Tribology International最新文献

英文中文

Using lubricant composition to control friction-induced-vibration in an elastomer-steel contact representing a hydraulic seal 使用润滑剂成分控制代表液压密封件的弹性体-钢接触中的摩擦引起的振动

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-22 DOI: 10.1016/j.triboint.2024.110346

Sorin-Cristian Vladescu , Ralph Lumby , Andrew Gant , Helen Dyer , Tom Reddyhoff

Hydraulic seals are key industrial components that can suffer from unwanted friction induced vibration (FIV). The types of FIV mechanism that occur in these components, and how they may be controlled, are not well known. We conducted sliding friction tests on contacts between seal materials, lubricated by hydraulic fluids, under speeds and contact pressures typical of hydraulic machines. FIV that occurred under certain conditions was captured and analysed. Results suggest 1) two FIV mechanisms are occurring: classic stick-slip and speed dependant friction instability, the 2) occurrence and severity of these mechanisms are correlated with the ratio of static to dynamic friction and the gradient of the friction vs. speed (Stribeck) curve, respectively, 3) these parameters can be controlled by including an appropriate additive package in the lubricant and this significantly reduces FIV, 4) most FIV occurs at low temperature and high load since these both lead to low kinetic friction (due to thicker hydrodynamic films and smoother surfaces) and thus promote stick-slip. This may explain instances of noise known in practice as the “Monday-morning effect” and suggests how this too may be alleviated through lubricant formulation.

液压密封件是关键的工业部件，可能会受到不必要的摩擦诱导振动（FIV）的影响。人们对发生在这些元件中的 FIV 机制类型以及如何控制这些机制还不甚了解。我们在液压机的典型速度和接触压力下，对使用液压油润滑的密封材料之间的接触进行了滑动摩擦试验。我们捕捉并分析了在特定条件下发生的 FIV。结果表明：1）发生了两种 FIV 机制：典型的粘滑和速度相关摩擦不稳定性；2）这些机制的发生和严重程度与静摩擦力与动摩擦力的比率以及摩擦力与速度（Stribeck）曲线的梯度相关。3）这些参数可通过在润滑油中加入适当的复合添加剂来控制，从而显著降低摩擦不稳定性，4）大多数摩擦不稳定性发生在低温和高负荷下，因为这两种情况都会导致低动摩擦力（由于流体动力膜更厚和表面更光滑），从而促进粘滑。这可以解释在实践中被称为 "周一早晨效应 "的噪音现象，并说明如何通过润滑油配方来减轻这种现象。

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引用次数: 0

Methylcellulose-functionalized gallium-based liquid-metal nanoparticles as water-based lubricant additives 作为水基润滑油添加剂的甲基纤维素功能化镓基液态金属纳米粒子

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-22 DOI: 10.1016/j.triboint.2024.110336

Yafei Cui , Jie Guo , Jun Cheng , Yushan Geng , Hui Tan , Shengyu Zhu , Jun Yang

Ga-based liquid metal nanoparticles (GLM-NPs) are a novel high-performance additive for lubricants and this work novelty prepared a novel type of heterogeneous nanoparticles modified with a cost-effective and available methylcellulose (GLM-NPs/MC). It displays a clear core-shell structure with a particle size of about 270 nm, and as a water-based lubricant additive, it exhibits good tribology properties, reducing the friction coefficient and wear rate of the 304 steel discs by about 59 % and 40 % respectively. The high dispersion and good stability of GLM-NPs/MC make them slowly enter into the worn surface to form a Ga-rich tribo-film. In addition, the influence of GLM-NPs/MC content on the lubrication performance of the water was also studied and the optimization additive content is 0.6 wt%. This study provides insights into the design of nano-composite materials based on gallium-based liquid metal for lubrication applications.

