An ellipsoidal particle-finite element method for hypervelocity impact simulation

A number of coupled particle–element and hybrid particle–element methods have been developed for the simulation of hypervelocity impact problems to avoid certain disadvantages associated with the use of pure continuum‐based or pure particle‐based methods. To date these methods have employed spherica...

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Bibliographic Details
Published in:International journal for numerical methods in engineering 2004-02, Vol.59 (5), p.737-753
Main Authors: Shivarama, Ravishankar, Fahrenthold, Eric P.
Format: Article
Language:English
Subjects:
finite element methods
impact simulation
particle methods
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Summary:A number of coupled particle–element and hybrid particle–element methods have been developed for the simulation of hypervelocity impact problems to avoid certain disadvantages associated with the use of pure continuum‐based or pure particle‐based methods. To date these methods have employed spherical particles. In recent work a hybrid formulation has been extended to the ellipsoidal particle case. A model formulation approach based on Lagrange's equations, with particle entropies serving as generalized coordinates, avoids the angular momentum conservation problems which have been reported with ellipsoidal smooth particle hydrodynamics models. Copyright © 2003 John Wiley & Sons, Ltd.
ISSN:0029-5981
1097-0207
DOI:10.1002/nme.903