Tribology International最新文献

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Nanostructured oxide composites in PEO coating of β Ti alloys with low elastic modulus for biomedical applications 生物医学用低弹性模量β钛合金PEO涂层纳米结构氧化物复合材料
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-05 DOI: 10.1016/j.triboint.2025.110677
Mariana C. Rossi , Pedro A.B. Kuroda , Angel Vicente Escuder , Vicente Amigó , Conrado R.M. Afonso
{"title":"Nanostructured oxide composites in PEO coating of β Ti alloys with low elastic modulus for biomedical applications","authors":"Mariana C. Rossi ,&nbsp;Pedro A.B. Kuroda ,&nbsp;Angel Vicente Escuder ,&nbsp;Vicente Amigó ,&nbsp;Conrado R.M. Afonso","doi":"10.1016/j.triboint.2025.110677","DOIUrl":"10.1016/j.triboint.2025.110677","url":null,"abstract":"<div><div>In this work, tribocorrosion of Ti-15Nb, Ti-40Nb, and Ti-33Nb-33Zr biomedical alloys in artificially simulated body fluid is studied by a tribocorrosion technique that allows measuring resistance to corrosion and wear at the same time for alloys coated by PEO technique using a bioactive solution for incorporation calcium, phosphorus, and magnesium that promote the formation of a passive ceramic layer with porosity made by TiO<sub>2.</sub> The kinetics parameters were calculated by the taffel curves extrapolation, the coefficient of friction during the process and the morphology and type of wear before, and after PEO coating on the alloys. XRD, SEM, and TEM evaluated a previous structural and microstructural study of the ceramic layer. Tribocorrosion tests were performed using a reciprocating pin-on-disk tribometer under constant load, and a counterpart, Al<sub>2</sub>O<sub>3</sub>, were used against the alloys in contact pressure on the tribocorrosion mechanisms. Among the β Ti-Nb-(Zr) alloys, an improved wear and corrosion resistance with lower damage was remarked for TN15, TN40, and TNZ33 alloys, with better results for TN40 (r<sub>p</sub>=9.8 µm/year), followed by TN15(r<sub>p</sub>=15.1 µm/year) and TNZ33(r<sub>p</sub>=15.5 µm/year) PEO coated samples. The improvement of tribocorrosion resistance can be attributed to the presence of zirconium oxide (ZrO<sub>2</sub>) and rutile (TiO<sub>2</sub>), the thickness (TN40: 1.3 µm; TNZ33:5.2 µm; TN15: 6.7 µm) and pore size (TN40: 2.64 µm; TNZ33: 3.68 µm; TN15: 3.09 µm) of the PEO ceramic layer.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110677"},"PeriodicalIF":6.1,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultra-low friction, ultra-fast response and low-VOC self-lubricating coating based on oil-filled silica microcapsules 基于充油二氧化硅微胶囊的超低摩擦、超快速响应、低voc自润滑涂层
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-05 DOI: 10.1016/j.triboint.2025.110701
Yanliang Shen , Yanhua Wang , Chen Zhao , Xingwei Wang , Qiangliang Yu , Meirong Cai , Bo Yu , Feng Zhou
{"title":"Ultra-low friction, ultra-fast response and low-VOC self-lubricating coating based on oil-filled silica microcapsules","authors":"Yanliang Shen ,&nbsp;Yanhua Wang ,&nbsp;Chen Zhao ,&nbsp;Xingwei Wang ,&nbsp;Qiangliang Yu ,&nbsp;Meirong Cai ,&nbsp;Bo Yu ,&nbsp;Feng Zhou","doi":"10.1016/j.triboint.2025.110701","DOIUrl":"10.1016/j.triboint.2025.110701","url":null,"abstract":"<div><div>A complete silica microcapsule filled with PAO6 oil was synthesized by emulsion-templated sol-gel method. The average diameter of microcapsule was about 20 µm, with encapsulation capacity of 70 %. The microcapsules were well-dispersed in aqueous solution and fully compatible with waterborne epoxy emulsion, making it suitable for building VOC-free self-lubricating coatings. With 5 wt% microcapsule, the self-lubricating coating achieved an exceptionally low friction coefficient at about 0.02, approximately 2.6 % of that of the blank coating without microcapsules. The wear volume could barely be measured. The ultra-fast response ability was robust, as confirmed by the negligible running time throughout the continuous start-stop sliding tests. This oil-filled silica microcapsule has great potential for developing high performance and VOC-free self-lubricating coatings.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110701"},"PeriodicalIF":6.1,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of self-renewing soft-hard composite coating for stable hydration lubrication with high load capacity and extended durability 自更新软-硬复合涂层的研制,用于稳定的水化润滑,具有高承载能力和延长耐久性
