Friction最新文献_第2页

Film forming and lubrication mechanisms of whey proteins and mucin 乳清蛋白和粘蛋白的成膜和润滑机制

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-19 DOI: 10.26599/frict.2025.9441038

Yating Huang, Yongbao Wei, Yan Wang, Zhihua Pang

{"title":"Film forming and lubrication mechanisms of whey proteins and mucin","authors":"Yating Huang, Yongbao Wei, Yan Wang, Zhihua Pang","doi":"10.26599/frict.2025.9441038","DOIUrl":"https://doi.org/10.26599/frict.2025.9441038","url":null,"abstract":" The sensory perception of whey protein is closely related to its ability to form films on the oral surface and the structure of the resulting film. Mucins, key components of human saliva, play a significant role in this film-forming process and in oral lubrication. Direct exploration of their film-forming behavior in the oral environment is crucial for understanding the mechanisms of mouthfeel. Subsequent adsorption experiments revealed that whey protein isolate (WPI) and mucin molecules could form hydrated layers immediately on gold or polydimethylsiloxane (PDMS) surfaces. Moreover, mucin exhibited a stronger adsorption capacity, displacing WPI molecules adsorbed on the surfaces. Conversely, preformed mucin layers facilitated the formation of a mucin-WPI hybrid layer. The film thickness and quantity of adsorbed mass increased over time, following the pseudo-second-order (PSO) model, indicating strong chemical bonding between the molecules and the substrate surface. The lubrication properties of the hybrid layer were confirmed via an optical interference approach. Under Hertzian contact at a speed of 500 mm/s and a load of 10 N, a thin film lubrication (TFL) state was observed, with the highest film thickness reaching approximately 30 nm. In contrast, under compliant contact with a 10 mN load, the lubrication state transitioned from TFL to soft-EHL at an entrainment speed of just 2.5 mm/s, with the film thickness reaching nearly 350 nm. The presence of mucin enhanced the consistency of WPI adsorption, leading to a thicker and more reliable film. Further investigation revealed that the addition of mucin reduced friction by 30%–50% in both the boundary and TFL regimes. The superior lubrication performance of the mucin/WPI emulsion was attributed to the formation of the hybrid layer and the mucoadhesive properties of mucin. This study provides guidance for the use of mucin to increase the smoothness of WPIs and alleviate their mouth-drying effects. ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"19 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144334963","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

Molecular adsorbate effects on graphite–silica superlubricity: A ReaxFF investigation 分子吸附物对石墨-二氧化硅超润滑性的影响：ReaxFF研究

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-16 DOI: 10.26599/frict.2025.9441055

Marcus C. Perovich, Luis E. Paniagua-Guerra, Qian Mao, Seong H. Kim, Adri C. T. van Duin, Bladimir Ramos-Alvarado

{"title":"Molecular adsorbate effects on graphite–silica superlubricity: A ReaxFF investigation","authors":"Marcus C. Perovich, Luis E. Paniagua-Guerra, Qian Mao, Seong H. Kim, Adri C. T. van Duin, Bladimir Ramos-Alvarado","doi":"10.26599/frict.2025.9441055","DOIUrl":"https://doi.org/10.26599/frict.2025.9441055","url":null,"abstract":" Graphite has achieved widespread recognition as an effective solid lubricant due to its high functionality across diverse environmental conditions. Although superlubricity or ultra-low friction is readily observed at the graphite basal plane, it has been reported that certain adsorbates from the surrounding environment can deteriorate this friction regime. Here, we conducted a fundamental analysis on the effect of phenol, pentanol, and water adsorbates on the friction of graphite–silica interfaces using molecular dynamics simulations with the reactive force field ReaxFF. First, we evaluated three ReaxFF parameter sets optimized using friction-pertinent properties. It was observed that the force field optimization objective played a major role in the calculated tribological properties. Secondly, parameters such as normal load and motion directionality were investigated. Additionally, adsorption, and binding energy calculations were performed to expand upon the hypothesis that friction may be directly correlated to the interfacial molecular structure rather than binding energy and adsorbate commensuration with graphene. By quantitatively representing the interfacial roughness of each adsorbate, the hypothesis was confirmed by unequivocally explaining the calculated friction coefficients. ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"3 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144296305","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

Research on the friction regulation of biomimetic multi-layer setal arrays under cooperative deformation effects 协同变形作用下仿生多层嵌套阵列摩擦调节研究

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-16 DOI: 10.26599/frict.2025.9441134

Qian Cheng, Fan Yang, Zhuyu Zhou, Chengkai Jiang, Zhijiang Chen, Feodor M. Borodich, Xiaoqing Jin, Han Jiang

