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Simulation of laser-driven cratering experiments on aluminum

Type
Articles dans des revues avec comité de lecture
Auteur
AUBERT, Bertrand
550115 CEA-CESTA (Le Barp, Gironde)
HEBERT, David
550115 CEA-CESTA (Le Barp, Gironde)
RULLIER, Jean-Luc
550115 CEA-CESTA (Le Barp, Gironde)
LESCOUTE, Emilien
VIDEAU, Laurent
BERTHE, Laurent
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/19450
DOI
10.2351/1.5086736
Date
2019
Journal
Journal of Laser Applications

Résumé

After a brief description of the physical principles involved in the cratering process, the authors present a specific methodology to simulate laser-driven cratering experiments performed with a long pulse duration (100 ns) and a small focal spot diameter (220 μ m). This methodology can be divided into two steps. First, the 2D-axisymmetrical pressure field generated by the laser on the target is determined from laser parameters. Second, this pressure is applied on the surface of the target in a Eulerian simulation. In order to validate this methodology, the authors simulate a laser shot on a thin aluminum target whose rear surface velocity is recorded by a VISAR (Velocity Interferometer System for Any Reflector). Once validated, they use the methodology to simulate laser-driven cratering experiments on semi-infinite aluminum targets. Numerical results are compared to experimental measurements of the craters. Although slight differences are pointed out and discussed, the proposed methodology is well adapted to simulate craterization laser shots.

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PIMM_JLA_2019_BERTHE2.pdf
Taille:
2.121Mo
Format:
PDF
Description:
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Documents liés

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  • Numerical study of laser ablation on aluminum for shock-wave applications: development of a suitable model by comparison with recent experiments 
    BARDY, Simon; AUBERT, Bertrand; BERTHE, Laurent; COMBIS, Patrick; HEBERT, David; LESCOUTE, Emilien; RULLIER, Jean-Luc; VIDEAU, Laurent (2017)
    In order to control laser-induced shock processes, two main points of interest must be fully understood: the laser–matter interaction generating a pressure loading from a given laser intensity profile and the propagation ...
  • Hypervelocity impacts into porous graphite: Experiments and simulations 
    HÉBERT, David; SEISSON, Gabriel; RULLIER, Jean-Luc; BERTRON, Isabelle; HALLO, Ludovic; CHEVALIER, Jean Marc; THESSIEUX, C.; GUILLET, Francois; BOUSTIE, Michel; BERTHE, Laurent (Royal Society of London, 2017)
    We present experiments and numerical simulations of hypervelocity impacts of 0.5mm steel spheres into graphite, for velocities ranging between 1100 and 4500ms?1. Experiments have evidenced that, after a particular striking ...
  • Dynamic cratering of graphite: Experimental results and simulations 
    HEBERT, David; BERTRON, I; CHEVALIER, J.M; HALLO, L; LESCOUTE, Emilien; VIDEAU, Laurent; COMBIS, Patrick; GUILLET, F; BERTHE, Laurent; SEISSON, G.; BOUSTIE, Michel (ELSEVIER, 2013)
    The cratering process in brittle materials under hypervelocity impact (HVI) is of major relevance for debris shielding in spacecraft or high-power laser applications. Amongst other materials, carbon is of particular interest ...
  • Dynamic cratering of graphite : experimental results and simulations 
    SEISSON, G; HEBERT, David; BERTRON, I; CHEVALIER, J.M; HALLO, L; LESCOUTE, Emilien; VIDEAU, Laurent; COMBIS, Patrick; GUILLET, F; BOUSTIE, Michel; BERTHE, Laurent (ELSEVIER, 2013)
    The cratering process in brittle materials under hypervelocity impact (HVI) is of major relevance for debris shielding in spacecraft or high-power laser applications. Amongst other materials, carbon is of particular interest ...
  • Dynamic fragmentation of graphite under laser-driven shocks: Identification of four damage regimes 
    SEISSON, Gabriel; PRUDHOMME, Gabriel; FRUGIER, Pierre Antoine; HÉBERT, David; LESCOUTE, Emilien; SOLLIER, Arnaud; VIDEAU, Laurent; MERCIER, Patrick; BOUSTIE, Michel; BERTHE, Laurent (Elsevier Ltd, 2016)
    This study presents the results of a large experimental campaign conducted on the Luli2000 laser facility. Thin targets of a commercial grade of porous graphite were submitted to high-power laser-driven shocks leading to ...

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