Impact tests were conducted using a specially made drop hammer impact device on concrete specimens (C60–C90) containing lean iron ore from mine waste as coarse aggregate to realize enhanced resistance in applications such pile driving. also equivalent conventional limestone for comparison. The statistical analysis results show that the number of impacts at initial and final cracking conformed W...

A numerical study by the code GERRIS of drop impact onto a solid surface is presented. It is shown that under the incompressible assumption, drop impact can still perform different behaviors by changing the density or viscosity of surrounding gas, the splash can be suppressed for small gas density or viscosity and a no-vertical frontier exists between splash and non-splash. It is suggested that...

We simulate the onset and evolution of the earliest splashing of an infinite cylindrical liquid drop on a smooth dry solid surface. A tiny splash is observed to be emitted out of the rim of the lamella in the early stage of the impact. We find that the onset time of the splash is primarily dependent on the characteristic timescale, which is defined by the impact velocity as well as the drop rad...

When a particle is attached under liquid drop by surface tension, it forms solid–liquid compound drop. We investigate experimentally the impact dynamics of this onto solid surface. After impact, rebounds from and rises through The can either remain in deposited at low velocities or separate above critical velocity. demonstrate here that as viscosity increases, separation threshold transitions c...