Wear characteristics of water-lubricated SiC journal bearings in intermittent motion

Andersson, Peter; Nikkilä, A.-P.; Lintula, Pekka

doi:10.1016/0043-1648(94)90219-4

Cited by 17 publications

(8 citation statements)

References 3 publications

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“…Existing research shows that the material of water-lubricated bush material is one of the key problems affecting bearing life (Litwin, 2009). Andersson et al (1994) discovered that SiCbased materials can be well used for sliding bearing solutions under harsh water-lubricated conditions. Jia et al (2004) found that the wear resistance of bronze graphite composites under water lubrication was much better than that under dry friction with stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigations on the wear behavior of water-lubricated bearings with different materials

Wang

Han

Tang

et al. 2022

ILT

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Purpose The purpose of this paper is to verify the effectiveness of the proposed transient mixed lubrication and wear coupling model [mixed lubrication and wear (MLW) coupling model] under water lubricated conditions by comparing with the experimental results. Design/methodology/approach Water lubricated bearings are the key parts of the transmission system of an underwater vehicle and some surface ships. In this study, the friction and wear behaviors of rubber, nylon and polyether ether ketone (PEEK) samples with stainless steel underwater lubrication were compared by using ring-block contact structure on multifunctional friction and wear test bench-5000 friction and wear tester. Findings The results show that the transient wear depth and wear amount of PEEK, nylon and rubber samples under water lubrication are in good agreement with the calculated results of the theoretical model, which verifies the rationality and scientific nature of the MLW coupling model. Thus, the numerical model is applicable for the wear prediction of the journal bearing under water-lubricated conditions. Furthermore, numerical and experimental results reveal that the anti-wear performance among three water-lubricated materials can be ranked by: PEEK > nylon > rubber. Originality/value It is expected that this study can provide more information for experimental and numerical research of water-lubricated bearings under water-lubricated conditions.

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigations on the wear behavior of water-lubricated bearings with different materials

Wang

Han

Tang

et al. 2022

ILT

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“…Non-linearity of wear equation (16) has to be taken into account in cases like sliding wear of ceramics in air. 32 The equation (16) is valid for unlubricated wear.…”

Section: Mathematical Model Of Running-in Processmentioning

confidence: 99%

Wear of water lubricated silicon nitride in ball on disc test

Iliev¹

2010

Tribology - Materials, Surfaces & Interfaces

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The ball on disc test configuration is preferred to the flat ended pin on disc because the ball is self-aligned and measurement of wear on the ball is of higher accuracy, compared to the pin. Silicon nitride, sliding on itself in water, was tested with the ball on disc tribometer. Misalignment of the test ball from its proper position behind the disc axis of rotation leads to friction measurement errors, which were analysed. The disc wears non-uniformly, the wear track depth and width vary in longitudinal direction by a factor of 2-3. The uneven wear of the disc is explained by the combined effects of sliding surface anisotropy and disc material nonhomogeneity on the one hand and by the friction force and the normal load periodic variation on the other hand. During the running-in process at particular sliding velocity amplitude modulated friction force was observed and an explanation by the mechanical vibration 'beating' phenomenon was suggested. Predictive model of the running-in process is presented, which describes the evolution of the ball wear scar area, the contact pressure and the wear rate. The model predictions are consistent with the experimental data. List of symbolsA wear track cross-sectional area, m 2 F friction force, N F h friction force in hydrodynamic regime of lubrication, N J 1 ball depth of wear, m n number of plate revolutions P normal load, N r ball wear scar radius, m R plate wear track radius, m s sliding distance, m t time, s v sliding velocity, m s 21 V 1 ball volume of wear, m 3 V 2 plate volume of wear, m 3 W 1 ball wear rate, mm 3 N 21 m 21 W 2 plate wear rate, mm 3 N 21 m 21 W b ball wear rate at boundary regime of lubrication, mm 3 N 21 m 21 W t total wear rate, mm 3 N 21 m 21 m coefficient of friction m b coefficient of friction in boundary regime of lubrication m h coefficient of friction in hydrodynamic regime of lubrication r ball radius, m

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“…Anderson [25][26][27] studied wear characteristics of water-lubricated ceramic bearings and found that the wear was little after 10000 times of start-stop. Wong et al [28] and Chen et al [29] found out that the friction coefficient of ceramic bearings which were made of SiC, Si 3 N 4 , Al 2 O 3 and ZrO 2 was less than 0.03 under the condition of water lubricated, and the wear was very small.…”

Section: Introductionmentioning

confidence: 98%

Thermal Characteristics of Water-Lubricated Ceramic Hydrostatic Hydrodynamic Hybrid Bearings

Liu

Zhao

et al. 2016

Tribol Lett

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The heat caused by the shear of oil films of hydrostatic hydrodynamic hybrid bearings leads to decreasing of bearing clearance and even seizure especially at high speeds, which limit the speed of bearing and the DN value. Compared with metal materials widely used in hydrostatic hydrodynamic hybrid bearings, ceramic materials have low coefficient of thermal expansion. Hence, in this study, ceramic bearing bushes with low coefficient of thermal expansion are employed to alleviate the decrease of bearing clearance due to the heat of oil film. And the change of bearing clearance and seizure temperature of the traditional metal bushes are also compared with one of the ceramic bushes. Firstly, a test rig for water-lubricated ceramic hydrostatic hydrodynamic hybrid bearings is built up, on which the result of simulation is verified and the boundary conditions of inlet and outlet temperature of bearings are tested for simulation. Secondly, the temperature rise, the thermal deformation, the bearing clearance and the seizure temperature of ceramic bushes (silicon nitride, aluminum oxide and silicon carbide) and a metal bush of tin bronze are investigated and compared through finite element method. The results show that the bearing's working temperature is increased by using ceramic bearing bushes. And, compared with the bearing bush of tin bronze, the maximum working temperature of the bearing bush of silicon nitride, aluminum oxide, silicon carbide is improved 21.7, 27.2 and 30.7 %, respectively.

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Wear characteristics of water-lubricated SiC journal bearings in intermittent motion

Cited by 17 publications

References 3 publications

Numerical and experimental investigations on the wear behavior of water-lubricated bearings with different materials

Numerical and experimental investigations on the wear behavior of water-lubricated bearings with different materials

Wear of water lubricated silicon nitride in ball on disc test

Thermal Characteristics of Water-Lubricated Ceramic Hydrostatic Hydrodynamic Hybrid Bearings

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