Energy dissipation in dry sliding friction
干滑动摩擦中的能量耗散
基本信息
- 批准号:450047379
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Units
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The friction force that an object experiences when sliding on a solid surface is intrinsically linked to the "dissipation" of energy. This dissipation occurs because sliding systems are driven into a non-equilibrium state by the external force. Dissipation is often empirically modeled using a viscous damping term, for example in the commonly applied phenomenological Prandtl model of sliding friction. As part of the Research Unit "Reducing complexity of nonequilibrium systems", this project aims at identifying pathways of energy dissipation in molecular dynamics simulations of dry sliding friction of crystalline and disordered solids. We will calculate fundamental vibrational modes of the solid and measure their excitation and how these excitations are thermalized during sliding. From this analysis, we build a coarse-grained model for sliding systems. Systematically derived from first-principles, this coarse-grained model will have predictive power superseding the Prandtl model and enable the design low friction interfaces.
物体在固体表面上滑动时所受到的摩擦力与能量的“耗散”有着内在的联系。这种耗散的发生是因为滑动系统被外力驱动进入非平衡状态。耗散通常使用粘性阻尼项进行经验建模,例如在滑动摩擦的普遍应用的现象学普朗特模型中。作为“降低非平衡系统的复杂性”研究单元的一部分,该项目旨在确定结晶和无序固体干滑动摩擦的分子动力学模拟中的能量耗散途径。我们将计算固体的基本振动模式,并测量它们的激发以及这些激发在滑动过程中如何被热化。从这个分析,我们建立了一个粗粒度的模型滑动系统。从第一原理系统地得出,这种粗粒度的模型将取代普朗特模型的预测能力,并使设计低摩擦界面。
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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Professor Dr. Michael Moseler其他文献
Professor Dr. Michael Moseler的其他文献
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{{ truncateString('Professor Dr. Michael Moseler', 18)}}的其他基金
Solid lubrication by carbon nanotubes: Understanding transfer layer formation and sliding at a fundamental level using atomistic simulations and experimental nano analytics
碳纳米管固体润滑:使用原子模拟和实验纳米分析从基础层面了解传输层的形成和滑动
- 批准号:
407711892 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Priority Programmes
Ab-initio-Modelling of the mechano-chemical Reactions of atmospheric Gases with tribologically loaded Carbon Anti-Wear Coatings
大气气体与摩擦负载碳抗磨涂层的机械化学反应的从头开始建模
- 批准号:
250640060 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Dynamics of capillary surfaces at the nano and meso scale and their impact on dispensing devices: development of a free surface dissipative particle dynamics method
纳米和介观尺度毛细管表面动力学及其对点胶装置的影响:自由表面耗散粒子动力学方法的发展
- 批准号:
5425639 - 财政年份:2004
- 资助金额:
-- - 项目类别:
Priority Programmes
Multiscale modeling of supported metal clusters: Exploring the electronic structure of nano-catalysts
负载金属簇的多尺度建模:探索纳米催化剂的电子结构
- 批准号:
5404721 - 财政年份:2003
- 资助金额:
-- - 项目类别:
Priority Programmes
Erlernen moderner ab initio Methoden zur Simulation von Nanostrukturen
学习模拟纳米结构的现代从头算方法
- 批准号:
5148406 - 财政年份:1998
- 资助金额:
-- - 项目类别:
Research Fellowships
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