NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A Kernel-Free Particle-Finite Element Method for Hypervelocity Impact SimulationAn improved hybrid particle-finite element method has been developed for the simulation of hypervelocity impact problems. Unlike alternative methods, the revised formulation computes the density without reference to any kernel or interpolation functions, for either the density or the rate of dilatation. This simplifies the state space model and leads to a significant reduction in computational cost. The improved method introduces internal energy variables as generalized coordinates in a new formulation of the thermomechanical Lagrange equations. Example problems show good agreement with exact solutions in one dimension and good agreement with experimental data in a three dimensional simulation.
Document ID
20040191568
Acquisition Source
Headquarters
Document Type
Other
Authors
Park, Young-Keun (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.

Related Records

IDRelationTitle20040191566Collected WorksHybrid Particle-Element Simulation of Impact on Composite Orbital Debris Shields
No Preview Available