Fragmentation of Colliding Discs

TL;DR

This paper investigates the low-velocity impact of colliding discs, analyzing fragment ejection patterns, velocity, and mass distributions, revealing jet-like ejection, anomalous scaling, and power-law mass distribution.

Contribution

It introduces a cell model approach to study brittle solid collisions, providing new insights into fragment ejection, velocity scaling, and mass distribution behaviors.

Findings

Fragment ejection exhibits jet-like structure influenced by impact parameter.

Velocity components of fragments show anomalous scaling with impact conditions.

Mass distribution follows a power law for intermediate fragment sizes.

Abstract

We study the phenomena associated with the low-velocity impact of two solid discs of equal size using a cell model of brittle solids. The fragment ejection exhibits a jet-like structure the direction of which depends on the impact parameter. We obtain the velocity and the mass distribution of the debris. Varying the radius and the initial velocity of the colliding particles, the velocity components of the fragments show anomalous scaling. The mass distribution follows a power law in the region of intermediate masses.