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-03 DOI: 10.1016/j.triboint.2025.110678
Meijun Feng , Mouji Li , Zhuanli Zhang , Ketian Gao , Xueyan Gong , Wufang Yang , Yanhua Liu , Jianbin Zhang , Zhengfeng Ma , Wenwen Zhao
{"title":"Development of self-renewing soft-hard composite coating for stable hydration lubrication with high load capacity and extended durability","authors":"Meijun Feng ,&nbsp;Mouji Li ,&nbsp;Zhuanli Zhang ,&nbsp;Ketian Gao ,&nbsp;Xueyan Gong ,&nbsp;Wufang Yang ,&nbsp;Yanhua Liu ,&nbsp;Jianbin Zhang ,&nbsp;Zhengfeng Ma ,&nbsp;Wenwen Zhao","doi":"10.1016/j.triboint.2025.110678","DOIUrl":"10.1016/j.triboint.2025.110678","url":null,"abstract":"<div><div>Hydration lubrication has attracted significant research interest due to its environmentally friendly characteristics, low coefficient of friction (COF), and clean, green nature. While, achieving a stable, low-friction water lubrication system with high load-bearing capacity and long service life remains a key challenge. Leveraging the hydrolytic properties of triisopropylsilyl acrylate (TIPSA), a self-renewing, low-friction hydration lubrication interface using a soft-hard composite friction (SHCF) coating strategy was developed. Their comprehensive physicochemical and mechanical properties were analyzed through FT-IR, XPS, FE-SEM, CA, tensile testing, and depth-sensing indentation (DSI) techniques. Notably, by controlling interfacial degradation, the SHCF coating achieved a stable hydration layer that enhanced lubrication and an undegraded bottom layer that provided robust load-bearing support. Testing with a ball-on-disk reciprocating friction prototype demonstrated a COF as low as 0.02 under 30 N (1.59 MPa) load. Furthermore, due to its self-renewing micro-scale interface, the coating maintained excellent durability, preserving its low-friction properties for up to 10 hours (36000 cycles). This study presents an effective approach to constructing stable, water-lubricated coatings with low friction, high load capacity, and extended service life.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110678"},"PeriodicalIF":6.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microstructure and wear resistance of in situ synthesized Mo-Si-B coatings through laser cladding 激光熔覆原位合成Mo-Si-B涂层的显微组织和耐磨性
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-03 DOI: 10.1016/j.triboint.2025.110700
Taikang Shi , Yao Li , Kuo Zhang , Mengyang Li , Yefei Geng , Xin Zhou , Ting Guo , Yajie Guo , Xiaofeng Dang
{"title":"Microstructure and wear resistance of in situ synthesized Mo-Si-B coatings through laser cladding","authors":"Taikang Shi ,&nbsp;Yao Li ,&nbsp;Kuo Zhang ,&nbsp;Mengyang Li ,&nbsp;Yefei Geng ,&nbsp;Xin Zhou ,&nbsp;Ting Guo ,&nbsp;Yajie Guo ,&nbsp;Xiaofeng Dang","doi":"10.1016/j.triboint.2025.110700","DOIUrl":"10.1016/j.triboint.2025.110700","url":null,"abstract":"<div><div>In this study, Mo-Si-B alloy coatings were in situ laser cladded on pure Mo substrate using cost-effective blended Mo, Si, and B<sub>4</sub>C powders. Mo-Si-B coatings with minimized solidification defects exhibit a dendritic morphology that consists of coarse α-Mo dendrite cores and fine-grained interdendritic Mo<sub>3</sub>Si-Mo<sub>5</sub>SiB<sub>2</sub> eutectics, with a small amount of carbides. Compared to the pure Mo substrate, the Mo-Si-B coatings exhibit higher microhardness due to the nanohardness of interdendritic eutectics ~2.4 times greater than the α-Mo phase and showcase superior wear resistance, reducing the coefficient of friction by 72.4% and the wear rate by 39.8%. The enhanced wear resistance of Mo-Si-B coatings is attributed to the presence of hard intermetallic compounds and the formation of a self-lubricating oxidation film.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110700"},"PeriodicalIF":6.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fretting degradation in large flat-on-flat contact under oil lubrication: Effect of displacement amplitude 油润滑下大平面接触的微动退化:位移幅值的影响
