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 10 of 10 for “"computational micromechanics"”.
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Computational Micromechanics Analysis of Deformation and Damage Sensing in Carbon Nanotube Based Nanocomposites
… response through finite elements based computational micromechanics techniques. The evolution of nanoscale conductive electron hopping pathways which leads to nanocomposite piezoresistivity is studied in detail along with its evolution under applied deformations. The nanoscale …
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Experimental and Computational Micromechanics of Aluminum Cerium Alloys and Selective Laser Melted 316L Stainless Steel
… dissertation will discuss the experimental and computational micromechanics of extruded and cast aluminum cerium alloys and selective laser melted 316L stainless steel. In Chapters 2 and 3, micromechanical experiments and computational efforts are carried out on extruded 52:1 Al-8Ce-10Mg alloy. …
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Analytical and Computational Micromechanics Analysis of the Effects of Interphase Regions, Orientation, and Clustering on the Effective Coefficient of Thermal Expansion of Carbon Nanotube-Polymer Nanocomposites
Analytic and computational micromechanics techniques based on the composite cylinders method and the finite element method, respectively, have been used to determine the effective coefficient of thermal expansion (CTE) of carbon nanotube-epoxy nanocomposites containing aligned nanotubes. Both …
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Multiscale Modeling of CNT-Polymer Nanocomposites and Fuzzy Fiber Reinforced Polymer Composites for Strain and Damage Sensing
… of the CNT-polymer nanocomposites by using computational micromechanics techniques based on finite element analysis. The in-plane, axial, the three dimensional piezoresistive responses of the CNT-polymer nanocomposites are studied by using 2D, axisymmetric, and 3D electromechanically coupled …
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Investigative Application of the Intrinsic Extended Finite Element Method for the Computational Characterization of Composite Materials
Computational micromechanics analysis of carbon nanotube-epoxy nanocomposites, containing aligned nanotubes, is performed using the mesh independent intrinsic extended finite element method (IXFEM). The IXFEM employs a localized intrinsic enrichment strategy to treat arbitrary discontinuities …
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Mechanics and Durability of Fiber Reinforced Porous Ceramic Composites
… Based on the average field formalism, a computational micromechanics approach was developed to estimate the effective elastic properties of a highly porous material with random microstructure. A meso-level analytical model based on the energy principles was developed to estimate the …
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Mechanical Property Characterization of Polymeric Composites Reinforced by Continuous Microfibers
… time consuming and cost prohibitive. Advances in computational micromechanics allow us to study the various polymer based composites by using finite element simulations. The mechanical properties of continuous fiber composite strands are directional. In traditional continuous fiber laminated …
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Multiscale Modeling of the Effects of Nanoscale Load Transfer on the Effective Elastic Properties of Carbon Nanotube-Polymer Nanocomposites
… in continuum level models using analytic and computational micromechanics approaches, allowing for the assessment of the improvement in reinforcement efficiency of CNTs due to the functionalization. It is found that the inclusion of the nanoscale interface in place of the perfectly bonded …
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Micromecánica de elastómeros porosos y reforzados con fibras
… complex microstructures have appeared recently. Computational micromechanics is a different strategy to determine the macroscopic response of composite materials from the numerical simulation of the effective properties of a representative volume element of the microstructure, whose size is large …
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Investigating the Thermo-Mechanical Behavior of Highly Porous Ultra-High Temperature Ceramics using a Multiscale Quasi-Static Material Point Method
… samples. As such, this dissertation seeks to computationally characterize the thermomechanical properties of multiscale porous UHTCs, specifically titanium diboride, and validate those results against experimental results so as to build confidence in the model. An implicit quasi-static variant …