| Issue |
EPJ Web Conf.
Volume 340, 2025
Powders & Grains 2025 – 10th International Conference on Micromechanics on Granular Media
|
|
|---|---|---|
| Article Number | 06021 | |
| Number of page(s) | 4 | |
| Section | Geophysical, Environmental and Planetary Processes | |
| DOI | https://doi.org/10.1051/epjconf/202534006021 | |
| Published online | 01 December 2025 | |
https://doi.org/10.1051/epjconf/202534006021
Pressure and shear waves in lightly-confined granular columns
1 Department of Mechanical Engineering, IIT Kanpur, Kanpur, India
2 Department of Space, Planetary & Astronomical Sciences and Engineering, IIT Kanpur, Kanpur, India
3 Department of Earth and Space Science, Osaka University, Osaka, Japan
4 Department of Earth Science, IIT Kanpur, Kanpur, India
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Published online: 1 December 2025
Abstract
Waves in lightly confined granular media find application in extraterrestrial scenarios involving small bodies like asteroids where the gravitational pressures can be as low as a few pascals, as in the case of Itokawa. We report findings from discrete element (DE) simulations of pressure (P) and shear (S) wave transmissions through very lightly confined granular columns. We consider both monodisperse and bidisperse granular aggregates. Waves are excited in various ways, e.g., by a continuously driven wall at one end of the column, a short pulse, or a sinusoidal input. Our DE simulations are conducted on LAMMPS and were validated against the recent simulations on P waves [Sánchez, P, DJ Scheeres and AC Quillen 2022. Transmission of a seismic wave generated by impacts on granular asteroids. Planet. Sci. J. 3: 245].
© The Authors, published by EDP Sciences, 2025
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