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Packing Density Insensitive Contact Detection Algorithm for Molecular Dynamics Simulations

[+] Author Affiliations
A. Munjiza

Queen Mary, University of London, London, UK

Paper No. ESDA2008-59100, pp. 225-229; 5 pages
doi:10.1115/ESDA2008-59100
From:
  • ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 2: Automotive Systems; Bioengineering and Biomedical Technology; Computational Mechanics; Controls; Dynamical Systems
  • Haifa, Israel, July 7–9, 2008
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4836-4 | eISBN: 0-7918-3827-7
  • Copyright © 2008 by ASME

abstract

Molecular dynamics problems involve large numbers of interacting atoms requiring CPU and RAM intensive computational simulations. A contact detection algorithm which detects pairs of interacting atoms is a key component of these simulations. This paper presents a contact detection algorithm that is completely insensitive to packing density in terms of both RAM and CPU requirements — thus permitting near vacuum conditions and dense gases or liquids to coexist in the same simulation. In addition, both CPU and RAM requirements are proportional to the total number of atoms.

Copyright © 2008 by ASME

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