镓基液态金属纳米粒子（GLM-NPs）是一种新型的高性能润滑油添加剂，这项工作新颖地制备了一种新型的异质纳米粒子，并用一种成本低廉且可用的甲基纤维素（GLM-NPs/MC）进行了改性。作为一种水基润滑油添加剂，它具有良好的摩擦学特性，可将 304 钢圆盘的摩擦系数和磨损率分别降低约 59% 和 40%。GLM-NPs/MC 的高分散性和良好稳定性使其缓慢进入磨损表面，形成富含 Ga 的三重膜。此外，还研究了 GLM-NPs/MC 含量对水润滑性能的影响，优化添加剂含量为 0.6 wt%。这项研究为设计用于润滑应用的基于镓基液态金属的纳米复合材料提供了启示。

引用次数: 0

High-accuracy ultrasonic measurement of oil film thickness in sliding bearings considering surface thin coating 考虑表面薄涂层因素的滑动轴承油膜厚度高精度超声波测量法

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-21 DOI: 10.1016/j.triboint.2024.110343

Peng Zheng , Shijie Wei , Pan Dou , Xinru Gao , Tonghai Wu , Min Yu , Yaguo Lei

Focusing on the difficulty and inaccuracy of separating reflected waves from overlapping echoes caused by coating when measuring the oil film thickness of coated sliding bearings using ultrasonic. This paper proposes a pseudo reflection coefficient (PRC) constructed using the overall reflected wave and reference wave. And a robust PRC model is constructed to simultaneously calculate the oil film and coating thickness. Acoustic simulations verify the accuracy of the method and reveal that the PRC model has better stability. Application experiments are conducted on an actual aviation fuel gear pump. The good consistency between theory and experiment has demonstrated the effectiveness of the method. In addition, the elastic deformation of the bearing is derived based on the minimum oil film thickness.

针对使用超声波测量涂层滑动轴承油膜厚度时，将反射波与涂层引起的重叠回波分离开来的困难和不准确性。本文提出了一种利用整体反射波和参考波构建的伪反射系数（PRC）。并构建了一个稳健的 PRC 模型，用于同时计算油膜和涂层厚度。声学模拟验证了该方法的准确性，并发现 PRC 模型具有更好的稳定性。在实际的航空燃油齿轮泵上进行了应用实验。理论与实验之间的良好一致性证明了该方法的有效性。此外，还根据最小油膜厚度得出了轴承的弹性变形。

引用次数: 0

Current-carrying low friction of hydrogenated amorphous carbon film 氢化无定形碳薄膜的载流低摩擦性能

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-21 DOI: 10.1016/j.triboint.2024.110340

Hao Yu, Zhixin Zhang, Yongwei Shi, Peidong Xue, Cheng Chen

Hydrogenated amorphous carbon (a-C:H) films, which equip excellent low friction performance but insulated, are naturally excluded from sliding electrical contact applications. In this work, we achieved current-carrying low friction of a-C:H film by utilizing a triboelectric triggered ignition effect. Protective resistors were introduced in the circuit during run-in for effectively alleviating undesired arc ablation. A T-shape crystalline structure of graphite was observed in the wear track by transmission electron microscopy. The parallel-aligned graphite at the top surface induced low friction, while the vertical-aligned graphite in the interior formed efficient electron transmission channels. This study expands the selection range of current-carrying friction films and provides a novel insight for the design and regulation of current-carrying friction films.

氢化无定形碳（a-C:H）薄膜具有出色的低摩擦性能，但却绝缘，因此自然被排除在滑动电接触应用之外。在这项工作中，我们利用三电触发点火效应实现了 a-C:H 薄膜的载流低摩擦。在试运行期间，我们在电路中引入了保护电阻，以有效缓解电弧烧蚀。透射电子显微镜观察到磨损轨迹中的石墨呈 T 形结晶结构。顶面平行排列的石墨产生了低摩擦，而内部垂直排列的石墨则形成了高效的电子传输通道。这项研究扩大了载流摩擦膜的选择范围，并为载流摩擦膜的设计和调节提供了新的见解。

