岩土类颗粒物质在自然界, 工程建设以及日常生活中普遍存在, 其运动特性的研究在力学界已经
开展了几十年. 在近20 年开展的一系列小尺寸物理实验中, 颗粒物质表现出许多新奇现象 …

This paper investigates the definition of the stress tensor within a granular assembly, when
inertial effects are likely to occur. It is shown that the stress tensor can be expressed as a …

Collapse of granular material is usually accompanied by long run-out granular flows in
natural hazards, eg rock/debris flow and snow avalanches. This paper presents a novel …

In granular mechanics, macroscopic approaches treat a granular material as an equivalent
continuum at macro-scale, and study its constitutive relationship between macro-quantities …

Highlights•A calibration method to estimate average failure stress of particles was
proposed.•Maximum normal contact force and von Mises stress damage criteria were …

Underground excavation is usually accompanied by complex soil-structure interaction
problems in practical engineering. This paper develops a novel multi-scale approach for …

Granular materials react with complicated mechanical responses when subjected to external
loading paths. This leads to sophisticated constitutive formulations requiring large numbers …

Solving boundary value problems requires implementation of sufficiently robust constitutive
models. Most models try to incorporate a great deal of phenomenological ingredients, but …

In this paper, we present an improved discrete element method based on the non‐smooth
contact dynamics and the bi‐potential concept. The energy dissipated during the collisions …

In the field of granular materials, a link between the microscopic variables (contact force and
displacement) and macroscopic variables (stress and strain) requires an intermediate scale …