{"title":"Research on the friction regulation of biomimetic multi-layer setal arrays under cooperative deformation effects","authors":"Qian Cheng, Fan Yang, Zhuyu Zhou, Chengkai Jiang, Zhijiang Chen, Feodor M. Borodich, Xiaoqing Jin, Han Jiang","doi":"10.26599/frict.2025.9441134","DOIUrl":"https://doi.org/10.26599/frict.2025.9441134","url":null,"abstract":"Biological setal arrays exhibit a complex multi-layer arrangement, allowing for friction behavior regulation through the cooperative deformation of the setae. To reveal the friction regulation mechanism of multi-layer setal arrays under cooperative deformation, this study established friction analytical models and validated the theoretical results through biomimetic experiments. Firstly, for sliding on smooth surface, it was found that under applied displacement, the continuous large deflection deformation of multi-length setae results in faster friction-reduction and better multi-stage load-bearing capacity. Then, for sliding on rough surface, the cooperative deformation of multi-length setae arranged in different directions can reduce fluctuations in the array’s friction and support force curves after force superposition. Multi-layer setal arrays demonstrate superior friction regulation compared to single-layer arrays. By adjusting the seta length ratio, number of layers, and distance, both friction and load-bearing performance can be further optimized. This study offers insights for designing biomimetic surfaces with controllable friction.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"13 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144296304","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

On the multi-scale nature of ski–snow friction in cold conditions 低温条件下滑雪摩擦的多尺度特性研究

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-13 DOI: 10.26599/frict.2025.9441069

Kalle Kalliorinne, Gustav Hindér, Joakim Sandberg, Hans-Christer Holmberg, Roland Larsson, Andreas Almqvist

{"title":"On the multi-scale nature of ski–snow friction in cold conditions","authors":"Kalle Kalliorinne, Gustav Hindér, Joakim Sandberg, Hans-Christer Holmberg, Roland Larsson, Andreas Almqvist","doi":"10.26599/frict.2025.9441069","DOIUrl":"https://doi.org/10.26599/frict.2025.9441069","url":null,"abstract":" In the Olympic winter sports cross-country skiing and the biathlon, athletes aim to minimise resistive forces such as aerodynamic drag, gravity, and ski–snow friction to enhance performance. Ski–snow friction is complex, involving multiple friction mechanisms that vary depending on snow conditions. In cold environments, where the moisture and water content are minimal, friction is presumably influenced primarily by dry interactions between the ski and snow, particularly through adhesion and abrasion at the micro-scale. Here, we examined ski–snow friction under cold conditions using eight pairs of cross-country skis, with different apparent contact lengths and real contact areas. Our findings revealed that apparent contact length, a macro-scale parameter, had the greatest impact on friction, followed by total real contact area, which is a multi-scale parameter. For snow temperatures below approximately −10 °C, longer apparent contact lengths reduced friction, whereas shorter lengths are more effective above −10 °C. In addition, at −3 °C, minimising the total real contact area was advantageous for reducing friction, while this effect diminished at −8.5 °C. At the coldest tested temperature of −13 °C, a larger total real contact area resulted in the lowest friction. These findings highlight the importance of considering both macro- and micro-scale contact properties for optimising ski performance in different cold conditions. ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"19 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278756","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

Physical models of sliding friction: A review 滑动摩擦的物理模型：综述

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-12 DOI: 10.26599/frict.2025.9441132

Qiuchen Lv, Wenhao He, Zhibin Lu

引用次数: 0

Droplet/bubble manipulation on a biomimetic material with low-friction 低摩擦仿生材料的微滴/气泡操作

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-12 DOI: 10.26599/frict.2025.9441133

Jing Wang, Yuanmeng Zhou, Zhiguang Guo

{"title":"Droplet/bubble manipulation on a biomimetic material with low-friction","authors":"Jing Wang, Yuanmeng Zhou, Zhiguang Guo","doi":"10.26599/frict.2025.9441133","DOIUrl":"https://doi.org/10.26599/frict.2025.9441133","url":null,"abstract":"Controllable transport of fluids as well as bubbles is the cornerstone of various bioprocesses and microporous technology applications, with a wide range of applications in microfluidics, bioassays, gas transport, and oil-water separation technologies. Although functional modulation of solid surfaces to achieve different surface responses for directional manipulation of microfluidics has been extensively investigated, non-contact bubble/droplet directional manipulation remains a challenge in this field. Here, we report a simple candle soot deposition method to achieve the construction of oil-filled surface nano-roughness, and then achieve the combination of oil-locking performance and photo-thermal response performance on the PDMS surface, and produce a near-infrared light (NIL) response soot nano skeleton oil-filled surfaces (NSNOS), which can be effectively applied to the directional manipulation of droplets and bubbles. Soot nanoparticles act as a backbone to support the SiO2 shell to provide structural stability, while Fe3O4 nanoparticles combine to provide the surface with excellent NIL photothermal response properties. It can be heated up to more than 150 ℃ within 60 S. Precise droplet/bubble orientation manipulation is thus achieved. And through the localized thermal response to near-infrared light, we can realize the control of droplets and bubbles for anti-gravity and anti-buoyancy motions with precise and controllable trajectories. And we believe that this work provides important insights for the development of the smart field of droplet/bubble micro-manipulation and smart field development.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"6 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269114","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

