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Granular element method for computational particle mechanics

Andrade, José E. and Lim, Keng-Wit and Avila, Carlos F. and Vlahinić, Ivan (2012) Granular element method for computational particle mechanics. Computer Methods in Applied Mechanics and Engineering, 241-244 . pp. 262-274. ISSN 0045-7825. doi:10.1016/j.cma.2012.06.012.

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This paper presents a method within the family of the discrete element method (DEM) capable of accurately capturing grain shape by using Non-Uniform Rational Basis-Splines (NURBS). The new method, called GEM, bypasses one of the current bottlenecks in computational discrete mechanics of granular materials by allowing discrete elements to take realistic and complex granular shapes encountered in engineering and science (e.g., sand grains). More than a new method, this paper presents a new concept for DEM: using NURBS to seamlessly transition from advanced visualization tools (e.g., X-ray CT) to physics-based computational models where particle shape is realistically modeled. It is expected that, with the rapid advancement of computational power, combining high-fidelity characterization with physics-based computations will lead to more predictive modeling approaches. The granular element method may help transition from characterization to modeling and could lead to more realistic predictions at the grain scale.

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Additional Information:© 2012 Elsevier B.V. Received 14 January 2012. Received in revised form 12 June 2012. Accepted 16 June 2012. Available online 28 June 2012. This work is partially supported by NSF CAREER Grant No.1060087 and AFOSR YIP Grant No. FA9550-11-1-0052 to the California Institute of Technology. This support is gratefully acknowledged.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)/YIPFA9550-11-1-0052
Subject Keywords:Discrete element method; Particle mechanics; NURBS; Multiscale analysis
Record Number:CaltechAUTHORS:20121018-111644740
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Official Citation:José E. Andrade, Keng-Wit Lim, Carlos F. Avila, Ivan Vlahinić, Granular element method for computational particle mechanics, Computer Methods in Applied Mechanics and Engineering, Volumes 241–244, 1 October 2012, Pages 262-274, ISSN 0045-7825, 10.1016/j.cma.2012.06.012. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34974
Deposited By: Ruth Sustaita
Deposited On:18 Oct 2012 18:35
Last Modified:09 Nov 2021 23:11

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