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Dissertations / Theses on the topic 'Planar Shear'

Author: Grafiati

Published: 27 June 2021

Last updated: 29 July 2025

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1

Lucas, Davidson Glenn. "High Frequency Direct Excitation of Small-Scale Motions in Planar Shear Flows." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/10579.

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The effect of direct, small-scale excitation on the evolution of a plane shear layer which forms at the edge of a backward facing step is investigated experimentally using high resolution particle image velocimetry and hot-wire anemometry. Actuation is effected at frequencies that are over an order of magnitude higher than the characteristic (or natural) formation frequency of the layer by a spanwise array of piezoelectrically-driven synthetic jet actuators that are placed near the edge of the step. The actuation has significant effects on the evolution of both large- and small-scale motions

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2

Frascoli, Federico. "Chaotic and rheological properties of liquids under planar shear and elongational flows." Swinburne Research Bank, 2007. http://hdl.handle.net/1959.3/22416.

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Thesis (PhD) - Swinburne University of Technology, Centre for Molecular Simulation - 2007.<br>Dissertation submitted in fulfilment of requirements for the degree Doctor of Philosophy, Centre for Molecular Simulation, Faculty of Information and Communication Technologies, Swinburne University of Technology, 2007. Typescript. Includes bibliographical references (p. 151-161).

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3

Rara, Angela Dominique Sarmiento. "Rolling Shear Strength and Modulus for Various Southeastern US Wood Species using the Two-Plate Shear Test." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104017.

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Cross-Laminated Timber (CLT) is an engineered wood product made by laminating dimensional or structural composite lumber in alternating orthogonal layers. Compared to Canada and Europe, CLT is a novel product to the US. With the additions included in the 2021 International Building Code (IBC), CLT material properties, especially rolling shear, would need to be explored. The increasing demand for softwood lumber, along with the increase of demand of CLT panel production, could place a burden and surpass the domestic softwood supply. Rolling shear is a phenomenon that occurs when the wood fibers

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4

Papazoglou, Sebastian. "Elucidation of isotropic and anisotropic shear elasticity of in vivo soft tissue using planar magnetic resonance elastography." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2010. http://dx.doi.org/10.18452/16136.

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Die Magnetresonanzelastographie (MRE) stellt ein nichtinvasives Verfahren dar, welches die Bestimmung der in vivo Scherelastizität weicher Gewebe ermöglicht. Im Rahmen diese Arbeit wurden Methoden zur Bestimmung isotroper und anisotroper Scherelastizitäten anhand von MRE Wellenbildern entwickelt und evaluiert. Alle in dieser Arbeit vorgestellten Methoden basieren auf planarer MRE, d.h. auf der Aufnahme einer einzelnen Auslenkungskomponente innerhalb der Bildschicht. Dadurch wird die MRE erheblich beschleunigt. Allerdings stellen sich dadurch auch besondere Anforderungen an die Datenauswertun

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5

Hyensjö, Marko. "Fibre Orientation Modelling Applied to Contracting Flows Related to Papermaking." Doctoral thesis, KTH, Mekanik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4762.

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The main goal of this work was to develop numerical models for studying the behaviour of fibres in an accelerated flow. This is of special interest for e.g. papermaking. The early stage of the paper manufacturing process determines most of the final properties of a paper sheet. The complexity of studying the flow of fibre suspensions both experimentally and numerically emphasises a need for new ideas and developments. By means of solving the evolution of a convective-dispersion equation, i.e. the Fokker-Planck equation, a fully 3D approach with respect to the position and the two fibre angles,

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6

Howell, Jaron A. "Distribution of Particle Image Velocimetry (PIV) Errors in a Planar Jet." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7004.