引用次数: 0

The effect of deep-sea pressure during long-term aging on the tribological performance of fabric-reinforced phenolic composites 长期老化过程中的深海压力对织物增强酚醛复合材料摩擦学性能的影响

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-21 DOI: 10.1016/j.triboint.2024.110344

Yihao Fan , Jianzhang Wang , Hao Liu , Zhengtao Su , Gaolin Pei

The influence of hydrostatic pressures up to 30 MPa on the friction and wear behavior of fiber reinforced polymer composites (FRPCs) was investigated together with seawater absorption, interfacial structure and mechanical properties. The results revealed that after aging in the deep-sea environment, the wear rate of the FRPC increased from 1.53 × 10⁻⁶ mm³/N∙m to 3.61 × 10⁻⁶ mm³/N∙m, and the mechanical strength decreased reversibly. The damage mechanism was assumed to be dominated by the combined effect of crack propagation in the polymer matrix and interfacial debonding at high seawater pressures, characterized by a decreased resin modulus and increased interfacial thickness.

研究了高达 30 兆帕的静水压力对纤维增强聚合物复合材料（FRPC）摩擦和磨损行为的影响，以及海水吸收、界面结构和机械性能。结果表明，在深海环境中老化后，纤维增强聚合物复合材料的磨损率从 1.53 × 10-6 mm3/N∙m 增加到 3.61 × 10-6 mm3/N∙m，机械强度可逆下降。在高海水压力下，聚合物基体中的裂纹扩展和界面脱粘的共同作用被认为是主要的破坏机制，其特征是树脂模量降低和界面厚度增加。

引用次数: 0

Performance analysis of ER fluid-lubricated two-lobe hole-entry hybrid journal bearings with bionic and spherical texture surfaces optimized by genetic algorithm 采用遗传算法优化的具有仿生和球形纹理表面的 ER 流体润滑双叶孔入式混合轴颈轴承的性能分析

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-19 DOI: 10.1016/j.triboint.2024.110332

Chandra B. Khatri , Saurabh K. Yadav , Krishnkant Sahu , Satish C. Sharma

This study is done into the multifaceted world of ER (Electro-rheological) fluid-lubricated optimized textured hybrid hole-entry journal bearings to improve dynamic performance of the bearing and stability. These innovative techniques harness the dynamic properties of ER fluids in conjunction with optimized textured spherical and bionic textured surfaces to achieve enhanced performance and reliability. This study aims to explore the influence of ER fluid on the tribological behaviour and controllability of hybrid hole-entry journal bearings. Further it proposes the optimized design of bionic and spherical textured surfaces, capitalizing on their ability to influence fluid flow, load-carrying capacity, and friction reduction. The results demonstrate promising improvements in bearing performance metrics, including dynamic stability and fluid film damping, load-carrying capacity, friction reduction, and controllability, facilitated by the integration of ER fluid and the optimization of textured spherical and bionic textured surfaces. This study offers valuable insights into the potential applications of ER fluids and biomimicry-inspired textured surfaces in bearing system engineering. The inclusion of bionic textured hole-entry hybrid bearing lubricated with ER fluid improves the stability by up to 112.57 % and decrease the friction coefficient up to 23.37 %. The findings are expected to inform the design and development of high-performance hole-entry hybrid journal bearings with diverse industrial applications.

