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<p>The development of large-scale wind turbines places higher requirements on the tribological performance of sliding bearings, which often face friction and wear problems such as oil film rupture and oil starvation in extreme environments like Gobi deserts and wastelands. Surface Microtextures (SM) technology is an effective way to improve this issue. This paper systematically reviews the research on the influence of SM characteristic parameters on the tribological performance of sliding bearings; these parameters specifically include surface size and depth size in terms of geometric dimensions, conventional, new-type and bionic shapes in terms of shape, and arrangement, position, density and composite characteristics in terms of distribution features. This paper summarises the influence laws of characteristic parameters on the tribological performance of sliding bearings under variable rotational speed conditions, wide temperature range environments and lubricant starvation working conditions. The improvement of the tribological performance of textured surfaces is attributed to the multi-objective collaborative optimisation of such characteristic parameters as geometric dimensions and shapes, in conjunction with specific service conditions. Specifically, depth dimensions and conventional shapes are the primary influencing parameters under variable rotational speed conditions; novel shapes and position characteristics serve as the dominant factors in wide temperature range environments; conventional shapes or density characteristics play the key role under lubricant starvation conditions. The main mechanisms through which SM characteristic parameters enhance tribological performance under complex working conditions are the hydrodynamic pressure effect, lubricant storage and release, and wear debris trapping and removal. To summarise the above, SM subjected to multi-objective optimisation design can effectively improve the service performance and service life of sliding bearings under complex working conditions, providing a theoretical reference for the research on improving the tribological performance of textured wind turbine sliding bearings suitable for extreme wind conditions.</p>

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Study on the lnfluence of Surface Microtextures on the Tribological Properties of Sliding Bearings Under Complex Operating Conditions

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Hanxin Zhou,
  • Quanwei Cui,
  • An Wu,
  • Jianxing Zhou

摘要

The development of large-scale wind turbines places higher requirements on the tribological performance of sliding bearings, which often face friction and wear problems such as oil film rupture and oil starvation in extreme environments like Gobi deserts and wastelands. Surface Microtextures (SM) technology is an effective way to improve this issue. This paper systematically reviews the research on the influence of SM characteristic parameters on the tribological performance of sliding bearings; these parameters specifically include surface size and depth size in terms of geometric dimensions, conventional, new-type and bionic shapes in terms of shape, and arrangement, position, density and composite characteristics in terms of distribution features. This paper summarises the influence laws of characteristic parameters on the tribological performance of sliding bearings under variable rotational speed conditions, wide temperature range environments and lubricant starvation working conditions. The improvement of the tribological performance of textured surfaces is attributed to the multi-objective collaborative optimisation of such characteristic parameters as geometric dimensions and shapes, in conjunction with specific service conditions. Specifically, depth dimensions and conventional shapes are the primary influencing parameters under variable rotational speed conditions; novel shapes and position characteristics serve as the dominant factors in wide temperature range environments; conventional shapes or density characteristics play the key role under lubricant starvation conditions. The main mechanisms through which SM characteristic parameters enhance tribological performance under complex working conditions are the hydrodynamic pressure effect, lubricant storage and release, and wear debris trapping and removal. To summarise the above, SM subjected to multi-objective optimisation design can effectively improve the service performance and service life of sliding bearings under complex working conditions, providing a theoretical reference for the research on improving the tribological performance of textured wind turbine sliding bearings suitable for extreme wind conditions.