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Efficient Extended Finite Element Algorithms for Strongly and Weakly Discontinuous Entities with Complex Internal Geometries

Abstract The objective of this research is to develop robust, accurate, and adaptive algorithms in the framework of the extended finite element method (XFEM) for fracture analysis of highly heterogeneous materials with complex internal geometries. A key contribution of this work is the creation of novel methods designed to automate the incorporation of high-resolution data, e.g. from X-ray tomography, that can be used to better interpret the enormous volume of data generated in modern in-situ experimental testing. Thus new algorithms were developed for automating analysis of complex microstructures characterized by segmented tomographic images.

A centrality-based geometry segmentation algorithm was developed to accurately identify discrete inclusio... (more)
Created Date 2015
Contributor Yuan, Rui (Author) / Oswald, Jay (Advisor) / Chawla, Nikhilesh (Committee member) / Liu, Yongming (Committee member) / Solanki, Kiran (Committee member) / Chen, Kangping (Committee member) / Arizona State University (Publisher)
Subject Mechanical engineering / Mechanics / Composite material / Computational solid mechanics / Extended finite element / Fracture / Geometry representation / Geometry segmentation
Type Doctoral Dissertation
Extent 104 pages
Language English
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Aerospace Engineering 2015
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis