A multi-scale theory of unsaturated porous media under extreme loading

极端载荷下非饱和多孔介质的多尺度理论

• 批准号: DP140100945
• 负责人: Prof Luming Shen
• 金额: $ 28.33万
• 依托单位: The University of Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-02-25 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140100945
• 关键词: multi; scale; theory; unsaturated; porous

Extreme loading induced by impacts, explosives or earthquakes generates stress wave propagation through unsaturated media; this can lead to rock fracturing and soil liquefaction and severely damage civil, mining and military infrastructures and operations. The project aims to develop a novel experimentally-validated theory, with associated models, for describing dynamic responses of unsaturated porous media subject to extreme loading. Our continuum framework will allow building constitutive models directly from saturation-dependent contact laws at the micro-scale. This will remove the need to use the site-dependent empirical models and thus give the derived constitutive models truly predictive capabilities.

由冲击、爆炸或地震引起的极端载荷会产生应力波通过非饱和介质传播;这可能导致岩石破裂和土壤液化，并严重破坏民用、采矿和军事基础设施和运营。该项目旨在开发一种新的实验验证的理论，与相关的模型，用于描述非饱和多孔介质的动态响应受到极端负载。我们的连续体框架将允许直接从饱和度相关的接触法在微观尺度上建立本构模型。这将消除需要使用的网站依赖的经验模型，从而得到的本构模型真正的预测能力。