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dc.contributor.advisorGiraldo-Londono, Olivereng
dc.contributor.authorMuneton Lopez, Rogelio Andreseng
dc.date.embargountil8/1/2024
dc.date.issued2023eng
dc.date.submitted2023 Summereng
dc.description.abstract[EMBARGOED UNTIL 8/1/2024] This thesis focuses on the development and application of the phase-field method for fracture modeling of brittle, quasi-brittle, and viscoelastic materials. The study begins with a comprehensive review of the existing theories and approaches proposed by numerous researchers in the field through the years. Subsequently, this study presents the anisotropic phase-field formulation for brittle fracture introduced by Miehe et al. [7, 8], highlighting important concepts and introducing the monolithic and staggered approaches. Building upon this foundation, a new phase-field formulation for quasi-brittle fracture -the regularized PPR model, is introduced, using the Park-Paulino-Roesler (PPR) cohesive fracture model [9]. This new formulation employs a hybrid approach to solve for the displacement problem and the phase-field problem. The regularized PPR model allows for modeling complex crack topologies and capturing size and boundary effects accurately. To extend the model's applicability to viscoelastic materials, a thermo-viscoelastic phase-field formulation is introduced, addressing the rate- and temperature-dependent behavior of such materials. The formulations presented in the different chapters are validated through numerical examples, demonstrating their effectiveness in capturing different fracture phenomena and material responses. Overall, this thesis makes several contributions to the field of fracture mechanics presenting two new phase-field models for fracture modeling of quasi-brittle and viscoelastic materials. This research contributes to advancing the understanding and prediction of fracture in a wide range of materials.eng
dc.description.bibrefIncludes bibliographical references.eng
dc.format.extentxxiii, 141 pages : illustrations (color)eng
dc.identifier.urihttps://hdl.handle.net/10355/97089
dc.identifier.urihttps://doi.org/10.32469/10355/97089eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.titleA phase-field formulation for fracture modeling of quasi-brittle and rate- and temperature-dependent materialseng
dc.typeThesiseng
thesis.degree.disciplineCivil Engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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