本研究涉及ER（电流变）流体润滑优化纹理混合孔入式轴颈轴承的多个方面，以提高轴承的动态性能和稳定性。这些创新技术利用ER流体的动态特性，结合优化的纹理球面和仿生纹理表面，以实现更高的性能和可靠性。本研究旨在探索ER流体对混合式孔入式轴颈轴承的摩擦学行为和可控性的影响。此外，它还提出了仿生和球形纹理表面的优化设计，充分利用其影响流体流动、承载能力和摩擦降低的能力。研究结果表明，通过整合 ER 流体以及优化纹理球面和仿生纹理表面，轴承性能指标有望得到改善，包括动态稳定性和流体膜阻尼、承载能力、摩擦减小和可控性。这项研究为ER流体和受仿生学启发的纹理表面在轴承系统工程中的潜在应用提供了宝贵的见解。使用ER流体润滑的仿生纹理孔入口混合轴承的稳定性提高了112.57%，摩擦系数降低了23.37%。这些发现有望为设计和开发具有多种工业应用的高性能孔入式混合轴颈轴承提供参考。

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引用次数: 0

Scratch geometry effects on lubrication and performance of two-lobe journal bearings: A detailed study 划痕几何形状对双叶轴颈轴承润滑和性能的影响：详细研究

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-19 DOI: 10.1016/j.triboint.2024.110334

Anh T. Vo , J. Bouyer , Phuoc Vinh Dang , M. Fillon

Scratches on bearing surfaces can significantly affect the performance and lifespan of journal bearings. This study investigates the impact of scratches on two-lobe journal bearings through both theoretical and numerical analyses. The theoretical approach provides insights into how scratches influence lubrication, while the numerical simulations investigate how the three key scratch parameters, namely width, position, and depth, affect bearing performance. Key metrics analyzed include pressure, velocity distributions, temperature profiles, eccentricity, attitude angle, minimum film thickness, and maximum temperature. The findings offer valuable guidance for optimizing bearing design, maintenance, and condition monitoring, contributing to enhanced reliability and operational efficiency.

轴承表面的划痕会严重影响轴颈轴承的性能和寿命。本研究通过理论和数值分析研究划痕对双叶轴颈轴承的影响。理论方法深入探讨了划痕如何影响润滑，而数值模拟则研究了三个关键划痕参数（即宽度、位置和深度）如何影响轴承性能。分析的关键指标包括压力、速度分布、温度曲线、偏心率、姿态角、最小薄膜厚度和最高温度。研究结果为优化轴承设计、维护和状态监测提供了宝贵的指导，有助于提高可靠性和运行效率。

引用次数: 0

Wear and corrosion resistance of textured and functionally particle-enhanced multilayer dual-biomimetic polymer coatings 纹理和功能粒子增强型多层双仿生聚合物涂层的耐磨性和耐腐蚀性

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-19 DOI: 10.1016/j.triboint.2024.110335

Jin Yan , Yujie Rong , Ying Zhang , Shaofeng Zhou , Jin Huang , Guizhe Zhao , Yaqing Liu

This study presents a dual-biomimetic polymer coating with improved wear and corrosion resistance, inspired by natural biological structures of shells and superhydrophobic surfaces. The coating is composed of alternating hard epoxy resin layers, modified with benzotriazole-functionalized silica for corrosion protection, and soft fluorocarbon resin layers, enhanced with graphene oxide for improved mechanical properties. Surface textures were added using a soft template method to boost hydrophobicity and reduce wear. The coating demonstrated excellent hardness, impact resistance, and corrosion protection, particularly in simulated seawater. Additionally, surface textures further minimized wear by trapping debris. This design strategy offers a promising approach for advanced polymer coatings in marine, machinery, and chemical applications, combining durability, protection, and self-healing properties.

本研究从贝壳和超疏水表面的天然生物结构中汲取灵感，提出了一种具有更好耐磨性和耐腐蚀性的双仿生聚合物涂层。该涂层由硬质环氧树脂层和软质氟碳树脂层交替组成，前者使用苯并三唑官能化二氧化硅进行改性，以提高防腐性能；后者使用氧化石墨烯进行增强，以提高机械性能。表面纹理采用软模板方法添加，以提高疏水性并减少磨损。涂层表现出优异的硬度、抗冲击性和防腐蚀性能，尤其是在模拟海水中。此外，表面纹理还通过截留碎屑进一步减少了磨损。这种设计策略为海洋、机械和化学应用领域的先进聚合物涂层提供了一种前景广阔的方法，它将耐用性、保护性和自修复特性融为一体。

