...., 1992), including analytical performance prediction methods, investigations of static and dynamic characteristics under different restrictor types and lubrication conditions (San Andres, 1991 ; Jain et al., 1992), as well as experimental measurements (Martin, 2004) and equivalent stiffness...

... the temperature and dynamic characteristics of bearings. In recent years, researchers have investigated two-phase flow within bearing cavities. Wang et al. (2022) established a dynamic model for ball bearings, compared with isothermal turbulent lubrication, thermal effects would result in higher...

...Yangpeng Li; Xiaohui Lin; Chibin Zhang; Shuyun Jiang Purpose The elastic ring squeeze film damper ( ERSFD ) is a key element of the high-speed rotor system in aero-engine. By far, the dynamic characteristics of ERSFD has not been investigated throughout. The purpose of this study...

.... To overcome this problem, this study proposes a hybrid water-lubricated HGJB and aims to investigate its dynamic characteristics. Design/methodology/approach A hybrid lubrication model applicable to the hybrid water-lubricated HGJB is established based on the boundary fitted coordinate system, which...

...Hongyang Hu; Huijun Wu; Jichao Wang; Jiamin Liu Purpose To enhance the load capacity and dynamic characteristics of gas foil conical bearings (GFCBs), two kinds of microgrooves (sector and Fibonacci-like shape) are arranged on the top foil surface. Design/methodology/approach The Reynolds...

...Yunlei Wang; Zhishuang Hao; Jiuhui Wu Purpose This study aims to investigate the dynamic characteristics of a high-speed mechanical seal by considering the flow regime, cavitation phenomenon and inertia effect. Design/methodology/approach Based on the high-speed conditions of a mechanical seal...

... disturbance method is used for calculating the dynamic characteristics. The static and dynamic characteristics, including recess pressure, flow of lubricating oil, carrying capacity, pitch moment, yaw moment, dynamic stiffness and damping, are comprehensively analyzed. Findings The designed closed...

... in equations (1) and (2) : Spherical hybrid sliding bearings Accelerated rotor systems Shaft center trajectory Dynamic characteristics Figure 1 3D model of spherical hybrid sliding bearings In the study of bearing rotor dynamics, the relevant research studies are as follows: Du...

...Liu Fuyu; Yu Bo; Li Yongfan; Ren Baojie; Hao Muming; Li Zhentao; Li Xiaozu Purpose The purpose of this paper is to study the dynamic characteristics of mechanical face seals with liquid-lubricated inclined elliptical grooves. Design/methodology/approach The steady-state and perturbation...

...Junchao Zhu; GuangCheng Wei; Chen Zong; DaKuan Xin Purpose This paper aim to take the ship shaft stern bearing as the research object, and studies the influence of journal axial vibration on bearing dynamic characteristics under different misaligned angles and rotation speeds. Design...

... 09 2021 05 11 2021 23 12 2021 31 12 2021 © Emerald Publishing Limited 2022 Emerald Publishing Limited Licensed re-use rights only Dam bearing Dynamic characteristics Micropolar Eccentricity Coupling number EDB Lubrication Stability analysis Hydrodynamic journal...

...Fan Zhang; Peng Yin; Yuyang Liu; Jianmei Wang Purpose The purpose of this paper is to study the influence of pivot stiffness on the dynamic characteristics of tilting-pad journal bearings (TPJBs) and the stability of the bearing-rotor system. Design/methodology/approach A theoretical numerical...

...Jianzhong Cui; Hu Li; Dong Zhang; Yawen Xu; Fangwei Xie Purpose The purpose of this study is to investigate the flexible dynamic characteristics about hydro-viscous drive providing meaningful insights into the credible speed-regulating behavior during the soft-start. Design/methodology/approach...

...Bo Yu; Muming Hao; Sun Xinhui; Zengli Wang; Liu Fuyu; Li Yongfan Purpose The purpose of this paper is to investigate the dynamic characteristics of spiral groove liquid film seal under the effect of thermal–fluid–solid coupling. Design/methodology/approach The dynamic analysis model of spiral...

... Reflux orifice Damping factor Static characteristics Dynamic characteristics Nomenclature R = bearing radius; L = bearing length; c = radius clearance; µ = dynamic viscosity of air; ρ_a = atmosphere density; φ...

...Guo Xiang; Yijia Wang; Cheng Wang; Zhongliang Lv Purpose In this study, the dynamic characteristics of the water-lubricated rubber bearing considering asperity contact are numerically studied, including water-film stiffness and damping coefficients and plastic-elastic contact stiffness coefficient...

.... Design/methodology/approach The steady-state performance and dynamic characteristics of superellipse groove dry gas seal and S-DGS are compared numerically at a high-speed condition. The optimized superellipse grooves for maximum steady-state film stiffness and dynamic stiffness coefficient are obtained...

...Yan Li; Desheng Zhang; Fuhai Duan Purpose The purpose of this paper is to investigate dynamic characteristics of opposed-conical gas-dynamic bearings considering five degree-of-freedom motion, including translation and tilt. Design/methodology/approach The steady-state Reynolds equation...

...@163.com 16 07 2019 20 08 2019 24 08 2019 © Emerald Publishing Limited 2019 Emerald Publishing Limited Licensed re-use rights only Hydrostatic bearings are widely used in precision and ultra-precision machining. The research on the dynamic characteristics...

... bearing stability. Finite element method Hydrodynamic journal bearing Dynamic characteristics Surface texturing Surface textures Stiffness coefficient FEM Damping coefficient Stability threshold speed Gourav Jamwal can be contacted at: gouravvjamwal@gmail.com 06 05 2019...