Séminaires PMMH

Séminaire PMMH - Site Jussieu

Contact :
Antonin Eddi
Sylvain Patinet
Etienne Reyssat

PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France

Tel : (33) 1 40 79 45 22

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7 quai Saint Bernard, 75005 PARIS

Le séminaire hebdomadaire du laboratoire PMMH a lieu tous les vendredis à 11h, au premier étage Barre Cassan, campus Jussieu.


Séminaire PMMH - Hiroaki Katsuragi (Nagoya University)

Vendredi 15 décembre 2017 11:00-12:00 - Bureau d'Etudes

Solid projectile impact onto a porous dust aggregate consisting of micrometer-sized particles

Porous dust aggregates consisting cohesive monomer grains are considered materials to build planetesimals in a protoplanetary disk. In order to reveal the history of planet formation, mechanical properties of dust aggregates have to be quantitatively understood. In this study, we perform a simple impact experiment to probe dynamic mechanical properties of dust aggregates [1]. A solid sphere is dropped onto a dust aggregate. Then the crater is formed by the target compression. When the impact energy is relatively large, fragmentation can also be observed. We discuss mechanical properties of dust aggregates through the impact dynamics. In particular, strength of dust aggregates is measured by the crater formation, drag force, and fragmentation threshold. In addition, the impact dynamics is compared with the macroscopic granular impact case.

[1] H. Katsuragi and J. Blum, arXiv:1709.03118.

PDF - 270.7 ko

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Séminaires récents  (18)

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    Flapping insects are remarkably agile fliers, adapted to a highly turbulent environment. We present a series of high resolution numerical simulations of a bumblebee interacting with fully developed turbulent inflow. We consider both tethered and free flight, the latter with all six degrees of freedom coupled to (...)
  • Séminaire PMMH - John Kolinski (EPFL)
    Vendredi 1er juin 11:00-12:00 - Salle réunion PMMH 1
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    John M. Kolinski, EMSI, EPFL, Lausanne Switzerland The propagation of a contact line at the interface between liquid and a dry solid is of great fundamental and practical importance. We experimentally probe the dynamics of wetting that occur when an impacting drop first contacts a dry surface. We show that the (...)
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    Vendredi 18 mai 11:00-12:00 - Salle réunion PMMH 1
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  • Séminaire PMMH - Giuseppe Zurlo (National University of Ireland)
    Vendredi 13 avril 11:00-12:00 - Salle réunion PMMH 1
    Manufacturing of information-rich elastic bodies through surface deposition.
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Instructions générales pour les conférenciers

Le public du séminaire est très hétérogène (rien qu’au PMMH nous travaillons sur des thématiques très diverses, mécanique des fluides, des milieux granulaires, des solides, physique statistique, physique du mouillage, micro-fluidique, biophysique,...) l’objectif est donc de ne pas faire un séminaire trop spécialiste : au moins la première moitié du séminaire à un niveau accessible pour celui qui ne connaît rien sur le sujet.

Le séminaire a lieu à 11h. rendez-vous 15 minutes avant pour installer et tester la projection.

Le séminaire dure environ 45 minutes pour laisser un peu de temps pour discuter à la fin.

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Informations Pratiques

Laboratoire : 01 40 79 45 22
Directeur : Philippe Petitjeans
Administratrice : Frédérique Auger (01 40 79 45 22)
Gestionnaire : Claudette Barez (01 40 79 58 53)
Courriel : dir (arobase) pmmh.espci.fr

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