A dynamic model for the frictional power loss analysis of a synchronous motor rotor-bearing system DOI

Yajun Xu,

Yang Yang, Jing Liu

et al.

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Permanent magnet synchronous motors (PMSMs) are broadly adopted as the power sources of electric underwater vehicles. However, frictional forces supporting bearings for PMSMs result in loss, which can significantly affect sail range and duration vehicle. This work presents a novel approach to quantitatively evaluate loss PMSM by developing an electromechanical dynamic model. The model considers lateral rotational degrees freedom inner raceway rolling balls angular contact ball (ACBBs). external loads on rotor, including unbalanced magnetic pull (UMP), electromagnetic torque, nonlinear forces, mixed elastohydrodynamic lubrication (EHL) friction ACBBs, also considered. modelling method is validated Simpack JMAG. Based simulation results, mechanisms bearing clearance surface roughness influencing investigated. study provide effective guidance design high-efficiency

Language: Английский

A time-domain piecewise calculation method of a time-varying isolation platform DOI
Jiahui Wang, Jing Liu, Guang Pan

et al.

Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 228, P. 112416 - 112416

Published: Feb. 4, 2025

Language: Английский

Citations

0
The effect of the stiffeners of the external-pressure tank in a buoyancy regulator on the inside liquid sloshing DOI
Chiye Yang,

Hengtai Ni,

Jing Liu

et al.

Engineering Computations, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Purpose The purpose of this paper is to research the effect external-pressure tank’s inside-stiffeners on liquid sloshing in tank. Design/methodology/approach This study adopts volume fluid (VOF) method and control variable impacts shape, length height stiffeners response inside Findings anti-sloshing performance T-shape stiffener greater than ring-shape stiffener. Through parametric studies, it found that different geometry parameters (the height, width stiffener) have water sloshing. Originality/value are usually used tank large unmanned underwater vehicle (LUUV) meet requirements for withstanding external pressure. In practical engineering, has been a certain external-pressured LUUV, but there lack systematic area. focuses providing new insights optimization design structures tanks LUUV.

Language: Английский

Citations

0
Dynamic modeling of a spline-shaft system including time-varying fretting friction DOI
Xinbin Li,

Jianyu Liu,

Jing Liu

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110192 - 110192

Published: April 1, 2025

Language: Английский

Citations

0
A dynamic model for the frictional power loss analysis of a synchronous motor rotor-bearing system DOI

Yajun Xu,

Yang Yang, Jing Liu

et al.

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Permanent magnet synchronous motors (PMSMs) are broadly adopted as the power sources of electric underwater vehicles. However, frictional forces supporting bearings for PMSMs result in loss, which can significantly affect sail range and duration vehicle. This work presents a novel approach to quantitatively evaluate loss PMSM by developing an electromechanical dynamic model. The model considers lateral rotational degrees freedom inner raceway rolling balls angular contact ball (ACBBs). external loads on rotor, including unbalanced magnetic pull (UMP), electromagnetic torque, nonlinear forces, mixed elastohydrodynamic lubrication (EHL) friction ACBBs, also considered. modelling method is validated Simpack JMAG. Based simulation results, mechanisms bearing clearance surface roughness influencing investigated. study provide effective guidance design high-efficiency

Language: Английский

Citations

0