Vertical drag force acting on intruders of different shapes in granular media

Open access
Date
2017Type
- Conference Paper
Abstract
The penetration of large objects into granular media is encountered commonly both in nature (e.g. impacts of meteors and projectiles) and engineering applications (e.g. insertion of tractor blades into sand). The motion of the impacting intruder in granular media is resisted by a granular drag force. In this work, we assess the effect of intruder shape on the granular drag force using discrete element modelling (DEM). The following intruder shapes were modelled: spherical, conical, cylindrical and cubical. We observed that the drag force can be described well by a power-law relationship with intrusion depth, independent of the intruder shape. However, the exponent of the power-law expression increases with increasing “flatness” of the intruder’s impacting surface due to an increasing fraction of the granular media affected by the impact of the intruder. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000193133Publication status
publishedExternal links
Journal / series
EPJ Web of ConferencesVolume
Pages / Article No.
Publisher
EDP SciencesEvent
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