changing the impact velocity and the size of the disc.'
author:
- 'Bhupalendra Behera$^{1,3}$, Ferenc Kun${}^2$, Sean McNamara${}^1$, and Hans J. Herrmann${}^1$'
title: Fragmentation of a circular disc by Impact on a Frictionless plate
---

Introduction {#intro}
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The strength and break-up of agglomerates composed of smaller sized primary particles is of particular importance for the storage and handling of materials in process industries such as pharmaceuticals, chemicals, fertilizers, detergent, and food industries. In industrial processes agglomerates often collide with each other and with the hard walls of the equipment resulting in a size reduction, which is desired or not depending on the type of the process. The strength of agglomerates has to be characterized for the design of operating conditions in industrial processes such as milling, tabletting, mixing, and transport in pneumatic conveying. Another important class of agglomerates are the so-called particle compounds, which are the combination of various sized particles embedded in a cementous matrix. The different types of engineering agglomerates and building materials like concretes are some examples of particle compounds. It is of high industrial importance to recycle these particle compounds in order to use the valuable aggregates. The design and optimization of the liberation process 