Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite

We present the results of an experimental campaign conducted on the LULI2000 laser facility. Semi-infinite targets of a commercial grade of porous graphite were submitted to high-power laser irradiation inorder to generate craters. A 15 ns pulse duration was used along with a focal spot diameter of...

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Main Authors: Aubert Bertrand, Hebert David, Rullier Jean-Luc, Chevalier Jean-Marc, Berthe Laurent, Brambrink Erik, Lescoute Emilien, Videau Laurent, Franzkowiak Jean-Eloi, Jodar Benjamin, Loison Didier, Nivard Mariette
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201818301060
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spelling doaj-399921750d3c4f529c728e3f7d7fa5212021-08-02T09:46:46ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011830106010.1051/epjconf/201818301060epjconf_dymat2018_01060Numerical Simulations of Laser-Driven Cratering Experiments into Porous GraphiteAubert BertrandHebert DavidRullier Jean-LucChevalier Jean-MarcBerthe LaurentBrambrink ErikLescoute EmilienVideau LaurentFranzkowiak Jean-EloiJodar BenjaminLoison DidierNivard MarietteWe present the results of an experimental campaign conducted on the LULI2000 laser facility. Semi-infinite targets of a commercial grade of porous graphite were submitted to high-power laser irradiation inorder to generate craters. A 15 ns pulse duration was used along with a focal spot diameter of 900 µm to deliver energies up to 750 J. Numerical simulations of these shots have been performed following a specificmethodology which can be divided in three steps. Firstly, the mechanical loading induced by the laser iscalibrated by simulating the same shot on a thin aluminum target of which free surface velocity is measured byPDV and line-VISAR. Secondly, the same shot is performed on a thin graphite target to validate the materialmodel of graphite. Thirdly, the craterization shot on semi-infinite target is simulated. Numerical results arecompared to experimental measurements of craters obtained using an interferometric profilometer.https://doi.org/10.1051/epjconf/201818301060
collection DOAJ
language English
format Article
sources DOAJ
author Aubert Bertrand
Hebert David
Rullier Jean-Luc
Chevalier Jean-Marc
Berthe Laurent
Brambrink Erik
Lescoute Emilien
Videau Laurent
Franzkowiak Jean-Eloi
Jodar Benjamin
Loison Didier
Nivard Mariette
spellingShingle Aubert Bertrand
Hebert David
Rullier Jean-Luc
Chevalier Jean-Marc
Berthe Laurent
Brambrink Erik
Lescoute Emilien
Videau Laurent
Franzkowiak Jean-Eloi
Jodar Benjamin
Loison Didier
Nivard Mariette
Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
EPJ Web of Conferences
author_facet Aubert Bertrand
Hebert David
Rullier Jean-Luc
Chevalier Jean-Marc
Berthe Laurent
Brambrink Erik
Lescoute Emilien
Videau Laurent
Franzkowiak Jean-Eloi
Jodar Benjamin
Loison Didier
Nivard Mariette
author_sort Aubert Bertrand
title Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
title_short Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
title_full Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
title_fullStr Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
title_full_unstemmed Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
title_sort numerical simulations of laser-driven cratering experiments into porous graphite
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2018-01-01
description We present the results of an experimental campaign conducted on the LULI2000 laser facility. Semi-infinite targets of a commercial grade of porous graphite were submitted to high-power laser irradiation inorder to generate craters. A 15 ns pulse duration was used along with a focal spot diameter of 900 µm to deliver energies up to 750 J. Numerical simulations of these shots have been performed following a specificmethodology which can be divided in three steps. Firstly, the mechanical loading induced by the laser iscalibrated by simulating the same shot on a thin aluminum target of which free surface velocity is measured byPDV and line-VISAR. Secondly, the same shot is performed on a thin graphite target to validate the materialmodel of graphite. Thirdly, the craterization shot on semi-infinite target is simulated. Numerical results arecompared to experimental measurements of craters obtained using an interferometric profilometer.
url https://doi.org/10.1051/epjconf/201818301060
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