Multiscale problems and analysis of soil mechanics

作者：Fang, Ying-Guang; Li, Bo^*

来源：Mechanics of Materials, 2016, 103: 55-67.

DOI：10.1016/j.mechmat.2016.09.003

• Multiscale soil media
• Properties of particle and structure
• Intrinsic length scale
• Multiscale coupling
• Soil cell element model
• Multiscale analysis method

Soil medium is the research focus of soil mechanics. Soil is a mutiphase geological material consisting of soil particles and structures at various scales. The mechanical behaviour of soil involving the interaction of multiscale particle and structure has an important influence on its macroscopic mechanical properties. The present work mainly analyse the particle and structural characteristics of soil and the physical and mechanical mechanism of the mutiscale coupling properties of them. In addition, the mutiscale problems in the deformation process and the nonlinear phenomena associated with deformation localisation, parameter sensitivity and catastrophe are discussed. Furthermore, a new energy criterion for the division of particle scales and multiscale soil cell element model are established. Moreover, approaches to the mutiscale problems, such as fractional-step coupling, particle size effect analysis and multiscale nested model analysis methods, are proposed.

• 出版日期2016-12
• 单位华南理工大学