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 28 for “"Structural geometry"”.
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Methods for the integrated design of viscoelastic materials and structural geometry
… the system-level performance-driven design of structural geometry and viscoelastic material properties. By relaxing unnecessary assumptions and optimizing system-level performance by searching the rich spectrum of possible design options throughout the combined structural and material design …
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Structural geometry of the frontal Ouachitas-Arkoma basin transition zone in Western Arkansas
… of Oklahoma; however, few studies document the geometry of Ouachita-Arkoma transition zone in Arkansas. This study uses depth-converted 2-D seismic reflection profiles and well log data to clarify the subsurface structure and establish the presence or lack of triangle zone elements within the …
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Stratigraphy and Structural Geometry at the Leading Edge of the Montana Thrust Belt, East of Sun River Canyon, Lewis and Clark and Teton Counties, Montana
… edge of mountain thrust-belts. Triangle zone geometry is well documented in a series of structures that stretch approximately 900 kilometers, from northeast British Columbia into southwest Alberta, Canada. Triangle zones provide the structural traps that contain hydrocarbon (oil and gas) …
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Stratigraphy and Structural Geometry at the Leading Edge of the Montana Thrust Belt, East of Sun River Canyon, Lewis and Clark and Teton Counties, Montana
… edge of mountain thrust-belts. Triangle zone geometry is well documented in a series of structures that stretch approximately 900 kilometers, from northeast British Columbia into southwest Alberta, Canada. Triangle zones provide the structural traps that contain hydrocarbon (oil and gas) …
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Land Material Geometry: Spline Construction with Invasive Species in a time of Water Crisis in the Colorado River Basin
… allows for a low tech means to approximate structural geometry for adobe construction.
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Subsurface structural geology of the eastern part of the Büyük Menderes Graben, western Turkey: implications for structural evolution of the Büyük Menderes and Alasehir Grabens
… log data from one well are used to delineate the geometry of the subsurface structural features and the Cenozoic stratigraphy of the eastern part of the BMG. Depth converted seismic profiles indicate ~2100 meters (m) thickness of Early Miocene to recent sedimentary rock units in the BMG. The …
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Tensile Fracture Mechanisms of Ferritic/martensitic Structural Materials
… This method is called the Universal Micro-structural Geometry-corrected Model (UMGM) in this dissertation. Due to the development of tri-axial stress and severe distortion of grain structure in the necking region, it is a challenge to determine the true strain/stress curve, a critical input …
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A Structural Approach to Multi-User Detection
… and joint detection in the sense that the structural geometry of the signal constellation is used to derive more efficient detection algorithms. We have also considered the case where the combined multi-user signal is passed through a known memoryless non-linearity, e.g., the RF amplifier …
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Additively Manufactured Bioinspired Microstructures for Active Surface Modification
… directional droplet motion controlled by structural geometry and arrangement. The reversed wetting trend compared with natural wings revealed key insights into the structure–performance relationship. Next, microstructures were integrated with dielectric elastomer actuators (DEAs) to …
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Boundary conditioning concept applied to the synthesis of microsystems using fuzzy logic approach
… of fabrication and other limitations due to structural configuration and environment on dynamic behavior of microsystems. Towards the success of fabrication synthesis, micromechanical components are fabricated through an industrial CMOS process, namely, the Mitel 1.5 om …
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Designing Amphiphilic Peptoids for Controlling the Formation of Nanostructured Biomimetic Materials
… interactions can be tailored to control structural geometry and handedness. Second, we establish how the assembly of amphiphilic peptoids with anisotropic hydrophobic domains can control morphologies between nanosheets, nanotubes, and nanohelices, developing mechanistic insights into …
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Guided modes and resonant transmission in periodic structures
… and we establish sufficient conditions involving structural symmetry that guarantee that the transmission coefficient reach 0% and 100% at nearby frequencies close to those of the guided modes. Our analysis demonstrates a few more patterns of anomalies in nongeneric cases, including anomalies of …
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Ein Beitrag zur experimentell gestützten Tragsicherheitsbewertung von Massivbrücken
… for the experimental assessment of structural safety and usability of concrete structures. By now, the influence of pavement or floor layers and of other factors on the load carrying capacity is not known exactly. In this thesis, it has been investigated how road pavements, the …
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A kinetostatic conceptual framework to design deformable mechanical metamaterials
… behavior of such materials is governed by their structural geometry rather than their chemical composition. Metamaterials generally have two or more levels of hierarchy with a global topology combined with geometric intricacy at constitutive unit cells. The design of mechanical metamaterials is …
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Blunt Force Trauma to the Ribs: Creating Predictive Models
… in a medical examiner's setting, however the structural complexity of ribs make it difficult to move beyond descriptive documentation of injuries. The purpose of this study is to identify common rib fracture patterns, influential variables, and provide probabilistic statements to guide rib …
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Neotectonics Study Along The Frontal Thrust System Of The Fold-Thrust Belt Of Northwest Himalayas, Pakistan
… data, 2D seismic and well data to constrain the structural geometry, geomorphic evolution, and active tectonic deformation of the Himalayan Frontal Thrust System. The first study focuses on the westernmost segment of the Himalayan frontal thrust in the Manzai Ranges. The geologic landscape shows …
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Sliceforms: Deployable structures from interlocking slices
… joints, and the sliceform is foldable if the geometry of the embedded spatial linkage permits it, for example a lattice sliceform (LS) is bi-directionally flat-foldable. This thesis concerns a study of such sliceforms toward the design of novel deployable structures. A sliceform torus, …
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Rectification of 2-D to 3-D Finite Element Analysis in Buried Concrete Arches Under Discrete Loading
… account for continuous elastic support or the geometry of the structure. This results in a conservative analysis at low fill covers (<10') and/or increasing spans (>20’). This research provides a method to rectify the discrepancy that arises in discrete loading of 2-D FE models of semi-flexible …
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Designing a Localized Lower Body Negative Pressure Garment for Long-Duration Spaceflight
… to identify optimal material properties and structural geometry. Iterative physical prototyping resulted in a sinusoidal silicone waveform design, selected for its mechanical stability and user comfort. The final prototype was then evaluated in three experimental phases: (1) mechanical …
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Automation and Expert System Framework for Coupled Shell-Solid Finite Element Modeling of Complex Structures
… using the parameterized full-fidelity and structural fidelity models is presented. Additionally, issues related to the automated meshing of highly complex assemblies is discussed and a strategic volume decomposition technique blueprint is proposed for achieving robust hexahedral meshes in …
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