引用次数: 0

The degeneration mechanism of lubricating oil in the ammonia fuel engine 氨燃料发动机中润滑油的变质机理

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-18 DOI: 10.1016/j.triboint.2024.110333

Xing Xu , Chang Ge , Baofeng Zhang , Xuan Ma , Rui Guo , Xiqun Lu

As a hydrogen-rich carbon-free fuel, ammonia has attracted great attention in the engine field. However, there are few studies on the lubricating oil of the ammonia engine, which hinders the development of the ammonia engine. To study the impact of ammonia on the physicochemical properties and the lubricating performances of the lubricating oil, water-lubricating oil, and lubricating oil-water-ammonia were prepared. By investigating dispersion stability, viscosity, thermal stability, and film-forming ability of different lubricating oils, the effect of ammonia on the physicochemical properties and lubricating properties of lubricating oil was analyzed. The effect mechanism of ammonia on the lubricating oil was also explored. This work can be a foundational contribution to the lubricating oil for the ammonia engine.

作为一种富氢无碳燃料，氨在发动机领域引起了极大关注。然而，有关氨发动机润滑油的研究却很少，这阻碍了氨发动机的发展。为了研究氨对润滑油理化性质和润滑性能的影响，我们制备了水-润滑油和润滑油-水-氨。通过研究不同润滑油的分散稳定性、粘度、热稳定性和成膜能力，分析了氨对润滑油理化性质和润滑性能的影响。此外，还探讨了氨对润滑油的影响机理。这项工作可为氨发动机润滑油做出基础性贡献。

引用次数: 0

Fretting behavior of hydrogenated nitrile rubber for sealing application of ultra-deep well 超深井密封应用中氢化丁腈橡胶的摩擦行为

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2024-10-18 DOI: 10.1016/j.triboint.2024.110328

Zhangyu Qiao, Yanbao Guo, Zheng Zhang, Xingyu Wang, Deguo Wang

With complex operating conditions and frequent pressure fluctuations in ultra-deep wells, the fretting wear caused by tubing string vibration inevitably affects the sealing performance of packer cartridge during well completion. In response to reveal the fretting damaged mechanism of cartridge rubber, an experimental and simulated investigation was carried out. Reciprocating fretting tests of hydrogenated nitrile rubber (HNBR) against casing steel (N-80) were conducted at 25 ℃, 65 ℃, 105 ℃, 145 ℃, and the displacement amplitude ranges from 0.25– 4 mm. The results indicate that the fretting state transfers from mixed fretting region (MFR) to partial slip region (PSR)/MFR with the increased temperature under lower displacement amplitude (0.25–1 mm), where the wear rate shows a decline with the increased temperature. It is mainly because that the increased sticky characteristics with temperature can decline the relative sliding. Under larger displacement amplitude (2–4 mm), the running condition transferred from slip region (SR) to MFR with the increased temperature eventually, where the interface is mainly dominated by sliding. The wear rate shows a dramatically increase with the increase in temperature due to the sharply decline of mechanical properties. The interfacial displacement variation obtained by finite element calculation are verified with the running condition of fretting map (RCFM). The established materials response fretting map for HNBR can gave an epoch-making reference on how to identifying the risk of sealing failure duo to tubing string vibration for a packer. This research also can highly enrich the fretting tribological theory in terms of high temperature.

Statement of originality

I write on behalf of myself and all co-authors to confirm that the results reported in the manuscript are original and neither the entire work, nor any of its parts have been previously published. The authors confirm that the article has not been submitted to peer review, nor has been accepted for publishing in another journal. The authors confirm that the research in their work is original, and that all the data given in the article are real and authentic. If necessary, the article can be recalled, and errors corrected.

