Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Seguin, Antoine"'
Publikováno v:
Phys. Rev. E 106, 054904 (2022)
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 evolves linearly with the impact number $N$ and then follows a power-
Externí odkaz:
http://arxiv.org/abs/2211.04801
Autor:
Bonnemain, Thibault, Butano, Matteo, Bonnet, Théophile, Echeverría-Huarte, Iñaki, Seguin, Antoine, Nicolas, Alexandre, Appert-Rolland, Cécile, Ullmo, Denis
The local navigation of pedestrians amid a crowd is generally believed to involve no anticipation beyond (at best) the avoidance of the most imminent collisions. We show that current models rooted in this belief fail to reproduce some key features ex
Externí odkaz:
http://arxiv.org/abs/2201.08592
Autor:
Seguin, Antoine, Crassous, Jérôme
Combining experiments and numerical simulations with a mechanical/statistical model of twisted yarns, we discuss the spinning transition between a cohesion-less assembly of fibers into a yarn. We show that this transition is continuous but very sharp
Externí odkaz:
http://arxiv.org/abs/2110.04206
Autor:
Seguin, Antoine, Dauchot, Olivier
Publikováno v:
Phys. Rev. Lett. 117, 228001 (2016)
Analyzing the dynamics of a vibrated bi-dimensional packing of bidisperse granular discs below jamming, we provide evidences of a Gardner phase deep into the glass phase. To do so we perform several independent compression cycles within the same glas
Externí odkaz:
http://arxiv.org/abs/1605.00827
Autor:
Seguin, Antoine
L'objectif de ce travail réside dans la compréhension de la force sur un objet pénétrant un milieu granulaire. À partir de mesures de forces sur un cylindre en pénétration à vitesse constante, nous avons caractérisé cette force qui est ind
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00727081
http://tel.archives-ouvertes.fr/docs/00/72/70/81/PDF/TheseSeguin.pdf
http://tel.archives-ouvertes.fr/docs/00/72/70/81/PDF/TheseSeguin.pdf
Publikováno v:
Materiaux & Techniques, Volume 103, Number 3, 2015
We investigate experimentally the mechanical response to shear of a 2D packing of grains across the jamming transition. First, we develop a dedicated experimental setup, together with tracking and photoelastic techniques in order to prepare the packi
Externí odkaz:
http://arxiv.org/abs/1506.04616
Publikováno v:
Phys. Rev. Lett. 113, 198001 (2014)
We investigate experimentally the mechanical response of a monolayer of bi-disperse frictional grains to an inhomogeneous shear perturbation across the jamming transition. We inflate an intruder inside the packing and use photo-elasticity and trackin
Externí odkaz:
http://arxiv.org/abs/1403.5885
Publikováno v:
Phys. Rev. Lett. 107, 048001 (2011)
We present in this Letter experimental results on the bidimensional flow field around a cylinder penetrating into dense granular matter together with drag force measurements. A hydrodynamic model based on extended kinetic theory for dense granular fl
Externí odkaz:
http://arxiv.org/abs/1106.4919
Publikováno v:
EPL 88, 44002 (2009)
The penetration by a gravity driven impact of a solid sphere into a granular medium is studied by two-dimensional simulations. The scaling laws observed experimentally for both the final penetration depth and the stopping time with the relevant physi
Externí odkaz:
http://arxiv.org/abs/0907.3453
Publikováno v:
Phys. Rev. E 78, 010301(R) (2008)
We study experimentally the influence of confinement on the penetration depth of impacting spheres into a granular medium contained in a finite cylindrical vessel. The presence of close lateral walls reduces the penetration depth, and the characteris
Externí odkaz:
http://arxiv.org/abs/0805.4189