Computational material modeling has a history supporting of engineering applications. This dissertation presents two focal areas of
research. The first is modeling and characterizing ultrafast laser machining of sapphire. A three dimensional model of laser machining is
presented as an extension to a previously published one dimensional model. The bulk of the work focuses on finite element modeling of
nanoindetation of laser machined and pristine sapphire specimen in order to quantify material differences due to laser machining. Discussions on
generalized plasticity and finite element modeling are including before presenting results, As the second focal point, this dissertation
presents applications of network theory to atomistic material models. A novel method of representing materials as weighted graphs is developed.
We believe this approach extends the use of networks beyond their traditional use in chemistry. Within the weighted network approach we show
that spectral sparsification is an excellent tool that reduces complex force interactions while maintaining minimal errors. The results are
shown to be particularly useful for approximating long range potentials. We also present preliminary work which suggest the network based
approach may be suitable for detecting defects and developing macroscale consitutive laws. / A Dissertation submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements
for the degree of Doctorate of Philosophy. / Fall Semester 2018. / November 13, 2018. / finite element, high temperature materials, molecular dynamics, multiscale modeling, sensing / Includes bibliographical references. / William Oates, Professor Directing Thesis; Kyle Gallivan, University Representative; Kunihiko Taira,
Committee Member; Shangchao Lin, Committee Member; Jose Mendoza-Cortes, Committee Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_661184 |
| Contributors | Woerner, Peter Christopher (author), Oates, William (professor directing thesis), Gallivan, Kyle A., 1958- (university representative), Taira, Kunihiko (committee member), Lin, Shangchao (committee member), Mendoza-Cortes, Jose L. (committee member), Florida State University (degree granting institution), FAMU-FSU College of Engineering (degree granting college), Department of Mechanical Engineering (degree granting departmentdgg) |
| Publisher | Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text, doctoral thesis |
| Format | 1 online resource (76 pages), computer, application/pdf |
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