Reuniting Micro And Macro Mechanics In Sands: A Systematic Approach

重新结合沙子中的微观和宏观力学：系统方法

• 批准号: EP/W000563/1
• 负责人: Beatrice Baudet
• 金额: $ 84.87万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW000563%2F1
• 关键词: Reuniting; Micro; Macro; Mechanics; Sands

Soil behaviour is complex due to their particulate nature and natural origins. There are many factors to consider, such as pressure, density, particle breakage, thermo-chemical effects, so that the engineer necessarily has to select which are important for the design, with the high likelihood of making the wrong choice. For coarser grained soils such as sands, particulate methods, which model the sand as an assembly of grains rather than a continuum, are increasingly popular. Research on micromechanics has become very sophisticated, but it rarely provides the complete connected thread from the particle characterisation, through the micromechanics to the macroscopic behaviour, and the micro-macro link is tenuous. This project will tackle the long-existing research aim of linking micro to macro in a more systematic manner, using experimental and numerical approaches, for in-depth investigations of sand grain characteristics, contact mechanics and real contact area, macro-behaviour and macro-fabric, and the link between micro and macro.

由于其颗粒性质和自然起源，土壤行为非常复杂。有很多因素需要考虑，例如压力、密度、颗粒破碎、热化学效应，因此工程师必须选择对设计重要的因素，很可能做出错误的选择。对于沙子等粗粒土壤，颗粒方法越来越受欢迎，该方法将沙子建模为颗粒的集合体而不是连续体。微观力学的研究已经变得非常复杂，但它很少提供从粒子表征、微观力学到宏观行为的完整连接线索，并且微观与宏观的联系是脆弱的。该项目将解决长期存在的以更系统的方式将微观与宏观联系起来的研究目标，利用实验和数值方法，深入研究沙粒特征、接触力学和真实接触面积、宏观行为和宏观结构以及微观和宏观之间的联系。

项目成果

Plastic deformation effect on contact behaviour in granular materials

塑性变形对颗粒材料接触行为的影响

• DOI: 10.1007/s10035-024-01394-7
• 发表时间: 2024
• 期刊: Granular Matter
• 影响因子: 2.4
• 作者: Altuhafi F