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1A review of recent advances in tribology显示文摘The reach of tribology has expanded in diverse fields and tribology related research activities have seen immense growth during the last decade.This review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 years.Different aspects of tribology that have been reviewed including lubrication,wear and surface engineering,biotribology,high tem perature tribology,and computational tribology.This review attempts to highlight recent research and also presents future outlook pertaining to these aspects.It may however be noted that there are limitations of this review.One of the most important of these is that tribology being a highly multidisciplinary field,the research results are widely spread across various disciplines and there can be omissions because of this.Secondly,the topics dealt with in the field of tribology include only some of the salient topics(such as lubrication,wear,surface engineering,biotribology,high tem perature tribology,and computational tribology)but there are many more aspects of tribology that have not been covered in this review.Despite these limitations it is hoped that such a review will bring the most recent salient research in focus and will be beneficial for the growing community of tribology researchers.Yonggang MENG Jun XU Zhongmin JIN Braham PRAKASH Yuanzhong HU 2020Friction2020,8,2:31
2Wear law in mixed lubrication based on stress-promoted thermal activation显示文摘Although several empirical wear formulas have been proposed,theoretical approaches for predicting surface topography evolution during sliding wear are limited.In this study,we propose a novel wear-prediction method,wherein the energy-based Arrhenius equation is combined with a mixed elastohydrodynamic lubrication(EHL)model to predict the point-contact wear process in mixed lubrication.The surface flash temperature and contact pressure are considered in the wear model.Simulation results are compared with the experimental results to verify the theory.The surface topography evolutions are observed during the wear process.The influences of load and speed on wear are investigated.The simulation results based on the Arrhenius equation relationship shows good agreement with the results of experiments as well as the Archard wear formula.However,the Arrhenius equation is more accurate than the Archard wear theory in some aspects,such as under high-temperature conditions.The results indicate that combining the wear formulas with the mixed EHL simulation models is an effective method to study the wear behavior over time.Xin PEI Wei PU Jialong YANG Ying ZHANG 2021Friction2021,9,4:2
3An advanced efficient model for adhesive wear in elastic-plastic spherical contact显示文摘A finite element(FE)model combining submodel technique is presented for the adhesive wear in elastic–plastic spherical contact.It consists of a global model,showing the potential location of fracture under combined normal and tangential loading,and a refined mesh submodel covering only the region near the potential fracture.This allows to describe the morphology of wear particle more accurately than that in a previously developed model by the authors.A range of normal loading is studied to show its effect on the shape and volume of wear particles.Two main regimes of mild and severe wear(along with a relatively narrow transition region between them)are found,which show almost linear and power-law dependency of wear rate on normal loading,respectively.Such behavior agrees with published experimental observations.However,the transition region is theoretically predicted here for the first time.Haibo ZHANG Izhak ETSION 2022Friction2022,10,8:1
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