DYMAT is the European association for scientists and engineers working in the fields of materials at high strain rates, their modelling and associated numerical simulation as well as the application of this work. The triennially organized International Conferences are the platform to present the most recent scientific achievements on the thermo-mechanical behaviour of materials under crash, impact and blast loading.
The 12th International DYMAT Conference took place between September 9th and 14th 2018 and was organized by the Commissariat à l’Energie Atomique et aux Energies Alternatives in partnership with the Institute of Mechanics and Engineering of the University of Bordeaux, in Arcachon, France. Specific emphasis was set to four key topics: Modelling and Numerical Simulation, Experimental Techniques, Microstructural Effects and Industrial Application. With authors from 32 countries, the DYMAT international conference has once again demonstrated its influence and international character.
As in previous years, the conference has offered two types of publications. The proceedings of the conference have been collected into an issue of the "European Physical Journal - Web of Conferences" (EPJ-WoC). Alternatively, authors were encouraged to submit their articles to a peer review process in order to publish their work in an issue of the "European Physical Journal - Special Topics" (EPJ-ST), entitled " Advances in the Characterization, Modelling and Simulation of Materials Subjected to Dynamic Loading".
International Advisory Committee
Dr. C. Albertini, retired, Former Head of Large Dynamic Testing Facility, European
Commission, Joint Research Centre, Italy
Emeritus Prof. Dr. R. Armstrong, University of Maryland, USA
Prof. Y. L. Bai, Chinese Academy of Sciences, China
Prof. A.M. Bragov, Research Inst. of Mechanics, State Univ., Russia
Dr. T. Cloete, University of Cape Town, South Africa
Dr. J. A. Epaarachchi, University of Southern Queensland, Australia
Dr. G. T. Gray III, Los Alamos National Laboratory, USA
Prof. B. Lundberg, Uppsala University, Sweden
Prof. M. A. Meyers, University of California San Diego, USA
Prof. A. Molinari, University of Lorraine, Metz, France
Prof. D. Rittel, Faculty of Mechanical Engineering, Israel
Prof. J. Weerheijm, TNO Defence, Security & Safety, Netherlands
Prof. N. Bahlouli, University of Strasbourg, France
Dr. E. Buzaud, CEA, Le Barp, France
Prof. E. Cadoni, SUPSI – University of Applied Sciences of Southern Switzerland, Switzerland
Dr. A. Cosculluela, CEA, Le Barp, France
Dr. H. Couque, Nexter Munitions, Bourges, France
Prof. P. Forquin, University of Grenoble, France
Dr. S. Guérard, Arts et Métiers ParisTech, France
Prof. S. Hiermaier, Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institut, EMI, Germany
Dr. M. Hokka, Tampere University of Technology, Finland
Prof. L. Kruszka, The Jaroslaw Dabrowski Military University of Technology, Warszawa, Poland
Prof. M. Langseth, Norwegian University of Science and Technology, Norway
Prof. F. Galvez, Universidad Politecnica de Madrid, Spain
Prof. E. Markiewicz, University of Valenciennes, France
Prof. L. Peroni, Politecnico di Torino, Italy
Prof. P. Verleysen, Ghent University, Belgium
Dr. S. M. Walley, retired, University of Cambridge, United Kingdom
Commissariat à l’Energie Atomique et aux Energies Alternatives, Centre du CESTA
15 avenue des sablières – CS 60001
33116 Le Barp cedex
Antonio COSCULLUELA, Co-chair of DYMAT 2018
Eric BUZAUD, Co-chair of DYMAT 2018
Laure VACHER, Conference organization
Sandra ESTEVES, Conference organization
Palais des Congrès d’Arcachon
Bd Veyrier Montagnères
Camille GAUTHIER, Conference organization
DYMAT Association Office
PRESIDENT: Ezio CADONI (Switzerland)
VICE-PRESIDENT: Antonio COSCULLUELA (France)
VICE-PRESIDENT PUBLICATION: Hervé COUQUE (France)
VICE-PRESIDENT COMMUNICATION: Stefan HIERMAIER (France)
TREASURER: Eric BUZAUD (France)
SECRETARY: Stephen M. WALLEY (United Kingdom)
VICE-SECRETARY: Nadia BAHLOULI (France)
DYMAT Association Office
CEA Centre de Valduc
21120 Is-sur-Tille (France)
John Rinehart Award
DYMAT 2018 will have the honour of being the fourth DYMAT International Conference to give the John S. Rinehart’s Award. This distinction, established in 1990 to recognize outstanding effort and creative work in the science and technology of dynamic processes in materials, has been awarded every five years on the occasion of several Explomet International Conferences. Since 2009, DYMAT is the Custodian of the Award. A special jury, composed of the members of the DYMAT International Advisory Committee and members of the DYMAT Governing Board, voted and selected two winners. Our sincere congratulations go to Gordon R. Johnson and to George T. (Rusty) Gray III, the two recipients of the John S. Rinehart Award 2018.
