An integrated experimental study is presented which aims at relating the frictional properties
at the particle scale to the bulk mechanical behavior for two different types of sands. We …

We investigated the interaction of proppant simulant (impactor) colliding on the surface of a
fractured rock by performing 3-dimensional discrete-based numerical simulations. The …

We investigated experimentally the normal coefficient of restitution (COR) of impactors
colliding on the surfaces of two different blocks; a soft‐porous block composed of plaster (dry …

The protection of the future lunar base from radiation, thermal stresses and impacts of
meteoroids can be achieved by several options, generally consisting in a shielding system …

The present study investigates the low-velocity impacts of a spherical projectile into a bed of
spherical particles using Discrete Element Method (DEM) simulations and laboratory …

With the rapid development of computer science, there are more and more kinds of discrete
dynamic systems. Computer integrated system CIMS, network communication database …

The analysis of the collision problem of solid objects is of interest in the fundamental study
and design of barrier systems protecting infrastructures against debris flows, which can be …

In geotechnics as well as in planetary science, it is important to find a means by which to
protect a base from impacts of micrometeoroids. In the moon, for example, covering a moon …

The displacement of a tunnel plays a crucial role in conventional tunneling methods, serving
as a key parameter for support requirement. Therefore, analyzing tunnel displacement is …

With the rapid development of the Internet, the amount of data increases sharply. In this
network age, data have been generated, such as multimedia, social networks, and search …