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 20 of 36 for “"mechanical modeling"”.
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Statistical mechanical modeling of eukaryotic gene regulation
Gene expression patterns are regulated by gene regulatory networks. Central to transcriptional regulation of gene expression is the regulation of the quantities of transcription factors (TFs) bound to genomic regulatory sequences. This thesis work is built on statistical mechanics to study the …
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Mechanical modeling of vestibular hair cell bundles
… in the inner ear of vertebrates. They convert a mechanical signal, detected by the deflection of a bundle of cilia extending from their top surface, into an electrochemical signal. This dissertation studies the mechanical influence of the structure and materials on the function of the cells. I …
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Indentation analysis and mechanical modeling of multilayered composites
… study was undertaken to investigate the mechanical properties of metal-ceramic nanolayered composites. The model system features alternating thin films of aluminum (Al) and silicon carbide (SiC). Finite element modeling was employed to analyze the nanoindentation and microcompression …
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Fire Hazard Assessment for Highway Bridges with Thermal Mechanical Modeling
… and the simulation of bridge superstructure mechanical response was created. The simulation was used to perform a parametric study of fire size and location to investigate the relationship between these parameters and damage tot bridge super-""structure. The statistics investigation resulted …
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Thermo-mechanical modeling of a micro-fabricated solid oxide fuel cell
A micro-fabricated solid oxide fuel cell is currently being designed by the Micro-chemical Power Team(funded under the Multidisciplinary University Research Initiative(MURI) Research Program). In the current design a plate structure vital to power generation is exposed to harsh thermal operation …
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Mathematical and mechanical modeling of vaso-occlusion in sickle cell disease
Vaso-occlusive crises cause most of the morbidity and mortality associated with sickle cell disease. The proximal causes of these occlusive events are not well understood. The risks and consequences of vaso-occlusion however are clear. Ten percent of sickle cell disease patients will have a stroke …
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Life prediction of fiber-reinforced composites: macro- and micro-mechanical modeling
… common approaches of which are, macro- and micro-mechanical modeling. The former assumes homogeneity at the lamina level while the latter evaluates failure processes at the fiber-matrix level. In the first part of this study the remaining strength life prediction methodology MRLife, modified for …
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Holistic electrochemical and mechanical modeling of corrosion-induced cracking in concrete structures
Thesis (Ph. D.)--Michigan State University. Dept. of Civil Engineering, 2010
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Ductile fracture at intermediate stress triaxialities : experimental investigations and micro-mechanical modeling
… and phenomenological as well as micro-mechanical modeling of the onset of fracture. Based on an extensive multi-axial experimental program, the anisotropic plasticity of the present material is described by a non-associated quadratic anisotropic model. Comparison of model predictions to …
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Mechanical modeling of tissue response during early stage entubulated peripheral nerve regeneration
… the first two weeks post-transection. A new mechanical model is presented to describe the mechanical attenuation of myofibroblast forces by a nerve conduit, and a novel kinetic model is presented to describe the effects of fibrin clot formation, nerve tissue formation, and contractile capsule …
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Comparison of oil and intensive quenching via coupled thermal, transformation, and mechanical modeling
A series of simulations were performed on a 25.4 mm (1 in) diameter 254 mm (10 in) long cylindrical bar. These simulations included three carburization levels: non-carburized, carburized to 0.8 wt pct C and 1.0 wt pct C at the surface utilizing a plain carbon steel (1020) and three alloy steels …
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Geo-chemo-mechanical modeling of sedimentary rocks: application to unconventional reservoirs and geological CO2 sequestration
… the effect of fabric and mineralogy on the mechanical behavior of organic-rich shales becomes of critical importance for petroleum engineers. Similarly, the effect of geochemical alterations in geomechanical behavior becomes of critical importance for storage of CO2 in deep saline …
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Three-dimensional thermo-mechanical modeling of deformation at plate boundaries : case study San Andreas Fault System
… two end-member concepts requires a 3D thermomechanical numerical modeling. However, the software tool required for such modeling is not available at present in the geodynamic modeling community. The major aim of the presented work is comprised basically of two interconnected tasks. The first …
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The Effect of Stress State and Precipitation on Stress-Induced Martensitic Transformations in Polycrystalline and Single Crystal Shape Memory Alloys: Experiments and Micro-Mechanical Modeling
… in aged NiTi single crystals, a micro-mechanical model is used to quantify the stress fields outside perfectly coherent Ti$\sb{11}$Ni$\sb{14}$ precipitates in NiTi. Using the model, the decrease in the orientation dependence of $\sigma\sb{\rm cr}$ is linked to the unique orientation …
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Development of Functional Polymeric Materials for Microfluidic Systems
… been understood through systematic studies and mechanical modeling. In conclusion, the introduction of functional polymeric materials into microfluidics via direct photopolymerization has the potential to greatly simplify microfluidic fabrication processes, and to expand the application of …
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Atomistic simulations of chemomechanical processes in nanomaterials under extreme environments
The complex chemomechanical behavior of nanomaterials under extreme thermal and mechanical environments is of interest for a range of basic science and defense applications. By the limitation of experimental approaches for objects of nanometer, novel computational methods have been developed to …
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Thermomechanical effects of ground-based directed energy weapons on satellites and Intercontinental Ballistic Missiles
Thermo mechanical modeling and simulation of a satellite and intercontinental ballistic missile assumes importance due to the increased interest in assessing the potential of such attacks. Effective and innovative methods are sought in assessing the structural integrity of such structural …
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