Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Damage and fracture"”.
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Strain gradient plasticity-based modeling of damage and fracture
… theories relate the plastic work to both strains and strain gradients, introducing a length scale in the constitutive equations. While growing interest in micro-technology motivated at first the development of SGP models, the influence of GNDs goes beyond micron-scale applications, as strains vary …
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Understanding and modelling damage and fracture in nuclear grade graphite
This thesis studied the crack initiation and propagation characteristics of Nuclear Block Graphite 10 (NBG10) and Gilsocarbon (IM1-24), using the DoubleTorsion (DT) technique.
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Extension of the peridynamic theory of solids for the simulation of materials under extreme loadings
… including protection materials, impact damage in turbine engines and high velocity impact in space, remains one of the key challenges in the field of computational mechanics. Despite significant advances, a fully robust and generally applicable computational framework for simulating the …
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Peridynamic constitutive model for concrete
… the classical theory, the concepts of stress and strain are not needed in peridynamics. The original bond-based peridynamic theory has several drawbacks including being limited to modeling materials with Poissons ratio of one-quarter. In 2007, Silling generalized his model by introducing …
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Coupled deformation-diffusion-fracture theories for solids : application to polymeric gels and hydrogen embrittlement in steels
… ubiquitous in engineering applications. Understanding and modeling the fracture of such solids is vitally important. This thesis addresses the theoretical formulation, numerical implementation, and application of fully-coupled deformation-diffusion-damage theories for two different classes of …
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Investigating the Evolution of Rock Discontinuity Asperity Degradation and Void Space Morphology under Direct Shear
… represent planes of relative weakness and enhanced hydraulic conductivity and, thus, have a substantial influence on the hydro-mechanical behaviour of the overall rock mass. While the shearing of rock mass discontinuities has been extensively studied in the past, there remains …
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On the role of topology and micro-structure on the adhesion and fracture of soft materials
… recent progress in characterization, synthesis and manufacturing techniques, soft materials are playing an increasingly important role in many emerging technologies in different fields, such as biomedical, industrial, and electric engineering fields. In many of these applications, the …
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Numerical Methods for Fluid-Solid Coupled Simulations: Robin Interface Conditions and Shock-Dominated Applications
… for coupling computational fluid dynamics (CFD) and computational solid dynamics (CSD) solvers, and the use of these solvers for simulating fluid-solid interaction (FSI) problems involving large deformation, shock waves, and multiphase flow. The dissertation consists of two parts. The first part …