Collapsing granular suspensions

TL;DR

This paper introduces a 2D contact dynamics model to simulate the collapse of granular suspensions and compares it with real soil data, demonstrating similar shear strength behavior during collapse.

Contribution

The study presents a novel microscopic model for collapsing suspensions and validates it against real soil measurements, bridging simulation and real-world behavior.

Findings

Model accurately reproduces shear strength behavior of collapsing soil.

Shear strength patterns are consistent between the model and natural soil.

Model captures key physical processes of suspension collapse.

Abstract

A 2D contact dynamics model is proposed as a microscopic description of a collapsing suspension/soil to capture the essential physical processes underlying the dynamics of generation and collapse of the system. Our physical model is compared with real data obtained from in situ measurements performed with a natural collapsing/suspension soil. We show that the shear strength behavior of our collapsing suspension/soil model is very similar to the behavior of this collapsing suspension soil, for both the unperturbed and the perturbed phases of the material.