Mikroskopische Grundlagen der mechanischen Eigenschaften feuchter Schüttgüter

潮湿散装材料机械性能的微观基础

• 批准号: 5365852
• 负责人: Professor Dr. Stephan Herminghaus
• 金额: --
• 依托单位: Max-Planck-Institut für Dynamik und Selbstorganisation (MPIDS)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2005-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5365852?language=en
• 关键词: Mikroskopische; Grundlagen; der; mechanischen; Eigenschaften

What are the conditions for a land-slide to occur? What keeps sand castles standing? How does a granular medium behave at different humidity, and why? These questions, which are of interest by far not only for physicists, reach down to the microscopic mechanisms of wetting of the grains of the material under discussion, in their particular arrangement. There is presently an enormous surge of interest in granular media, not only for reasons of their wide applicational potential, but also due to the scarcity of questions answered to date in this field. The main emphasis, however, is still on dry systems, since humid particulates are still much more complicated than dry ones. However, since the former are of much larger practical relevance than the latter, well defined experiments, and realistic, tractable models are badly needed in order to successfully tackle the problem of understanding the influence of moisture on particulate systems. This is the impetus of the present project.

山体滑坡发生的条件是什么？是什么让沙堡屹立不倒？颗粒介质在不同湿度下的表现如何，为什么？到目前为止，这些问题不仅对物理学家感兴趣，还涉及所讨论的材料颗粒在其特定排列中的润湿微观机制。目前，人们对颗粒介质的兴趣激增，不仅是因为它们具有广泛的应用潜力，而且还因为迄今为止该领域缺乏答案的问题。然而，主要重点仍然是干燥系统，因为潮湿颗粒仍然比干燥颗粒复杂得多。然而，由于前者比后者具有更大的实际意义，因此迫切需要明确的实验和现实、易于处理的模型，以便成功解决了解水分对颗粒系统影响的问题。这就是本项目的动力。