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.

由影响，爆炸物或地震引起的极端负荷通过不饱和培养基产生应力波传播；这可能导致岩石破裂和土壤液化，并严重破坏民事，采矿和军事基础设施和行动。该项目的目的是开发一种具有相关模型的新型实验验证理论，以描述不饱和多孔媒体的动态响应，但受到极端负载的影响。我们的Continuum框架将允许直接从微尺度上的饱和依赖性接触定律构建本构模型。这将消除使用依赖网站的经验模型的需求，从而提供真正预测能力的派生构成模型。