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Particle Image Velocimetry (PIV) is an optical fluid measurement technique used to obtain velocity measurements. Two PIV systems were used to capture data simultaneously and measurement error for the MS PIV system is calculated. An investigation of error distribution is performed to determine when uncertainty estimations fail for the CS PIV-UQ method. Investigation of when results from multi pass PIV processing are achieve were performed so that reliable uncertainty estimations are produced with the CS method. An investigation was also performed which determined that error distributions in PIV

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7

Vezirov, Tarlan Azad [Verfasser], Sabine [Akademischer Betreuer] Klapp, and Michael [Akademischer Betreuer] Zaks. "Non-equilibrium dynamics and feedback control of strongly confined colloidal suspensions in a planar shear flow / Tarlan Azad Vezirov. Gutachter: Sabine Klapp ; Michael Zaks. Betreuer: Sabine Klapp." Berlin : Technische Universität Berlin, 2015. http://d-nb.info/1075807522/34.

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8

Heczko, Martin. "Počítačové modelování hranic dvojčatění ve slitinách s tvarovou pamětí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416633.

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This Master‘s thesis is focused on theoretical study of twinning in magnetic shape memory alloys based on Ni2MnGa using ab initio calculations of electronic structure within the projector augmented wave method. In particular, the effect of increasing concentration of manganese at the expense of gallium was studied on total energy and stress profiles along different deformation paths in the (10-1)[101] shear system of non-modulated martensite. Further, this work deals with the effect of the concentration of manganese on the energy of planar fault caused by presence of partial dislocation due to

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9

Petersen, Spencer Ray. "A System for Foot Joint Kinetics – Integrating Plantar Pressure/Shear with Multisegment Foot Modeling." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8456.

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Introduction: Instrumented gait analysis and inverse dynamics are commonly used in research and clinical practice to calculate lower extremity joint kinetics, such as power and work. However, multisegment foot (MSF) model kinetics have been limited by ground reaction force (GRF) measurements. New technology enables simultaneous capture of plantar pressure and shear stress distributions but has not yet been used with motion capture. Integrating MSF models and pressure/shear measurements will enhance the analysis of foot joint kinetics. The purpose of this study was to develop methodology to int

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10

Hosein, Riad. "An investigation of in-shoe plantar pressures and shear stresses with particular reference to diabetic peripheral neuropathy." Thesis, King's College London (University of London), 1996. https://kclpure.kcl.ac.uk/portal/en/theses/an-investigation-of-inshoe-plantar-pressures-and-shear-stresses-with-particular-reference-to-diabetic-peripheral-neuropathy(b0ebff48-2d9e-4fb7-8730-4ae42704ad0b).html.

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11

Jeong, Hwigeum. "Short-Term Effects of Increased Body Mass and Distribution on Plantar Shear, Postural Control, and Gait Kinetics: Implications for Obesity." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8609.

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Context: Obesity is a growing global health concern. The increased body mass and altered mass distribution associated with obesity may be related to increases in plantar shear that putatively leads to physical functional deficits. Therefore, measurement of plantar shear may provide unique insights on the effects of body mass and body distribution on physical function or performance. Purpose: 1) To investigate the effects of body mass and distribution on plantar shear; 2) To examine how altered plantar shear influences postural control and gait kinetics. Hypothesis: 1) a weighted vest forward d

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12

Reimnitz, Marc. "Shear-slip induced seismic activity in underground mines : a case study in Western Australia." University of Western Australia. School of Civil and Resource Engineering, 2004. http://theses.library.uwa.edu.au/adt-WU2004.0062.

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Mining induced seismic activity and rockbursting are critical concerns for many underground operations. Seismic activity may arise from the crushing of highly stressed volumes of rock around mine openings or from shear motion on planes of weakness. Shear-slip on major planes of weakness such as faults, shear zones and weak contacts has long been recognized as a dominant mode of failure in underground mines. In certain circumstances, it can generate large seismic events and induce substantial damage to mine openings. The Big Bell Gold mine began experiencing major seismic activity and resultant

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13

Lukassen, Laura Johanna [Verfasser], Martin [Akademischer Betreuer] Oberlack, and Dieter [Akademischer Betreuer] Bothe. "A colored-noise Fokker-Planck equation for non-Brownian particles in shear-induced diffusion / Laura Johanna Lukassen. Betreuer: Martin Oberlack ; Dieter Bothe." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2015. http://d-nb.info/1111909989/34.

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14

Godoy, Tatiane Corrêa de. "Modelagem de placas laminadas com materiais piezoelétricos conectados a circuitos shunt resistivo-indutivo." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-12062008-112524/.

