Collective evolution of pebble populations

János Török, András Árpád Sipos, Gábor Domokos

We study the collective abrasion of pebbles with focus on the size distribution. Particles of different size hit each other with different probability and energy and their effect on each other also depends on their relative size. Our aim is to deliver a model which can predict the evolution of the particle size distribution during collective abrasion.

Abrasion of sand particles

Eszter Fehér, Gábor Domokos

Shape evolution due to abrasion is investigated on different size-scales. Measurements are carried out to analyze the shape of sand particles in different stages of abrasion and compare their properties to pebbles. Furthermore, we mechanically abrade particles in our laboratory and compare them to naturally abraded samples.