With the flourishing number of small body missions that involve surface interactions,
understanding the mechanics of spacecraft–surface interactions is crucial for improving our …

The discrete element method (DEM) is usually applied in analyzing the scientifical
origin/evolution of the asteroids and the landing/sampling of the regolith. In order to manage …

Previous missions have revealed that small Solar system bodies are topographically
diverse, which raises an immense challenge to a lander that aims to perform scientific …

This paper presents an implementation of the contact dynamics method for discrete non-
spherical particles. The algorithm can handle particles with a wide range of geometries as …

The long, shallow, parallel grooves that cut across the surface of the Martian moon Phobos
remain enigmatic, with distinct implications for understanding the evolution of loose airless …

This paper presents an efficient CUDA-based implementation of a nonspherical discrete
element method where irregular particles are described by using polyhedrons. Two …

Small bodies in the solar system are known to be covered by a layer of loose
unconsolidated soil composed of grains ranging from dusty sands to rugged boulders …

Meteoroid disintegration in the atmosphere can produce airbursts that pose regional/global
threats to the Earth. Precise dynamical simulation of hypersonic meteoroids is necessary for …

We consider the penetration dynamics of a vertical cylinder into a dry granular medium
subjected to successive impacts. The depth of the impactor below the free surface z N first …

Pavement compaction is a process of structure evolution of materials accompanied by
energy dissipation, which is closely related to the inherent granular properties of asphalt …