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Este trabalho apresenta uma modelagem de placas laminadas com sensores/atuadores piezoelétricos integrados e conectados a circuitos tipo shunt resistivo-indutivo (RL). O modelo faz uso de duas teorias de placa, FSDT (First-order Shear Deformatíon Theory) e TSDT (Third-order Shear Deformatíon Theory), e considera a possibilidade de inserção de pastilhas piezoelétricas trabalhando nos modos de extensão e cisalhamento. Um modelo de elementos finitos para placas laminadas piezoelétricas, em camada equivalente (Equivalent Single Layer), foi desenvolvido usando como graus de liberdade os deslocament

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15

Guo, Tianyi. "Using Light to Study Liquid Crystals and Using Liquid Crystals to Control Light." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1595210881250992.

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16

RODRIGUES, David Rosa. "Comparação experimental entre tipos de armadura de cisalhamento para combate à punção em lajes cogumelo de concreto armado: Stud rails e Double headed studs." Universidade Federal de Goiás, 2009. http://repositorio.bc.ufg.br/tede/handle/tde/683.

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Made available in DSpace on 2014-07-29T15:03:41Z (GMT). No. of bitstreams: 1 David Rosa Rodrigues.pdf: 6647846 bytes, checksum: 0949b9b9e50ce27a724b92ea2943c5d1 (MD5) Previous issue date: 2009-09-29<br>This research presents the results of an experimental comparison between the types of shear reinforcement "stud rails" and "double headed studs" to combat the punching shear of a reinforced concrete flat slabs. It also presents a comparison of experimental results with those provided under the ACI 318/2005, CEB-FIP MC/1990, EUROCODE 2/2004 and NBR 6118:2003. The motivation was to investigate t

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17

McKellar, Dougan Kelk. "A dislocation model of plasticity with particular application to fatigue crack closure." Thesis, University of Oxford, 2001. http://ora.ox.ac.uk/objects/uuid:45183b90-017f-4ac1-9550-94772a0ca88b.

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The ability to predict fatigue crack growth rates is essential in safety critical systems. The discovery of fatigue crack closure in 1970 caused a flourish of research in attempts to simulate this behaviour, which crucially affects crack growth rates. Historically, crack tip plasticity models have been based on one-dimensional rays of plasticity emanating from the crack tip, either co-linear with the crack (for the case of plane stress), or at a chosen angle in the plane of analysis (for plane strain). In this thesis, one such model for plane stress, developed to predict fatigue crack closure,

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18

Júnior, Faustino Sanches. "Desenvolvimento de modelos numéricos para a análise de estruturas de pavimentos de edifícios." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-31032016-121303/.

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Este trabalho fornece uma contribuição à análise estrutural não-linear de pavimentos de edifícios de concreto armado com o emprego do Método dos Elementos Finitos. A deformação por esforço cortante é considerada, portanto as teorias de Timoshenko e de Reissner-Mindlin são empregadas nas formulações dos elementos de barra e de placa, respectivamente. As posições dos elementos de barra e de placa são independentes e, portanto, podem ser definidas em diferentes planos. Em conseqüência do exposto, o efeito de membrana deve ser necessariamente considerado na modelagem do pavimento. Para completar o

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19

Muehlemann, Anton. "Variational models in martensitic phase transformations with applications to steels." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:bb7f4ff4-0911-4dad-bb23-ada904839d73.

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This thesis concerns the mathematical modelling of phase transformations with a special emphasis on martensitic phase transformations and their application to the modelling of steels. In Chapter 1, we develop a framework that determines the optimal transformation strain between any two Bravais lattices and use it to give a rigorous proof of a conjecture by E.C. Bain in 1924 on the optimality of the so-called Bain strain. In Chapter 2, we review the Ball-James model and related concepts. We present some simplification of existing results. In Chapter 3, we pose a conjecture for the explicit form

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20

FENG, DE-ZHI, and 馮德智. "Nonlinear analysis of planar curved beam with shear deformation." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/17811086600384537619.

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21

Pickett, Lyle M. "Structure of a planar reacting shear layer using hydrocarbon fuels." 2000. http://www.library.wisc.edu/databases/connect/dissertations.html.