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-02 DOI: 10.1016/j.triboint.2025.110685
A. Zabihi , J. Juoksukangas , J. Hintikka , T. Salminen , A. Mäntylä , J. Vaara , T. Frondelius , M. Vippola
{"title":"Fretting degradation in large flat-on-flat contact under oil lubrication: Effect of displacement amplitude","authors":"A. Zabihi ,&nbsp;J. Juoksukangas ,&nbsp;J. Hintikka ,&nbsp;T. Salminen ,&nbsp;A. Mäntylä ,&nbsp;J. Vaara ,&nbsp;T. Frondelius ,&nbsp;M. Vippola","doi":"10.1016/j.triboint.2025.110685","DOIUrl":"10.1016/j.triboint.2025.110685","url":null,"abstract":"<div><div>Fretting degradation of self-mated quenched and tempered steel was studied by varying loading conditions via imposed tangential displacement amplitude in oil-lubricated flat-on-flat contact. Detailed microscopic characterization showed the effects of tangential loading and the presence of oil at the interface on (sub)surface damage. A thin, cracked carbonaceous layer, arising from oil decomposition, was detected at adhesion spots in the mixed slip-stick regime. Furthermore, surface oxidation was noticed at the highest imposed displacement amplitude of 45 µm in gross slip, despite the presence of oil. Based on the crack analysis, a substantial increase in crack size was observed by transitioning from mixed slip-stick to gross slip.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110685"},"PeriodicalIF":6.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-situ molecular-level observation of lubricant species at tribological interface using surface-enhanced Raman spectroscopy 基于表面增强拉曼光谱的摩擦学界面润滑油分子水平的原位观察
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-02 DOI: 10.1016/j.triboint.2025.110695
Subaru Sawaki , Masahiro Yanagisawa , Masahiro Kunimoto , Takayuki Homma
{"title":"In-situ molecular-level observation of lubricant species at tribological interface using surface-enhanced Raman spectroscopy","authors":"Subaru Sawaki ,&nbsp;Masahiro Yanagisawa ,&nbsp;Masahiro Kunimoto ,&nbsp;Takayuki Homma","doi":"10.1016/j.triboint.2025.110695","DOIUrl":"10.1016/j.triboint.2025.110695","url":null,"abstract":"<div><div>This study directly monitored molecular structures of lubricant species during sliding using in-situ surface-enhanced Raman spectroscopy (SERS) with plasmonic sensors developed by our research group. This method, characterized by exceptional sensitivity to interfacial chemical structures and high temporal resolution (1 s), facilitated tracking changes in lubricant species. Results for pure dodecane, used as the base oil for the lubricant, revealed immediate degradation upon sliding, forming amorphous carbon with benzene rings. This methodology provides the first observation of carbon degradation with high temporal resolution. In contrast, for the lubricant containing lauric acid, a surface-active additive at the iron interface, lauric acid primarily coordinated to the iron substrate, in bidentate coordination as iron laurate before sliding, with this structure persisting during sliding. This indicates that the carboxylate ions (COO<sup>−</sup>) function as a lubricating film by maintaining coordination with the iron substrate. In addition, continuously measured SERS spectra exhibited dynamic changes in the region corresponding to COO<sup>−</sup>, indicating that the degree of molecular interaction between carboxylate ions changes over time, with the bidentate coordination of COO<sup>−</sup> remaining predominant. This finding contributes to optimizing the formulation of lubricant blends with multiple additives. In conclusion, this study provided direct observation of chemical structures during sliding, which were previously only inferred owing to observational challenges. This work is expected to significantly enhance the molecular-level understanding of various base oils and additives under frictional conditions, facilitating the molecular design and formulation of more effective lubricants.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110695"},"PeriodicalIF":6.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tribological interface investigation of hand scraping based on two-level three-body contact model 基于两级三体接触模型的手部摩擦界面研究
