In-place determination of topsoil shear properties for mobility study
Résumé
A prototype experimental device was developed to perform shear tests by translation of a charged plate on soil at slow speed representative of soil mechanics tests, or fast speed representative of the slip kinetics of a vehicle's running gear. The soil tested was clean sand with frictional behaviour. In order to identify the failure mechanism, the shear test was numerically simulated with DEM modelling. The mechanism identified showed a failure located on juxtaposed and successive slip lines. The analytical simulation of this mechanism makes it possible to calculate its geometry by analogy with the experimental results and to identify the mechanisms involved in the sinkage induced by shearing.
Domaines
Génie civilOrigine | Fichiers produits par l'(les) auteur(s) |
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