Numerical simulation of ball bearing flow field using the moving particle semi-implicit method

Wu, Wei; Wei, Chunhui; Yuan, Shuai

doi:10.1080/19942060.2021.2008499

Cited by 19 publications

(10 citation statements)

References 36 publications

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“…Sun et al 27 studied the flow mechanism of straight-blade agitators through this numerical calculation method. Wu et al 28 simulated the oil distribution in the bearing cavity by the MPS numerical calculation method, and verified the accuracy of the calculation results by setting up a visual test bench. Xie et al 29 through this numerical calculation method, researched the churning torque loss of the secondary reducer under different working conditions.…”

Section: Introductionmentioning

confidence: 93%

Analysis of churning losses distribution of hydraulic pump in engineering vehicles using MPS method

Wei

Gui³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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The power losses of the hydraulic pump in engineering vehicle include mechanical losses, churning losses, and volume losses. The proportion of churning losses to power losses increases markedly, with the continuous improvement of the rotating speed of the hydraulic pump. The churning losses of the hydraulic pump are calculated by moving particle semi-implicit (MPS) method. It indicates that the inclination angle, speed, and oil content will significantly influence the churning losses. The churning torque and power losses of each rotating part increase with the pump speed. The churning losses of the cylinder block are the largest, followed by the retainer and slippers. The churning losses of pistons and shaft are small. With the decrease of oil volume, the churning losses decrease. With the decrease of the inclined angle of the swashplate, the total churning losses decreases. When the oil content is 70% of the full oil, the churning losses of the hydraulic pump is reduced by 57.4%. It provides guidance for the design of the hydraulic pump of high-power density for engineering vehicles and a new numerical calculation method for churning losses of the hydraulic pump.

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Section: Introductionmentioning

confidence: 93%

Analysis of churning losses distribution of hydraulic pump in engineering vehicles using MPS method

Wei

Gui³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…However, the vibrations of the electric motor and the oil pump can affect the operation of the heavy buoyancy regulator. [25][26][27][28][29] The vibration causes noise pollution of the heavy buoyancy regulator. To solve this problem, it is necessary to install the isolators between the electric motor support system and the plate for vibration control.…”

Section: Problem Descriptionmentioning

confidence: 99%

A vibration analysis and control method of a heavy buoyancy regulator in an underwater vehicle

Liu

Yang

Liu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Vibration analysis and control are the main issues of heavy buoyancy regulators, which can improve the runtime performance and reduce the power loss. It is an effective approach to add rubber-based isolators to control the vibrations of the heavy buoyancy regulator. However, the vibration reduction effect of the rubber-based isolators is closely related to their structures and material performance. In this study, according to the geometrics of the connecting components, the structures of the rubber-based isolators are designed by using the vibration theory. The rubber-based isolators with different structures and hardness are considered in the finite element models, whose results are used to achieve the optimal design cases. The vibration isolation transmissibility and static deformation ratio of the rubber-based isolator are discussed. The frequency–displacement characteristics of the heavy buoyancy regulator are also analyzed. The results show that the two presented rubber-based isolators can be used to control the vibrations of the heavy buoyancy regulator. It seems that the presented method can be used for the vibration analysis and control of the heavy buoyancy regulators in underwater vehicles.

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“…In the working process of bearings, bearing friction moments can affect the relative movements and dynamic loads between the mating components (Russell and Sadeghi, 2022). The bearing friction moments are related to many factors such as the bearing parameters, lubrication conditions, manufacturing errors and so on (Liu et al, 2023;Liu and Xu, 2022;Wu et al, 2022). A study work for analyzing the effects of the friction moments on vibration characteristics of the rotor systems is helpful for reducing the unhealthy vibrations caused by the bearing friction moments.…”

Section: Introductionmentioning

confidence: 99%

“…The bearing friction moments are related to many factors such as the bearing parameters, lubrication conditions, manufacturing errors and so on (Liu et al. , 2023; Liu and Xu, 2022; Wu et al. , 2022).…”

Section: Introductionmentioning

confidence: 99%

A dynamic model considering the time-varying friction moment of a flexible rotor system

Liu,

An,

Fancheng

et al. 2023

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PurposeBearing friction moments are important factors that affect the vibrations of rotor systems. The bearing friction moments are related to the dimension parameters, lubrication conditions and manufacturing errors of support bearings. This work studies the effects of the bearing friction moments on the vibrations of rotor systems.Design/methodology/approachThe rotor is separated into several shaft elements for formulating a flexible rotor. The time-varying friction moment (TFM) is affected by the time-varying contact loads. The vibrations of FRS from the TFM and Palmgren's friction moment (PFM) calculation methods are compared. Moreover, the effects of the rotor offset and radial clearance on the frequency-amplitude characteristics of FRS are studied.FindingsThe TFM method is more consistent with the actual operation mechanisms. The rotor offset and radial clearance can significantly affect the nonlinear vibrations of FRS. This work provides a new reference and research method for the vibration analysis of rotor systems considering the friction effects.Originality/valueThe elastohydrodynamic lubrication (EHL), elastic hysteresis and differential sliding are considered. A flexible rotor system (FRS) dynamic model considering the TFM is proposed. The vibrations of FRS from the TFM calculation method and empirical calculation formula are compared. The effects of the rotor offset and radial clearance on the frequency–amplitude characteristics of FRS are studied.

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Numerical simulation of ball bearing flow field using the moving particle semi-implicit method

Cited by 19 publications

References 36 publications

Analysis of churning losses distribution of hydraulic pump in engineering vehicles using MPS method

Analysis of churning losses distribution of hydraulic pump in engineering vehicles using MPS method

A vibration analysis and control method of a heavy buoyancy regulator in an underwater vehicle

A dynamic model considering the time-varying friction moment of a flexible rotor system

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