Multi-sphere shape generator for DEM simulations of complex-shaped particles

TL;DR

This paper introduces MSS, an efficient algorithm for generating multi-sphere representations of complex particles in DEM simulations, offering improved shape approximation and reduced computational costs compared to existing methods.

Contribution

The paper presents MSS, a novel algorithm that enhances shape accuracy and computational efficiency in multi-sphere particle generation for DEM simulations.

Findings

MSS achieves closer shape approximation with fewer spheres.

MSS reduces computational costs compared to existing methods.

Demonstrates improved accuracy in complex-shaped particle modeling.

Abstract

MSS is an algorithm to determine the radii and positions of spheres that fill a given volume. In the context of granular materials, MSS is a particle generator for DEM simulations of complex-shaped particles. Here, each particle of a given shape is represented by a set of spheres that collectively approximate the particle. This technique of particle shape representation is often referred to as the multi-sphere approach. We show that, for a given number of spheres, MSS provides a closer approximation to the target shape at lower computational costs than other DEM multi-sphere particle generators reported in the literature.