超深井作业条件复杂，压力波动频繁，在完井过程中，油管串振动引起的摩擦磨损不可避免地会影响封隔器胶筒的密封性能。为了揭示封隔器橡胶的摩擦磨损机理，我们进行了实验和模拟研究。分别在 25 ℃、65 ℃、105 ℃ 和 145 ℃ 下进行了氢化丁腈橡胶（HNBR）与套管钢（N-80）的往复烧蚀试验，位移幅度为 0.25-4 mm。结果表明，在较低的位移幅度（0.25-1 毫米）下，随着温度的升高，烧蚀状态从混合烧蚀区（MFR）转移到部分滑移区（PSR）/MFR，磨损率随温度升高而下降。这主要是因为随温度升高而增加的粘性会使相对滑动下降。在较大的位移振幅（2-4 毫米）下，随着温度的升高，运行条件最终从滑动区（SR）转移到多摩擦区（MFR），此时界面主要以滑动为主。由于机械性能急剧下降，磨损率随温度升高而急剧增加。有限元计算得到的界面位移变化与运行条件下的摩擦图（RCFM）进行了验证。所建立的 HNBR 材料响应摩擦图可以为如何识别封隔器因管线振动而导致密封失效的风险提供划时代的参考。原创性声明我谨代表我本人和所有共同作者确认，手稿中报告的结果是原创性的，整个工作或其任何部分以前都未曾发表过。作者确认该文章未提交同行评审，也未被其他期刊接受发表。作者确认其作品中的研究为原创，文章中提供的所有数据均真实可信。如有必要，可对文章进行修改，并更正错误。

{"title":"Fretting behavior of hydrogenated nitrile rubber for sealing application of ultra-deep well","authors":"Zhangyu Qiao, Yanbao Guo, Zheng Zhang, Xingyu Wang, Deguo Wang","doi":"10.1016/j.triboint.2024.110328","DOIUrl":"10.1016/j.triboint.2024.110328","url":null,"abstract":"<div><div>With complex operating conditions and frequent pressure fluctuations in ultra-deep wells, the fretting wear caused by tubing string vibration inevitably affects the sealing performance of packer cartridge during well completion. In response to reveal the fretting damaged mechanism of cartridge rubber, an experimental and simulated investigation was carried out. Reciprocating fretting tests of hydrogenated nitrile rubber (HNBR) against casing steel (N-80) were conducted at 25 ℃, 65 ℃, 105 ℃, 145 ℃, and the displacement amplitude ranges from 0.25– 4 mm. The results indicate that the fretting state transfers from mixed fretting region (MFR) to partial slip region (PSR)/MFR with the increased temperature under lower displacement amplitude (0.25–1 mm), where the wear rate shows a decline with the increased temperature. It is mainly because that the increased sticky characteristics with temperature can decline the relative sliding. Under larger displacement amplitude (2–4 mm), the running condition transferred from slip region (SR) to MFR with the increased temperature eventually, where the interface is mainly dominated by sliding. The wear rate shows a dramatically increase with the increase in temperature due to the sharply decline of mechanical properties. The interfacial displacement variation obtained by finite element calculation are verified with the running condition of fretting map (RCFM). The established materials response fretting map for HNBR can gave an epoch-making reference on how to identifying the risk of sealing failure duo to tubing string vibration for a packer. This research also can highly enrich the fretting tribological theory in terms of high temperature.</div></div><div><h3>Statement of originality</h3><div>I write on behalf of myself and all co-authors to confirm that the results reported in the manuscript are original and neither the entire work, nor any of its parts have been previously published. The authors confirm that the article has not been submitted to peer review, nor has been accepted for publishing in another journal. The authors confirm that the research in their work is original, and that all the data given in the article are real and authentic. If necessary, the article can be recalled, and errors corrected.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110328"},"PeriodicalIF":6.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536080","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}

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