Sliding dynamics induced by periodic frictional driving 周期性摩擦驱动诱导的滑动动力学

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-12 DOI: 10.26599/frict.2025.9441131

Martin Maza-Cuello, Diego Maza

{"title":"Sliding dynamics induced by periodic frictional driving","authors":"Martin Maza-Cuello, Diego Maza","doi":"10.26599/frict.2025.9441131","DOIUrl":"https://doi.org/10.26599/frict.2025.9441131","url":null,"abstract":"We investigate the frictional dynamics experienced by a free mass placed on a harmonically oscillating surface. Unlike traditional setups used to study frictional instabilities such as stick‒slip oscillations, where a mass attached to a wall by a spring is pulled by a conveyor belt, our experimental configuration represents a genuine single-degree-of-freedom system. Hence, the resulting dynamical states are determined solely by the interactions between the surfaces, without the influence of any external parameters. The dynamic response of the mass provides valuable insights for characterizing both the static and dynamic friction coefficients, as well as their roles in the limit cycle when the mass moves relative to the base. We demonstrate the versatility of our setup by examining various materials and investigating surfaces with different textures, including both smooth and rough surfaces, which lead to distinct dynamic states. We compare the experimental results with those of a minimal model designed for frictional systems, confirming the effectiveness of our setup in studying the transition between stick and slip regimes. Additionally, we analyze a basic numerical description to validate the applicability of our method in fixing the numerical model parameters.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"10 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269145","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 a friction model for the numerical simulation of clinching processes 夹具过程数值模拟摩擦模型的建立

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-09 DOI: 10.26599/frict.2025.9441052

Max Böhnke, Christian R. Bielak, Robert Beck, Mathias Bobbert, Gerson Meschut

{"title":"Development of a friction model for the numerical simulation of clinching processes","authors":"Max Böhnke, Christian R. Bielak, Robert Beck, Mathias Bobbert, Gerson Meschut","doi":"10.26599/frict.2025.9441052","DOIUrl":"https://doi.org/10.26599/frict.2025.9441052","url":null,"abstract":" In numerical simulations of mechanical joining processes, such as clinching, modeling of material behavior is of decisive importance. In addition to the correct representation of plasticity and damage mechanisms, this primarily includes modeling of the friction behavior between the parts to be joined. This paper presents a method for experimental characterization and numerical modelling of friction behavior in mechanical joining processes like clinching. An axial torsion test was used to generate surface conditions on technological specimens, which also occur in the joined parts during the clinching process. This method also enables the independent investigation of friction-relevant parameters, such as relative velocity and contact pressure. The experimental datasets using aluminum material were transferred into an analytical approach. Combined with a modifiable user subroutine, it has been implemented into the finite element (FE) modeling using LS-Dyna. Validation was performed by numerically modeling the axial torsion test and comparing experimental and numerical results. Finally, the clinching process is simulated with the developed friction model and a standard friction model, and the results are compared. ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"13 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252706","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

Footwear soles friction on steel and tile surfaces: Experiments and modeling 鞋底摩擦钢和瓷砖表面：实验和建模

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-06 DOI: 10.26599/frict.2025.9441044

Lasse Jakobsen, Avinash Tiwari, Ion Marius Sivebaek, Bo Persson

引用次数: 0

Wear-resistant and anticorrosion mechanism for transmission friction pairs in marine environment 海洋环境中传动摩擦副的耐磨防腐机构

IF 6.8 1区工程技术

Friction Pub Date : 2025-06-06 DOI: 10.26599/frict.2025.9441037

Ke Ning, Qi Wang, Jianmei Wang, Wengang Ning

{"title":"Wear-resistant and anticorrosion mechanism for transmission friction pairs in marine environment","authors":"Ke Ning, Qi Wang, Jianmei Wang, Wengang Ning","doi":"10.26599/frict.2025.9441037","DOIUrl":"https://doi.org/10.26599/frict.2025.9441037","url":null,"abstract":" Friction pair coatings are highly susceptible to failure in corrosive marine environments. To enhance their service performance, this study focuses on the friction pairs in the main shaft transmission of offshore wind turbines and investigates the wear and corrosion resistance of different surface treatment processes. A wear theory model is developed on the basis of dynamic changes in the contact area to predict wear under dry friction and corrosive conditions. The results indicate that the Interzinc B coating results in the best overall performance in terms of friction, wear, and corrosion resistance. Rough and high-hardness surfaces increase the friction coefficient, whereas Zn powder and ZnO adhesive not only produce less abrasive debris but also form a micro/nanoparticle self-lubricating mechanism, reducing surface wear. Compared with the traditional zinc spraying process, the friction coefficient can be increased by 28.4%, whereas the wear amount can be reduced by 76.2%. The release of Zn2+ and the oxidation reaction mechanism enhanced the self-healing ability of the passive film, improving its anticorrosion ability. The maximum error between the finite element analysis of coating wear and the test results is only 6.26%, which verifies the accuracy of the wear theory model and provides guidance for the precise design of wind turbine transmission friction pairs. ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"10 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144236807","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