The impact of an object on a granular solid is an ubiquitous phenomenon in nature, the
scale of which ranges from the impact of a raindrop onto sand all the way to that of a large …

In materials science, high performance is typically associated with regularity and order,
while disorder and the presence of defects are assumed to lead to sub-optimal outcomes …

We experimentally study nonlinear force propagation into granular material during impact
from an intruder, and we explain our observations in terms of the nonlinear grain-scale force …

Granular intrusions, such as dynamic impact or wheel locomotion, are complex multiphase
phenomena where the grains exhibit solid-like and fluid-like characteristics together with an …

The drag force on a spherical intruder in dense granular shear flows is studied using
discrete element method simulations. Three regimes of the intruder dynamics are observed …

Modeling of impact into granular substrates is a topic of growing interest over the last
decade. We present a fully continuum approach for this problem, which is shown to capture …

Eighty subscale penetration tests were performed to investigate penetration phenomenology
in granular media, with impact velocities in the range of 70–300 m/s. The parameter space …

We study the dynamic process occurring when a granular assembly is displaced by a solid
impactor. The momentum transfer from the impactor to the target is shown to occur through …

Understanding the mechanisms governing the interaction of high-velocity projectiles and
sand targets is important for numerous applications and industries. The high-velocity …

The impact of an intruder on granular matter leads to the formation of mesoscopic force
networks, which were seen particularly clearly in the recent experiments carried out with …