A new rubber/UHMWPE alloy for water-lubricated stern bearings

Qin, Hongling; Zhou, Xincong; Zhao, Xinze; Xing, J.T.; Yan, Zhiming

doi:10.1016/j.wear.2015.02.016

Cited by 63 publications

(26 citation statements)

References 7 publications

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“…Shore hardness, tensile strength, tear strength and compressive property are not only important parameters for the characterization of rubber materials’ mechanical properties but also can affect its tribological properties significantly 21 22 . In general, the service temperatures of ship water-lubricated stern tube rubber bearing are usually from 0 °C to 80 °C.…”

Section: Resultsmentioning

confidence: 99%

Tribological Properties of Water-lubricated Rubber Materials after Modification by MoS2 Nanoparticles

Dong

Yuan

Wang

et al. 2016

Sci Rep

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Frictional vibration and noise caused by water-lubricated rubber stern tube bearings, which are generated under extreme conditions, severely threaten underwater vehicles’ survivability and concealment performance. This study investigates the effect of flaky and spherical MoS2 nanoparticles on tribological properties and damping capacity of water-lubricated rubber materials, with the aim of decreasing frictional noise. A CBZ-1 tribo-tester was used to conduct the sliding tests between rubber ring-discs and ZCuSn10Zn2 ring-discs with water lubrication. These materials’ typical mechanical properties were analysed and compared. Coefficients of friction (COFs), wear rates, and surface morphologies were evaluated. Frictional noise and critical velocities of generating friction vibration were examined to corroborate above analysis. Results showed that spherical MoS2 nanoparticles enhanced rubber material’s mechanical and tribological properties and, in turn, reduced the friction noise and critical velocity. Flaky MoS2 nanoparticles reduced COF but did not enhance their mechanical properties, i.e., the damping capacity, wear resistance property; thus, these nanoparticles did not reduce the critical velocity obviously, even though increased the frictional noise at high load. The knowledge gained in the present work will be useful for optimizing friction pairs under extreme conditions to decrease frictional noise of water-lubricated rubber stern tube bearings.

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Section: Resultsmentioning

confidence: 99%

Tribological Properties of Water-lubricated Rubber Materials after Modification by MoS2 Nanoparticles

Dong

Yuan

Wang

et al. 2016

Sci Rep

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“…Traditionally, the marine stern tube bearing is lubricated by lubricating oils and grease, and the water environmental pollution caused by its leakage has provoked worries, especially with the sharp increase of its applications. [1][2][3] To solve this problem, water-lubricated bearings were proposed to replace the oil-lubricated bearings and have attracted more attention in recent decades. [4][5][6][7][8][9][10] For optimal lubricating effect, a continuous water lm should be formed between the sha and the bearing.…”

Section: Introductionmentioning

confidence: 99%

Study on water resistance and tribological behaviours of basalt fibre/acrylonitrile-butadiene rubber composites under water lubrication at various temperatures

Xiao

et al. 2019

RSC Adv.

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“…Li et al 10 studied a liquid film force of a water-lubricated bearing in desalination multistage pumps and its dynamics of rotor-bearing system were also investigated. In Qin et al, 11 experimental investigations were performed to examine the physical properties for the water-lubricated rubber bearing of a marine stern. Liu and Yang 12 considered the dynamic coefficients of the long water-lubricated rubber bearing in rotating machinery, and Zhou et al 13 studied the stiffness and damping coefficients of water-lubricated rubber bearings with multiple grooves.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a rotor system coupled with water-lubricated rubber bearings

Shi

Zhu

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Dynamic behaviour is significantly important in the design of large rotor systems supported on water-lubricated rubber bearings. In this study, the mathematical model of elastohydrodynamic lubrication of the bearing is established based on the theory of hydrodynamic lubrication after considering the elastic deformation of rubber, and the dynamic characteristics of water-lubricated rubber bearings are analysed under small perturbation conditions according to the load increment method and the finite difference method. Next, the differential equation of rotor systems coupled with the water-lubricated rubber bearing is deduced using Lagrange's approach, and its critical speeds, stability, and unbalanced responses are analysed in detail. The numerical results show that several parameters, such as the eccentricity, lengthdiameter ratio, and clearance of bearing and the rotating speed of the rotor, have a great impact on the dynamic performance of water-lubricated rubber bearings, and this influence cannot be ignored, especially in the case of large eccentricity ratios. The dynamic characteristics of rotor systems guided by water-lubricated rubber bearings reveal that the critical speeds are much lower than the ones under the rigid supports because of the elastic deformation, and they also indicate that the rotor system supported on water-lubricated rubber bearings has a weaker stability. In addition, the steady-state responses of the rotor system are analysed when the mass unbalance of the propeller exists, and the effect of the thickness of the rubber liner is also considered.

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A new rubber/UHMWPE alloy for water-lubricated stern bearings

Cited by 63 publications

References 7 publications

Tribological Properties of Water-lubricated Rubber Materials after Modification by MoS2 Nanoparticles

Tribological Properties of Water-lubricated Rubber Materials after Modification by MoS2 Nanoparticles

Study on water resistance and tribological behaviours of basalt fibre/acrylonitrile-butadiene rubber composites under water lubrication at various temperatures

Dynamics of a rotor system coupled with water-lubricated rubber bearings

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