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Towards mechanism-based simulation of impact damage using exascale computing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationSHOCK COMPRESSION OF CONDENSED MATTER
Subtitle of host publication2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
Publisher or commissioning bodyAmerican Institute of Physics (AIP)
Number of pages4
ISBN (Print)9780735414570
DOIs
DateAccepted/In press - 15 Aug 2015
DatePublished (current) - 13 Jan 2017

Publication series

NameAIP Conference Processings
PublisherAIP Publishing LLC
Number1
Volume1793

Abstract

Over the past 60 years, the finite element method has been very successful in modelling deformation in engineering structures. However the method requires the definition of constitutive models that represent the response of the material to applied loads. There are two issues. Firstly, the models are often difficult to define. Secondly, there is often no physical connection between the models and the mechanisms that accommodate deformation. In this paper, we present a potentially disruptive two-level strategy which couples the finite element method at the macroscale with cellular automata at the mesoscale. The cellular automata are used to simulate mechanisms, such as crack propagation. The stress-strain relationship emerges as a continuum mechanics scale interpretation of changes at the micro- and meso-scales. Iterative two-way updating between the cellular automata and finite elements drives the simulation forward as the material undergoes progressive damage at high strain rates. The strategy is particularly attractive on large-scale computing platforms as both methods scale well on tens of thousands of CPUs.

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via AIP at http://aip.scitation.org/doi/abs/10.1063/1.4971615. Please refer to any applicable terms of use of the publisher.

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