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-02 DOI: 10.1016/j.triboint.2025.110696
Jeng-Haur Horng, Shin-Yuh Chern, Chia-Chun Yu, Yang-Yuan Chen, Teng-Han Wang, Jun-Hao Chen, Zheng-Yu Xiao, Yen-Hsin Liu, Yu-Huan Hsieh
{"title":"Tribological interface investigation of hand scraping based on two-level three-body contact model","authors":"Jeng-Haur Horng,&nbsp;Shin-Yuh Chern,&nbsp;Chia-Chun Yu,&nbsp;Yang-Yuan Chen,&nbsp;Teng-Han Wang,&nbsp;Jun-Hao Chen,&nbsp;Zheng-Yu Xiao,&nbsp;Yen-Hsin Liu,&nbsp;Yu-Huan Hsieh","doi":"10.1016/j.triboint.2025.110696","DOIUrl":"10.1016/j.triboint.2025.110696","url":null,"abstract":"<div><div>While scraping remains a closely guarded technique for optimizing machine tool performance, quantifiable criteria haven't existed. This study utilizes a self-made machine to operate on commercial scraping workpieces and employs the new two-level three-body tribology theory to analyze the interface properties. Based on the analysis of the solid contact load ratio, contact temperature and plasticity index of the scraping interface, it is verified that the interface operates within the Stribeck curve's minimum friction region and most of deformation contact area is plastic. The extremely low skewness (<em>S</em><sub><em>sk</em></sub>) and the POP values achieve efficient dual-stage lubricant delivery on scraped surface. Online monitoring of performance degradation in scraped surfaces can be achieved by utilizing a combination of POP, <em>S</em><sub><em>q</em></sub>, and <em>S</em><sub><em>sk</em></sub> parameters.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110696"},"PeriodicalIF":6.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving wear resistance of TA15 alloy by double reinforced network structure 双增强网状结构提高TA15合金的耐磨性
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-02 DOI: 10.1016/j.triboint.2025.110699
Yufeng Song , Lijie Wang , Zhen Wang , Wei Gao , Zichun Wu , Minbo Wang , Qiang Hu , Yang Liu , Xuefeng Ding
{"title":"Improving wear resistance of TA15 alloy by double reinforced network structure","authors":"Yufeng Song ,&nbsp;Lijie Wang ,&nbsp;Zhen Wang ,&nbsp;Wei Gao ,&nbsp;Zichun Wu ,&nbsp;Minbo Wang ,&nbsp;Qiang Hu ,&nbsp;Yang Liu ,&nbsp;Xuefeng Ding","doi":"10.1016/j.triboint.2025.110699","DOIUrl":"10.1016/j.triboint.2025.110699","url":null,"abstract":"<div><div>A novel interlocking dual-reinforced network structure was designed through laser metal deposition (LMD), enhancing the wear resistance of titanium alloys. The construction of the network structure facilitated grain refinement, increasing dislocation density and the proportion of low-angle grain boundaries. Moreover, due to the mismatch between in situ-formed TiB and the α-Ti matrix, TiB particles tended to detach during the wear process. These detached TiB particles contributed to lubrication and load-bearing in subsequent wear stages, shifting the wear mechanism from adhesive to abrasive wear. Consequently, compared with TA15 coatings, the in-situ generated biphasic network structure increased wear resistance by 65.2 %. This study provides a feasible strategy for designing advanced titanium alloy coatings with superior tribological performance.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110699"},"PeriodicalIF":6.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of plant-based compounds on the structural stability of mucous boundary layers in tribological contact 植物基化合物对摩擦学接触中黏液边界层结构稳定性的影响
