# Athermal shearing of frictionless cross-shaped particles of varying aspect ratio

## TL;DR

This study uses numerical simulations to analyze how particle shape non-convexity influences jamming, rotation, and ordering in shear-driven, frictionless, athermal particle systems of various shapes and aspect ratios.

## Contribution

It introduces a detailed comparison of cross-shaped particles with rods and staples, highlighting the impact of non-convexity on flow and jamming behavior.

## Key findings

- Non-convexity significantly affects jamming density.
- Particle shape influences rotational dynamics and ordering.
- Aspect ratio variations alter flow properties.

## Abstract

We use numerical simulations to study the shear-driven steady-state flow of athermal, frictionless, overdamped, two dimensional cross-shaped particles of varying aspect ratios, and make comparison with the behavior of rod-shaped and staple-shaped particles. We find that the extent of non-convexity of the particle shape plays an important role in determining both the value of the jamming packing fraction as well as the rotational motion and orientational ordering of the particles.