Stick-slip behaviours of water lubrication polymer materials under low speed conditions

Dong, Conglin; Shi, Lichun; Li, Lvzhou; Bai, Xiuqin; Yuan, Chengqing; Tian, Yu

doi:10.1016/j.triboint.2016.10.027

Cited by 104 publications

(38 citation statements)

References 30 publications

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“…Despite the fact that the engineers today have a lot of knowledge and are able to design a correctly operating sliding bearing, every year failures or premature wear of the sliding couples are reported. Common causes of failure are: errors in assembly resulting stress concentration caused mostly by the misalignment of the bushing and the shaft, 1–3 unfavorable bearing interspace geometry, especially lubrication grooves distributed around the perimeter, 4,5 excessive bearing clearance and other bushing shape errors due to assembly by means of a thermo compression method (bush is cooled before installation, for most of the polymers thermal expansion coefficient is high, so it helps to shrink bush and install it easy in housing), improper sliding couple or hard operation conditions, 6,7 improper lubrication, not sufficient flow of the medium causing overheating of the sliding couple, 8 solid particles in the lubricating liquid, 9,10 corrosion, 11 etc. …”

Section: Introductionmentioning

confidence: 99%

Experimental research on marine oil-lubricated stern tube bearing

Litwin

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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Bearings of propeller shafts are very crucial elements of the propulsion system of each of the ships. The safety of shipping depends on their durability and reliability. The new legal restrictions mean that today we are looking for environmentally friendly solutions. That is why water-lubricated bearings are becoming more and more popular. So, will oil-lubricated shaft bearings belong to the past? The bearing with a white metal bushing lubricated with mineral oil, which was subjected to experimental tests, has a number of advantages. First of all, it works in the area of full fluid friction, and in typical shipbuilding conditions it has a significant excess of hydrodynamic load capacity. Therefore, replacing mineral oil with an environmentally friendly lubricant with a similar viscosity seems to be a promising solution. Motion resistance larger than that in water-lubricated bearings compensates for the reliability and durability of this solution.

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Section: Introductionmentioning

confidence: 99%

Experimental research on marine oil-lubricated stern tube bearing

Litwin

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Waterlubricated bearings have good wear resistance, stable chemical property, and environment friendliness which are being used in vessel propulsion system, hydropower, water pumps, and other industrial sectors. Water-lubricated rubber bearings are used to support the propeller shaft, and researches show that propulsion rotor system is the most important factor of vessel noise [1,2]. Dynamic characteristics of waterlubricated rubber bearings affect the dynamic behavior of propeller rotor system, which directly determine operation state and quality of propulsion system [3,4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Dynamic Performance of Water‐Lubricated Rubber Bearings with Local Contact

Ouyang

Zhang

Jin

et al. 2018

Shock and Vibration

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Accurate dynamic characteristic coefficients of water-lubricated rubber bearings are necessary to research vibration of ship propulsion system. Due to mixed lubrication state of water-lubricated rubber bearings, normal test rig and identification method are not applicable. This paper establishes a test rig to simulate shaft misalignment and proposes an identification method for waterlubricated rubber bearings, which utilizes rotor unbalanced motion to produce self-excited force rather than artificial excitation. Dynamic performance tests under different conditions are operated. The results show that when rotational speed is less than 700 r/min, even if specific pressure is 0.05 MPa, it is difficult to form complete water film for the rubber bearing which was investigated, and contact friction and collision of the shaft and bearing are frequent. In the mixed lubrication, water film, rubber, and contact jointly determine dynamic characteristics of water-lubricated rubber bearings. The contact condition has a significant effect on the bearing stiffness, and water film friction damping has a significant effect on bearing damping. As for the particular investigated bearing, when rotational speed is in the range of 400∼700 r/min and specific pressure is in the range of 0.03∼0.07 MPa, bearing stiffness is in the range of 5.6∼10.06 N/ m and bearing damping is in the range of 1.25∼2.02 Ns/ m.

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“…The low cost, environmental friendliness, and the excellent cooling effect of water have attracted many researchers to investigate the tribological performance of different materials under water lubrication [5][6][7][8][9][10][11][12][13]. Lei et al evaluated the tribological behavior of micro and nano-crystalline diamond films in water lubricating conditions [5].…”

Section: Introductionmentioning

confidence: 99%

“…Gao et al investigated the tribological behaviors of epoxy composites under water lubrication conditions at both varying and constant sliding speeds [6]. Dong et al studied the stick-slip behaviors of ultra-high molecular weight polyethylene, synthetic rubber and fiber resin composite polymer materials with ZCuSn 10 Zn 2 plates under water-lubricated conditions [7]. Ma et al studied the friction between a 440C stainless steel ball and a 440C stainless steel plate in water lubrication [8].…”

Section: Introductionmentioning

confidence: 99%

Water Pool Behaviors of Water Lubricating for Glass/Steel Point Contact

2017

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Abstract:The behavior of pools of water for lubrication under a point of contact between a glass disk and a steel ball is studied here, employing a home-built apparatus. A deformed water pool is found to form around the contact region under different rolling speeds. To investigate the effect of rolling speed on the water pool, two parameters (advancing angle and receding angle) are introduced to describe the shape of the water pool. Two distinct glass surfaces, namely a smooth surface and a microgrooved surface, are observed. In the case of the smooth surface, the advancing/receding angle of the water pool significantly decreases with increasing rolling speed before the rolling speed reaches a critical value (80 mm/s). At speeds higher than 80 mm/s, the water pool is in a stable state and the advancing/receding angle remains steady. In the case of the microgrooved surface, the influence of the microgroove on water lubricating flow disappears when the rolling speed reaches a critical value (1030 mm/s).

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Stick-slip behaviours of water lubrication polymer materials under low speed conditions

Cited by 104 publications

References 30 publications

Experimental research on marine oil-lubricated stern tube bearing

Experimental research on marine oil-lubricated stern tube bearing

Experimental Study on the Dynamic Performance of Water‐Lubricated Rubber Bearings with Local Contact

Water Pool Behaviors of Water Lubricating for Glass/Steel Point Contact

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