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-01 DOI: 10.1016/j.triboint.2025.110688
Samuel S. Gamaniel , Erik G. de Vries , R. Hans Tromp , Els H.A. de Hoog , Rob Vreeker , David T.A. Matthews , Emile van der Heide
{"title":"Influence of plant-based compounds on the structural stability of mucous boundary layers in tribological contact","authors":"Samuel S. Gamaniel ,&nbsp;Erik G. de Vries ,&nbsp;R. Hans Tromp ,&nbsp;Els H.A. de Hoog ,&nbsp;Rob Vreeker ,&nbsp;David T.A. Matthews ,&nbsp;Emile van der Heide","doi":"10.1016/j.triboint.2025.110688","DOIUrl":"10.1016/j.triboint.2025.110688","url":null,"abstract":"<div><div>This study presents a new methodology for understanding the molecular interactions of plant-based compounds on lubricating boundary layers in oral contacts. The methodology was used to investigate the impact of a plant protein (fava bean protein isolate) and a phenolic compound (tannic acid) on the structure and lubricating property of mucous boundary layers. Tribological experiments, coupled with quartz crystal microbalance with dissipation monitoring measurements and fluorescence microscopy imaging, were used to elucidate the mechanism of boundary film disruption and lubrication losses. It was found that even at concentrations up to 5 % w/v, fava bean proteins bind to mucins and hydrophobic polydimethylsiloxane (PDMS) surfaces, forming a hydrated, hydrophilic layer that sustains lubrication. Conversely, even at concentrations lower than 0.5 % w/v, tannic acid interacts strongly with mucins via hydrophobic interactions and/or hydrogen bonding, leading to protein aggregation, interrupting mucin binding onto PDMS, and increasing friction due to the disruption of the lubricating boundary layer. Fluorescent microscopy images revealed that the tannic acid-bovine submaxillary mucin interaction impairs the stability of the mucous boundary film, facilitating mucous protein detachment during a single sliding experiment of a PDMS probe. Results from these investigations provide critical insights into the molecular-level mechanisms influencing oral lubrication, particularly for the development of polyphenol-rich foods, and emphasize the importance of tribological assessment as a research tool in the development of plant-based protein alternatives.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110688"},"PeriodicalIF":6.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Friction beyond the Amontons-Coulomb Law: A hidden pitfall in granular solids mechanics 超越阿蒙顿-库仑定律的摩擦:颗粒固体力学中的一个隐藏陷阱
IF 6.1 1区 工程技术
Tribology International Pub Date : 2025-04-01 DOI: 10.1016/j.triboint.2025.110684
Kaisen Zhang, Kun Liu, Tianyan Gao, Wei Wang, Xiaojun Liu, Jiaxin Ye
{"title":"Friction beyond the Amontons-Coulomb Law: A hidden pitfall in granular solids mechanics","authors":"Kaisen Zhang,&nbsp;Kun Liu,&nbsp;Tianyan Gao,&nbsp;Wei Wang,&nbsp;Xiaojun Liu,&nbsp;Jiaxin Ye","doi":"10.1016/j.triboint.2025.110684","DOIUrl":"10.1016/j.triboint.2025.110684","url":null,"abstract":"<div><div>The Mohr-Coulomb criteria, crucial in granular mechanics, outlines a boundary between granular contact's elastic and plastic behaviors. Our study reveals, through ball-on-V-groove experiments, that interfacial static friction defies the traditional Amontons-Coulomb law within the elastic regime. Results suggest the static friction coefficient between the ball and the groove is a complex function of the loading stiffness, contact stiffness and the groove’s opening angle. A newly proposed slip factor determines the magnitude and direction of the ball’s tangential supporting force exerted by the groove wall. These results have the potential to open up new gates for modeling and understanding various characteristics of granular matter like flowability, jamming, dilatancy and sandpile stability, even in the pure elastic setting.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110684"},"PeriodicalIF":6.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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