Collaborative Research: Quantitative Prediction of Sliding Friction Using Integrated Theory and Experiments
合作研究:利用理论与实验相结合的滑动摩擦定量预测
基本信息
- 批准号:1265742
- 负责人:
- 金额:$ 48.4万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2013
- 资助国家:美国
- 起止时间:2013-08-01 至 2016-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This research is about obtaining a quantitative understanding of energy dissipation, interfacial structure and friction of model boundary films. While theoretical methods have hitherto been able to provide qualitative insights into sliding friction, they have not yet been able to quantitatively describe the structure of a sliding interface and the associated friction forces. The approach of this research will be to combine experiments in ultrahigh vacuum on well-defined model boundary films consisting of a range of isostructural alkali halides on metal substrates with molecular dynamics simulations using tailored, high-precision interaction potentials obtained from density function theory calculations of the same systems. If successful, the benefits of this research will include an understanding of the friction properties of the boundary films that are formed by chemical reactions between lubricant additives or gas-phase lubricants at a sliding, solid-solid interface. This fundamental understanding will underpin efforts to design effective lubricants that form films with low friction or wear, thereby resulting in energy savings and longer machine lifetimes, and benefit the United States? economy. In addition, understanding sliding friction poses a unique experimental challenge because the processes occur at an inaccessible, sliding solid-solid interface that cannot be interrogated directly. This means that advances in understanding such interfaces will rely on integrating experiments and theoretical methods carried out on the same systems. Being able to achieve this for the simple systems explored in this proposal will develop the theoretical and experimental strategies for understanding more complex sliding interfaces. Finally, the integrated experimental and theoretical approaches will provide a broad-based education for students and will involve both undergraduates and under-represented minorities. Developments in theoretical methods and the refinement of experimental approaches over the past few decades have resulted in a fundamental shift in the way that science is carried out and will require both graduate and undergraduate education that integrates theory and experiment. This has been emphasized in a recent special issue of Tribology Letters co-edited by the Principal Investigators of this proposal entitled ?Progress in Tribology Through Integrated Simulations and Experiments?.
本研究旨在对模型边界膜的能量耗散、界面结构和摩擦力进行定量研究。 虽然迄今为止的理论方法已经能够提供定性的见解滑动摩擦,他们还没有能够定量地描述的结构的滑动界面和相关的摩擦力。 本研究的方法将是联合收割机实验在真空中定义良好的模型边界膜组成的一系列的同构碱金属卤化物的金属基板与分子动力学模拟使用定制的,高精度的相互作用势从密度泛函理论计算相同的系统。 如果成功的话,这项研究的好处将包括了解边界膜的摩擦性能,这些边界膜是由润滑剂添加剂或气相润滑剂在滑动的固-固界面处的化学反应形成的。 这一基本认识将有助于设计有效的润滑剂,形成低摩擦或磨损的薄膜,从而节省能源和延长机器寿命,并使美国受益。经济 此外,理解滑动摩擦提出了一个独特的实验挑战,因为该过程发生在一个不可接近的,滑动的固体-固体界面,不能直接询问。 这意味着理解这些界面的进展将依赖于在相同系统上进行的实验和理论方法的整合。 能够实现这一点的简单系统中探索的建议将开发理解更复杂的滑动界面的理论和实验策略。 最后,综合实验和理论方法将为学生提供基础广泛的教育,并将涉及本科生和代表性不足的少数民族。 在过去的几十年里,理论方法的发展和实验方法的改进导致了科学研究方式的根本转变,这将需要将理论和实验相结合的研究生和本科教育。 这一点在最近一期的《摩擦学快报》中得到了强调,这一期由该提案的主要研究者共同编辑,标题为?模拟与实验相结合的摩擦学研究进展。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Wilfred Tysoe其他文献
Shear Thinning and Stress-Dependent Viscosity Activation Volumes: Combining Eyring and Carreau
- DOI:
10.1007/s11249-025-02047-3 - 发表时间:
2025-07-23 - 期刊:
- 影响因子:3.300
- 作者:
Nicholas Hopper;Dennis W. Bennett;Rosa M. Espinosa-Marzal;Wilfred Tysoe - 通讯作者:
Wilfred Tysoe
Wilfred Tysoe的其他文献
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{{ truncateString('Wilfred Tysoe', 18)}}的其他基金
Understanding Mechanical Activation of Chemical Reactions on Surfaces
了解表面化学反应的机械活化
- 批准号:
2020525 - 财政年份:2020
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
Collaborative Research: Enantioselectivity in Heterogeneous Catalysts via the Addition of Chiral Modifiers
合作研究:通过添加手性修饰剂实现多相催化剂的对映选择性
- 批准号:
1855199 - 财政年份:2019
- 资助金额:
$ 48.4万 - 项目类别:
Continuing Grant
Collaborative Research: Pushing Molecules Around: Identifying and Understanding the Elementary Steps in Tribochemical Reactions
合作研究:推动分子:识别和理解摩擦化学反应的基本步骤
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1634340 - 财政年份:2016
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
International Nanotribology Forum; Kerala, India; January 2014
国际纳米摩擦学论坛;
- 批准号:
1341996 - 财政年份:2014
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
Surface Reaction Pathways on Model Gold Palladium Alloy Catalysts
模型金钯合金催化剂的表面反应路径
- 批准号:
1109377 - 财政年份:2011
- 资助金额:
$ 48.4万 - 项目类别:
Continuing Grant
Understanding the Frictional Properties of Boundary Films
了解边界膜的摩擦特性
- 批准号:
0826151 - 财政年份:2008
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
An Ultrahigh Vacuum Investigation of the Chemistry and Tribology of Extreme Pressure Lubricant Additives
极压润滑油添加剂的化学和摩擦学的超高真空研究
- 批准号:
0654276 - 财政年份:2007
- 资助金额:
$ 48.4万 - 项目类别:
Continuing Grant
Pan-American Advanced Studies Institutes (PASI): Study of Surfaces, Interfaces and Catalysis, Cuernavaca, Mexico, April 15 - April 20, 2007
泛美高级研究所 (PASI):表面、界面和催化研究,墨西哥库埃纳瓦卡,2007 年 4 月 15 日至 20 日
- 批准号:
0613922 - 财政年份:2006
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
MRI: Acquisition of an Ultrahigh Vacuum Atomic Force Microscopy Apparatus
MRI:获得超高真空原子力显微镜设备
- 批准号:
0521328 - 财政年份:2005
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
An Ultrahigh Vacuum Investigation of the Chemistry and Tribology of Extreme-Pressure Lubricant Additives
极压润滑油添加剂的化学和摩擦学的超高真空研究
- 批准号:
0091659 - 财政年份:2001
- 资助金额:
$ 48.4万 - 项目类别:
Standard Grant
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