Abstract
Textured surfaces have been shown to provide enhanced tribological performance in a variety of contacts. Numerical analysis and optimisation methods are combined for application-oriented texture optimisation. However, an analytical approach is advantageous in providing more generic in-depth understanding of the nature of the relationships between texture parameters and objective functions, such as enhanced load carrying capacity and reduced friction. The paper outlines such an approach to obtain a set of global optimum design parameters for partially textured surfaces. The optimised results are expressed in dimensionless form, which enables their use for a variety of applications. The performance of optimised partially textured sliding surfaces is compared with the other conventional bearing geometries in their optimum state.
Highlights
Surface textures introduced on contacting surfaces act as microreservoirs of lubricant under operating conditions which do not otherwise yield a coherent film of lubricant
Owing to the diversity of load bearing conjunctions and operating conditions, there has been a plethora of reported research focused on particular applications such as journal bearings [8,9,10,11], thrust bearings [12,13], piston ring and cylinder liners [4,5,6,14,15], mechanical seals [1,2,16] and rolling element bearings [17,18] among other cases
Due to a relatively large number of texture design parameters and operational conditions, a unified set of guidelines for the optimisation process for any given application has not hitherto emerged despite several in-depth contributions [20,21,22,23]
Summary
Surface textures introduced on contacting surfaces act as microreservoirs of lubricant under operating conditions which do not otherwise yield a coherent film of lubricant. There has been an increasing volume of research on tribological performance of textured surfaces since the late 1990's [1,2] due to the advances made in their relatively cost-effective manufacture. The objectives were to maximise hydrodynamic load carrying capacity and minimise viscous friction or the required flow rate Their results provided a set of local optima, where for a given texture length ratio an optimum set of textured length and depth ratios could be specified for any given number of texture features. [25] to provide a global set of optimum parameters, which would maximise the attainable load carrying capacity It provides a comparison between the performance of textured surfaces with other commonly used slider geometries, all with their optimum design; wherever analytically feasible
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
