A Computational Library for Determining the Mechanical Properties of Crystals and Polycrystalline Aggregates

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dc.contributor.advisorCastagna, John P.
dc.contributor.committeeMemberChesnokov, Evgeni M.
dc.contributor.committeeMemberSmith, Tad
dc.creatorTorlucci, Anthony 1983-
dc.date.accessioned2019-09-10T15:38:08Z
dc.date.createdDecember 2018
dc.date.issued2018-12
dc.date.submittedDecember 2018
dc.date.updated2019-09-10T15:38:09Z
dc.description.abstractComputer modeling of the basic equations of solid mechanics is simplified with a well designed computational library. The weighted arithmetic average and weighted harmonic average are abstract forms of the more concrete upper and lower bounds for the effective elastic moduli of fluid mixtures and solid composites. More rigorous upper and lower bounds for the effective isotropic elastic coefficients of an anisotropic crystal are calculated from the two linear fourth rank tensor invariants. Rock physics transform functions for isotropic homogeneous materials can be used to calculate the compressional wave velocity and shear wave velocity from the mean value of the upper and lower bounds yielding a spherical surface in the three dimensional phase velocity space. The behavior of the velocity surface for a given anisotropic tensor, however, is not easily recognized in the analytical form of the Green-Christoffel equation. The phase-velocity surface for a single crystal deviates from the isotropic velocity due to the inherent nature of the crystal being anisotropic. The amount of deviation and curvature of the surface depends on the symmetry and the values of the stiffness tensor. A generic library of data structures and algorithms makes visualizing and interpreting these results simpler.
dc.description.departmentEarth and Atmospheric Sciences, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10657/4421
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectSolid mechanics
dc.titleA Computational Library for Determining the Mechanical Properties of Crystals and Polycrystalline Aggregates
dc.type.dcmiText
dc.type.genreThesis
local.embargo.lift2020-12-01
local.embargo.terms2020-12-01
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentEarth and Atmospheric Sciences, Department of
thesis.degree.disciplineGeophysics
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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