Title:
Numerical Simulation of the Shock Compression of Microscale Reactive Particle Systems

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dc.contributor.advisor McDowell, David L.
dc.contributor.author Austin, Ryan A. en_US
dc.contributor.committeeMember Thadhani, Naresh N.
dc.contributor.committeeMember Zhou, Min
dc.contributor.department Mechanical Engineering en_US
dc.date.accessioned 2005-09-16T15:07:46Z
dc.date.available 2005-09-16T15:07:46Z
dc.date.issued 2005-07-18 en_US
dc.description.abstract The shock compression of Reactive Particle Metal Mixtures (RPMMs) is studied at the microscale by direct numerical simulation. Mixture microstructures are rendered explicitly, providing spatial resolution of the coupled thermal, mechanical, and chemical responses at the particle level during shock compression. A polymer-bonded aluminum-iron oxide thermite system is the focus of this work; however, the computational methods developed here may be extended to other reactive particle systems. Shock waves are propagated through the mixtures in finite element simulations, where Eulerian formulations are used to handle the highly-dynamic nature of particulate shock compression. Thermo-mechano-chemical responses are computed for a set of mixture classes (20% and 50% epoxy content by weight) subjected to a range of dynamic loading conditions (particle velocities ranging from 0.300??00 km/s). Two critical sub-problems are addressed: (i) the calculation of Hugoniot data for variable mixture compositions and (ii) the prediction of sites that experience microscale reaction initiation. Hugoniot calculations are in excellent agreement with experimental data. Microscale reaction initiation sites are predicted in certain load cases for each mixture class, although such predictions cannot currently be validated by experimental methods. en_US
dc.description.degree M.S. en_US
dc.format.extent 18500958 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/7182
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Shock compression en_US
dc.subject Particle systems
dc.subject Finite element method
dc.subject Eulerian formulations
dc.subject Hugoniot
dc.subject Reaction initiation
dc.title Numerical Simulation of the Shock Compression of Microscale Reactive Particle Systems en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor McDowell, David L.
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication ce593c62-37f0-4d6f-a241-a83c373faa3e
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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