Influences of operation parameters on noise of journal bearing with compound texture considering lubricant thermal effect

Meng, Fanzhi; Shu, Ruihong; Chen, Lin

doi:10.1177/1350650119868910

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…[19][20][21] However, the compound texture effect on the dynamic characteristic of the journal bearing has not been studied to date. Since the compound texture shows positive effects on static performances of the journal bearing, [16][17][18][19][20][21] it is essential to explore its effect on the dynamic characteristic of the journal bearing. In the present work, the investigation of the compound texture effect on the dynamic characteristics of the journal bearing was conducted under the consideration of the elastic deformation and cavitation effects.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of compound textured journal bearing

Meng

Zhang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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An investigation of the compound texture effect on the dynamic characteristics of the journal bearing film is conducted. In this work, eight dynamic coefficients of the compound textured journal bearing and critical speed of the rotor supported by textured bearings are obtained and compared. Meanwhile, the elastic deformation effect of the bearing and rotor is obtained using the continuous convolution fast Fourier transform (CC-FFT) method. It is found that the reasonably arranged compound texture brings out an obvious increment in the direct stiffness coefficients and damping coefficients compared with the simple one, which results in the high critical speed of the bearing-rotor system. The above changes are close to the texture distribution, second-layered texture length, and width-length ratios of the compound texture. Moreover, there exists a critical compound texture depth to improve the critical speed of the bearing-rotor system.

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Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of compound textured journal bearing

Meng

Zhang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…In a combination of higher load and rolling speed, the surface textured contacts yielded significant reduction in rolling friction and vibration amplitude at resonant frequencies in comparison with the smooth contacts. The study of Meng et al [31] showed that appropriately decreasing the eccentricity ratio or rotational speed can reduce the noise of the compound textured bearing. In addition, there is a critical length/diameter ratio of the bearing for suppressing the noise of the compound textured bearing.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Surface Texturing and Lubrication on the Vibrational and Tribological Performance of Sliding Contact

et al. 2022

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Various textures are fabricated by a picosecond laser machine on the surfaces of circular stainless steel specimens. Vibrational and tribological effects of laser surface textures are investigated by means of a tribometer and a data acquisition and signal processing (DASP) system. Experimental results show that surface textures can reduce the coefficients of friction (COFs), enhance the wear resistance, and improve the dynamical performance of frictional surfaces. In this study, the surface with micro circular dimples in diameter of 150 μm or textured area density of 25% has the best tribological and dynamical performance. Compared with the non-textured surface, the surface with circular dimples in diameter of 150 μm and 15% textured area density has 27% reduction of COFs, 95% reduction of frictional vibrations, and 66% reduction of frictional noise. The frictional vibrations and noise in the sliding contacts can be effectively reduced by adding graphene to the lubrication oil, and the surface textures enhance the frictional noise reduction performance of lubrication.

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