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An Ellipsoidal Particle-Finite Element Method for Hypervelocity Impact SimulationA 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 particles entropies serving as generalized coordinates, avoids the angular momentum conservation problems which have been reported with ellipsoidal smooth particle hydrodynamics models.
Document ID
20040191573
Acquisition Source
Headquarters
Document Type
Other
Authors
Shivarama, Ravishankar (Texas Univ. Austin, TX, United States)
Fahrenthold, Eric P. (Texas Univ. Austin, TX, United States)
Date Acquired
September 7, 2013
Publication Date
November 8, 2004
Publication Information
Publication: Hybrid Particle-Element Simulation of Impact on Composite Orbital Debris Shields
Subject Category
Numerical Analysis
Funding Number(s)
CONTRACT_GRANT: 003658-0709-1999
CONTRACT_GRANT: NAG9-1244
CONTRACT_GRANT: NSF CMS-99-12475
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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