Stability analysis of hydrodynamic bearing with herringbone grooved sleeve

Chen, Shih‐Kang; Chou, Hsien-Chin; Yuan, Kun

doi:10.1016/j.triboint.2012.05.015

Cited by 33 publications

(6 citation statements)

References 10 publications

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“…6. Green's theorem is utilized to reduce the second-order Reynolds equation to a first-order linear equation (Chen et al 2012). An eight-point discrete grid finite difference method (FDM) is applied to obtain air pressure (Feng et al 2015).…”

Section: Numerical Schemementioning

confidence: 99%

Thermohydrodynamic analysis of micro spherical spiral groove gas bearings under slip flow and surface roughness coupling effect

Feng

et al. 2016

Microsyst Technol

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Section: Numerical Schemementioning

confidence: 99%

Thermohydrodynamic analysis of micro spherical spiral groove gas bearings under slip flow and surface roughness coupling effect

Feng

et al. 2016

Microsyst Technol

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“…Recently, many researchers have investigated the characteristics of water-lubricated hydrodynamic journal bearings by theoretical and experimental analysis, such as load capacity, 17,18 friction coefficient, 19,20 volume flow rate, 20 stiffness and damping coefficients, 21,22 and stability. 23 The hydrodynamic lubrication models usually are established by the classic Reynolds equation 24,25 or general Navier–Stokes equations, 26,27 and solved by the finite difference method, 24 finite-element method, 28 finite volume method, 29 or boundary element method. 30 The influence of turbulence, 31,32 misalignment, 18,33 cavitation, 21,29 and thermal effects 24,31 on the characteristics of journal bearings had been analyzed systematically.…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic characteristics and stability analysis of high-speed water-lubricated hydrodynamic journal bearings

Guo

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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The purpose of this paper is to analyze the influence of turbulent, inertia, and misaligned effects on the static and dynamic characteristics and stability of high-speed water-lubricated hydrodynamic journal bearings. Based on the Navier–Stokes equation, the mixing-length theory, and the essential assumption that the velocity profile is not strongly affected by inertia force, the fluid lubrication model with turbulent, inertia, and misaligned effects is established, and then the stability analysis of bearings is carried out based on the equation of motion with four degrees of freedom. The model is solved by the finite difference method and the numerical results are compared under different operating conditions. The results show that the turbulent effect greatly increases the load capacity, power consumption, stiffness and damping coefficients, and stability of bearings, and the inertia effect significantly increases the volume flow rate of bearings, and the misaligned effect increases the load capacity, stiffness and damping coefficients, and stability of bearings. In high rotary speed and moderate eccentricity ratios, the influence of the inertia effect on the load capacity, stiffness coefficients, and stability cannot be neglected.

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“…Jang and Chang (2000) analyzed the performance of a herringbone grooved journal bearing in the spindle motor of a computer hard disk drive including the effects of cavitation by using the finite volume method with mesh fitting the groove profiles. Many other references (Wu et al, 2004;Lee et al, 2004;Chao and Huang, 2005;Chen et al, 2012) also studied the lubrication performance of MHGJB by using the FDM in the non-orthogonal coordinate system with skew mesh. However, it should be pointed out that there exists some numerical singularity for the MHGJB at the critical line of two skew coordinate systems if groove fitting meshes are used, especially for the large skew angle of herringbone grooves.…”

Section: Introductionmentioning

confidence: 99%

Leakage-free optimization of micro herringbone grooved journal bearings with a virtual node method

Luo

Zheng²,

Tang

et al. 2021

ILT

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Purpose This study aims to develop a new method to treat the numerical singularity at the critical nodes of two skew coordinates, and optimize the leakage of micro herringbone grooved journal bearings (MHGJBs) with this method. Design/methodology/approach A side leakage numerical algorithm is proposed by using the skew meshes with a virtual node (SMVN) method to evaluate the effects of groove angle, bank/groove ratio, groove depth and groove number on load capacity, friction and side leakage of MHGJB. Findings The SMVN method is effective in treating the numerical singularity at the critical nodes of two skew coordinates. Besides, a group of optimized parameters of micro herringbone groove is obtained which can not only minimize the side leakage but also improve the load capacity and friction force. Originality/value A virtual node method was proposed, which can significantly improve the calculation accuracy in the side leakage model.

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Stability analysis of hydrodynamic bearing with herringbone grooved sleeve

Cited by 33 publications

References 10 publications

Thermohydrodynamic analysis of micro spherical spiral groove gas bearings under slip flow and surface roughness coupling effect

Thermohydrodynamic analysis of micro spherical spiral groove gas bearings under slip flow and surface roughness coupling effect

Static and dynamic characteristics and stability analysis of high-speed water-lubricated hydrodynamic journal bearings

Leakage-free optimization of micro herringbone grooved journal bearings with a virtual node method

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