A MULTIDISCIPLINARY PLATFORM FOR FUTURE TRIBOLOGICAL MODELLING

未来摩擦学建模的多学科平台

• 批准号: EP/N025954/1
• 负责人: Daniele Dini
• 金额: $ 153.58万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FN025954%2F1
• 关键词: MULTIDISCIPLINARY; PLATFORM; FUTURE; TRIBOLOGICAL; MODELLING

Almost all engineering systems and many biological ones contain components that are loaded and rub against one another, such as gears and bearings in machines and hip and knee joints in humans. This rubbing results both in friction, that wastes energy, and in wear and other forms of surface damage that lead to machine (and human) downtime, and the need for expensive repair and replacement. This whole field of research is called Tribology and is pivotal both in the quest for sustainability, including reducing CO2 emissions, and in improving the quality of our lives.In Tribology the effects of rubbing, such as frictional dissipation and wear, are perceived as macroscale phenomena and are traditionally studied by macroscale experiments and analysis. However they actually originate at the atomic and molecular scale, where the severe local stresses produced by rubbing cause restructuring of surface layers, while the molecules of lubricant in rubbing contacts interact with and protect surfaces. Thus to understand and so improve tribological systems we need an approach that spans the molecular, meso- and macro-scales. This will yield both information as to the origins of friction and surface damage - and unwanted phenomena are best tackled at their roots - as well as the ability to design macro-scale components such as lubricants, bearings, gears, engines and replacement joints that operate reliably and efficiently for as long as required.To meet this need, the proposed research will develop and apply advanced techniques to model rubbing contacts at all the necessary scales - atomic/molecular simulations of surfaces and lubricants, meso-scale modelling looking at structural evolution of surfaces due to rubbing, and macro-scale simulations of actual rubbing components such as bearings and engines. These simulations will be validated by experiments that also span the same range of scales, including direct observation of molecules in rubbing contacts. The most critical and innovative stage of this project, however, will be to link all these models together in to a single computer-based package. The result will be a set of modelling programs that can be used in many different ways; for example to explore the origins of tribological phenomena; to optimise lubricant surface and materials design; to predict performance of machines based on a combination of design and underlying atomic/molecular processes.Such an approach will give us tools both to understand in full tribological phenomena such as friction and wear and to enable effective "virtual testing", where new and novel designs, lubricants and surfaces can be combined and their effectiveness tested prior to recourse to time-consuming and expensive experimental development.

几乎所有工程系统和许多生物学系统都包含装载并互相摩擦的组件，例如机器中的齿轮和轴承以及人类的臀部和膝关节。这种摩擦会导致摩擦，浪费能量，以及导致机器（和人）停机时间的磨损和其他形式的表面损伤，以及需要昂贵的维修和更换。整个研究领域被称为摩擦学，在寻求可持续性（包括减少二氧化碳排放量）和改善我们生活质量的过程中都是关键的。然而，它们实际上起源于原子和分子尺度，在该量表中，摩擦产生的严重局部应力会导致表面层的重组，而摩擦接触中润滑剂的分子与摩擦接触中的分子相互作用并保护表面。因此，为了理解并改善摩擦学系统，我们需要一种跨越分子，中间和宏观尺度的方法。这将产生有关摩擦和表面损伤起源的信息 - 以及不需要的现象，以及它们的根源以及设计宏观尺度组件（例如润滑剂，轴承，齿轮，齿轮，发动机，发动机和替换关节）的能力，可在需要时可靠地进行此类研究，以满足所需的型号。对表面和润滑剂的原子/分子模拟，在摩擦而观察表面的结构演化以及对实际摩擦组件（例如轴承和发动机）的宏观尺度模拟的宏观尺度模拟。这些模拟将通过跨越相同尺度的实验来验证，包括直接观察摩擦接触中的分子。但是，该项目中最关键和创新的阶段是将所有这些模型链接到一个基于计算机的软件包中。结果将是一组建模程序，可以通过多种不同的方式使用。例如，探索摩擦学现象的起源；优化润滑剂表面和材料设计；基于设计和基础原子/分子过程的结合来预测机器的性能。舒适的方法将为我们提供工具，可以在诸如摩擦和磨损等完整的摩擦学现象中理解，并启用有效的“虚拟测试”，在这种情况下，可以将新的和新颖的设计，润滑剂和表面兼而有之，可以将其结合起来，及其有效的经验，以实验和昂贵的实验，并进行了昂贵的实验。

项目成果

OVINE KNEE KINEMATICS AND CONTACT PRESSURES OF A NOVEL FIBRE MATRIX-REINFORCED HYDROGEL TOTAL MENISCUS REPLACEMENT

新型纤维基质增强水凝胶全半月板置换术的羊膝关节运动学和接触压力

• DOI: 10.1302/1358-992x.2023.9.014
• 发表时间: 2023
• 期刊: Orthopaedic Proceedings
• 作者: Bartolo M

Series Active Variable Geometry Suspension application to comfort enhancement

• DOI: 10.1016/j.conengprac.2016.11.011
• 发表时间: 2017-02
• 期刊: Control Engineering Practice
• 影响因子: 4.9
• 作者: C. Arana;S. Evangelou;D. Dini

How does roughness kill adhesion?

粗糙度如何消除粘附力？

• DOI: 10.1016/j.jmps.2023.105465
• 发表时间: 2023
• 期刊: Journal of the Mechanics and Physics of Solids
• 影响因子: 5.3
• 作者: Afferrante L

Advanced modelling of lubricated interfaces in general curvilinear grids

一般曲线网格中润滑界面的高级建模

• DOI: 10.1016/j.triboint.2023.108727
• 发表时间: 2023
• 期刊: Tribology International
• 影响因子: 6.2
• 作者: Ardah S

Polymer brushes for friction control: Contributions of molecular simulations.

• DOI: 10.1116/6.0002310
• 发表时间: 2023-01
• 期刊: Biointerphases
• 影响因子: 2.1
• 作者: Mohamed A Abdelbar;J. Ewen;D. Dini;S. Angioletti-Uberti