Transient tribo-dynamic model for journal bearings during start-up considering 3D thermal characteristic

Xiang, Guo; Han, Yanfeng; He, Tao; Wang, Jiaxu; Xiao, Ke; Li, Junyang

doi:10.1016/j.triboint.2019.106123

Cited by 32 publications

(22 citation statements)

References 32 publications

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“…And the adiabat boundary condition is adopted in the journal. In the circumferential direction, the mixed boundary condition is adopted: where h f is the heat transfer coefficient (Xiang et al , 2020), which is equal to 200 W /( m 2 · K ) in the present simulation model.…”

Section: Methodsmentioning

confidence: 99%

“…The start-up process is validated by the comparison with Mokhtar’s experimental result (Mokhtar et al , 1977), Cui’s simulation result (Cui et al , 2018) and Xiang’s simulation result (Xiang et al , 2020), which is shown in Figure 5. The simulation rotation speed is from 0 rpm to 850 rpm in 0.3 s. Figure 5(a)–5(b) shows the comparisons of the start-up orbits of the shaft under 1.51 kN and 4.63 kN.…”

Section: Model Validationmentioning

confidence: 98%

“…where h f is the heat transfer coefficient (Xiang et al, 2020), which is equal to 200 W/(m 2 •K) in the present simulation model.…”

Section: Boundary Conditionmentioning

confidence: 99%

“…However, too little work has been devoted to combining friction and wear to the performance of journal bearing under heavy load during start-up. Xiang et al (2020Xiang et al ( , 2019 provided a transient tribo-dynamic mode considering thermal characteristics with an energy equation, predicting the temperature and shaft centerline orbit during the start-up procedure without considering the influence of wear. Chun and Khonsari (2016) focused on the wear simulation during startup and coast-down conditions.…”

Section: Introductionmentioning

confidence: 99%

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Transient-mixed lubrication model numerically for friction and wear of journal bearings under heavy load during start-up

Kang

Ding

et al. 2022

ILT

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Purpose Friction and wear are very important factors in predicting the performance of journal bearings, particularly under heavy load in start-up processes. However, there are few relevant studies on the numerical model. This study aims to establish a transient-mixed lubrication model to predict the performance of journal bearings, focusing on the friction and wear behavior under heavy load during start-up. Design/methodology/approach The average Reynold equation, three-dimensional energy equation, shear stress model for friction and Archard model for wear are coupled in the transient model by finite difference method. The linear wear simulation method is bought out to reduce the update times and the calculation time. Findings The different start-up accelerations and linear wear times set are compared and discussed, which indicates a reasonable start-up acceleration is necessary for journal bearings under heavy load during start-up, and setting linear wear times is an effective method to reduce the simulation time significantly. Furthermore, the wear profile in the start-up process spreads in both the clearance and circumferential directions, but mainly in the clearance direction, which increases the minimum film thickness and affects the friction performance. Originality/value This study is of great significance for the numerical prediction of the transient performance of journal bearings during start-up considering friction and wear.

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Section: Methodsmentioning

confidence: 99%

Section: Model Validationmentioning

confidence: 98%

“…where h f is the heat transfer coefficient (Xiang et al, 2020), which is equal to 200 W/(m 2 •K) in the present simulation model.…”

Section: Boundary Conditionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transient-mixed lubrication model numerically for friction and wear of journal bearings under heavy load during start-up

Kang

Ding

et al. 2022

ILT

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show abstract

“…The influence of surface smoothing was investigated by Sander et al 3 Wang et al 4 considered the influence of heavy-load and low-speed conditions on journal bearings. Examples for thermal elastohydrodynamic simulations of journal bearings and their applications are presented by Aksoy and Aksit, 5 Linjamaa et al, 6 Xiang et al 7 and Allmaier et al 8…”

Section: Introductionmentioning

confidence: 99%

Calculation of the actuator system in swash plate axial piston machines by a coupled multibody and TEHL simulation

Kroneis

Scheerer

Bobach

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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This paper presents a method for coupling a multibody simulation for the actuator system in axial piston machines in combination with a transient, three-dimensional, thermal elastohydrodynamic contact calculation. For the tribological investigation, the oscillating piston/cylinder contact is focused, whereby a simplified model of the actuator system simulates the loads. The developed method allows the integration of a complex tribological contact simulation under mixed friction conditions into a dynamic multibody simulation based on the Newton–Euler method. It is discussed how the accuracy of the results and the calculation time can be improved by the procedure.

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Numerical analysis on mixed lubrication performance of journal-thrust coupled microgroove bearings with different bottom shapes

Tang

Luo

Xiao

et al. 2022

J. Cent. South Univ.

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Transient tribo-dynamic model for journal bearings during start-up considering 3D thermal characteristic

Cited by 32 publications

References 32 publications

Transient-mixed lubrication model numerically for friction and wear of journal bearings under heavy load during start-up

Transient-mixed lubrication model numerically for friction and wear of journal bearings under heavy load during start-up

Calculation of the actuator system in swash plate axial piston machines by a coupled multibody and TEHL simulation

Numerical analysis on mixed lubrication performance of journal-thrust coupled microgroove bearings with different bottom shapes

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