Winners of the DYMAT 2018 John Rinehart Award
Gordon R. Johnson
Gordon Johnson is a Program Director at Southwest Research Institute (SwRI) in Minneapolis, MN, USA. He began his career at Honeywell and Alliant Techsystems in 1966, moved to Network Computing Services in 2001 where he was involved with the U.S. Army High Performance Computing Research Center at the University of Minnesota, and then joined SwRI in 2007. He received a BS (1964), MSCE (1966) and PhD (1974) in Civil Engineering and Structures from the University of Minnesota.
He began development of the EPIC (Elastic-Plastic Impact Computations) code in the 1970s and has been the principal developer of this code since then. EPIC is both a research and production code with applications for high-velocity impact and other intense impulsive loading conditions. During the course of his career he has developed numerical algorithms for finite elements, meshless particles, contact and sliding, and automatic conversion of highly distorted elements into meshless particles (which combines the accuracy of finite elements for small distortions and the robustness of meshless particles for large distortions). He has also developed computational constitutive models for metals (Johnson-Cook), concrete (Holmquist-Johnson- Cook), ceramics (Johnson-Holmquist-Beissel), composites (Johnson-Beissel-Cunniff) and glass (Holmquist-Johnson). Some of these models are widely used in the computational community.
He is an author of numerous research publications in the areas of numerical algorithms, computational material models, and applications involving high-velocity impact. He received the H.W. Sweat Engineer-Scientist Award from Honeywell in 1977, the Distinguished Scientist Award from the Hypervelocity Impact Society in 2007, and was given the title of Ballistics Science Fellow by the International Ballistics Society in 2014. A unique and beneficial aspect of his career has been the long-term (16-33 years) working relationships with a team of coworkers, including Stephen Beissel, Charles Gerlach, Timothy Holmquist and Robert Stryk.
George T. (Rusty) Gray III
George T. (Rusty) GRAY III is a Laboratory Fellow and staff member in the dynamic properties and constitutive modelling team within the Materials Science Division of Los Alamos National Laboratory (LANL). He came to LANL following a three-year visiting scholar position at the Technical University of Hamburg-Harburg in Hamburg, Germany having received his PhD in Materials Science in 1981 from Carnegie-Mellon University. As a staff member (1985-1987) and later team leader (1987- 2003) in the Dynamic Materials Properties and Constitutive Modelling Section within the Structure / Property Relations Group (MST-8) at LANL, he has directed a research team working on investigations of the dynamic response of materials.
He conducts fundamental, applied, and focused programmatic research on materials and structures, in particular in response to high-strain-rate and shock deformation. His research is focused on experimental and modelling structure/property studies of defect generation, substructure evolution, mechanical behaviour, and dynamic damage-spallation of materials. These constitutive and damage models are utilized in engineering computer codes to support large-scale finite element modelling simulations of structures ranging from national defence (DOE, DoD, DARPA), industry (GM, Ford, Chrysler, and Bettis), foreign object damage, and manufacturing.
He is a Life Member of Clare Hall, University of Cambridge in the UK where he was on sabbatical in the summer of 1998. He co-chaired the Physical Metallurgy Gordon Conference in 2000. He is a Fellow of the American Physical Society (APS), a Fellow of ASM International(ASM), and a Fellow of the Minerals, Metals, and Materials Society (TMS). He is a member of APS, ASM, TMS, and serves on the International Scientific Advisory Board of the European DYMAT Association. In 2010 he served as the President of the Minerals, Metals, and Materials Society. Starting in 2012 he became the Chair of the Acta Materialia Board of Governors which oversees the publication of the journals Acta Materialia, Scripta Materialia, Acta Biomaterialia, and Materialia. He has authored or co-authored over 440 technical publications. In 2017 he was elected to the United States National Academy of Engineering (NAE).