced Structurementioning

confidence: 99%

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Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

et al. 2023

Self Cite

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“…Wang et al devised a compensation method for the deformation caused by the offloading of ship stern bearings, thereby augmenting their bearing capacity [21]. Ouyang et al innovated a damping-type water-lubricated bearing structure and validated its efficacy in mitigating vibrational performance through experimental verification [22]. Xie et al formulated fluid-structure interaction dynamic models for the bearing system and methodically examined the influence of multi-coupling factors pertaining to lubrication parameters [23].…”

Section: Introductionmentioning

confidence: 99%

The Utilization of a Damping Structure in the Development of Self-Adaptive Water-Lubricated Stern Bearings

Liu,

Zhou,

et al. 2024

Lubricants

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A novel water-lubricated stern bearing damping structure with self-adaptive performance is proposed to meet the load-balancing and vibration-damping requirements of water-lubricated bearings. This innovative damping structure comprises an elastic element and a damping alloy layer. The elastic element facilitates the static and dynamic load sharing of the stern bearing, mitigates the edge effects, ensures even distribution of the contact pressure along the axial direction, and enhances the overall bearing performance. Consequently, it prolongs the service life of the bearing and minimizes friction-induced stimulation. The damping alloy layer effectively attenuates the transmission of shafting vibrations to the foundation through the bearing, optimizing the vibration transmission characteristics. Leveraging the finite element model, an in-depth analysis of the compensation capability of the turning angle and damping performance of the adaptive stern bearing was conducted. The findings reveal that when the thickness of the elastic element is increased from 10 mm to 40 mm, the maximum contact pressure can be reduced by 12.53%. When the length ratio of the elastic element is reduced from 0.7 to 0.4, the maximum contact pressure is reduced by 12.42%. Therefore, increasing the thickness and decreasing the length of the elastic element in the adaptive damping device enhance the load performance, improve the compensation capabilities, and reduce the bearing wear, thereby promoting greater bearing uniformity. Furthermore, the adaptive vibration-damping device optimizes the vibration transmission characteristics from the propeller stimulation to the bearing node. The computational results demonstrate a noteworthy reduction in the speed, acceleration, and displacement responses at the first-order natural frequency, decreasing by 58.82%, 58.90%, and 58.86%, respectively. This substantial reduction in the vibration response at the first-order natural frequency signifies the effective mitigation of vibrations in the system.

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Simulation analysis on mechanical properties of water-lubricated damping bearing of underwater vehicle

Liu

2022

J Braz. Soc. Mech. Sci. Eng.

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Simulation and experimental investigations on water-lubricated squeeze film damping stern bearing

Cited by 6 publications

References 22 publications

Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

The Utilization of a Damping Structure in the Development of Self-Adaptive Water-Lubricated Stern Bearings

Simulation analysis on mechanical properties of water-lubricated damping bearing of underwater vehicle

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