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22

Medronho, Bruno Filipe Figueiras. "Shear-induced transitions in complex fluids : planar lamellae and multilamellar vesicles." Doctoral thesis, 2009. http://hdl.handle.net/10316/12183.

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23

Yi-TsungYeh and 葉宜璁. "Mixing of shear-thinning fluids in a zigzag planar microchannels with baffles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/59166046862100198896.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>98<br>In this work, we investigate the mixing behavior of shear-thinning fluids in a zigzag planar microchannel with baffles. The shear-thinning fluids considered in this work are the aqueous solution of Carboxymethyl Cellulose Sodium. The power-law has been employed for modelling the relation between shear stress and shear rate of the shear-thinning fluid. Then, we apply the commercial package, CFD-ACE+, to simulate the 3-D flow field and mixing behavior in the micromixer. Numerical simulation is performed for various distances between bends, flow rates, fluid pr

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24

Brunetti, Jonathan A. "Examining a Role for Planar Cell Polarity Signaling in Endothelial Cell Alignment and Organization." Thesis, 2012. http://hdl.handle.net/1807/33497.

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Endothelial cells (ECs) respond to flow but the exact mechanism producing alignment is not completely understood. We characterized EC alignment in microfluidic channels, 4 mm wide by 350 um high, to generate shear of 20 dynes / cm2 across the cell surface. In microchannels, ECs aligned perpendicular under flow. Analytical tools were developed to quantify nuclear alignment at 67% for human umbilical vein endothelial cells (HUVECs); cell elongation under shear flow shifted aspect ratio from 2.41 to 2.86. We next sought to probe the mechanism through which ECs communicate during realignment. The

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25

Papazoglou, Sebastian [Verfasser]. "Elucidation of isotropic and anisotropic shear elasticity of in vivo soft tissue using planar magnetic resonance elastography / von Sebastian Papazoglou." 2009. http://d-nb.info/1007738316/34.

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26

Shen, Fu-Chiun, and 沈富群. "Plantar Pressure/Shear Sensor Array with Bluetooth Low Energy." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/9p83da.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>101<br>Plantar pressure/shear force array sensor are placed at the bottom of the shoe-pads. When user walks with them, the soles of shoes touch the ground. The Sensing unit perceives different level of pressure and adopts a set of four sensors to detect the Shear force direction. The analog signal is transformed to digital data through the microprocessor in the circuit. The digital signal will then be transmitted to mobile phones or computers through wireless transmission by bluetooth module. As a mobile phone or a computer receives the data, it shows the corre

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27

Kang, Wei-Shui, and 康維訓. "The development of plantar pressure and shear force measuring technologies." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/7yq4mg.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>99<br>This study is to develop the plantar pressure and shear force measuring technologies. There are two parts of this study. The first part is the planter pressure and shear force recording plate based on micro structure imprint. The second part is the image based planter pressure measuring and shear force calculation. For the recording plate, it is fabricated by hard poly and soft PU. There are many different geometric designs have been tested. For the image based measuring system, a way to calculate the shear force based on the normal pressure distribution has

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28

Lukassen, Laura Johanna. "A colored-noise Fokker-Planck equation for non-Brownian particles in shear-induced diffusion." Phd thesis, 2015. http://tuprints.ulb.tu-darmstadt.de/4587/7/Dissertation_Lukassen.pdf.

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The topic of the present work are non-Brownian particles in shear flow. As reported in literature, the occurring phenomenon in this context is shear-induced diffusion which takes place in the absence of the well-known Brownian diffusion. Diffusive processes can be described stochastically in terms of a stochastic differential equation (Langevin equation or Langevin-like equation) or a differential equation for the probability density, in second order referred to as Fokker-Planck equation. It is known that in contrast to Brownian diffusion, the shear-induced diffusion is a long-time diffu

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29

Leite, Tiago Maurício de Pinho. "Optical fiber solutions to physical rehabilitation systems and e-Health applications." Master's thesis, 2018. http://hdl.handle.net/10773/25194.

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In this dissertation a biaxial optical fiber sensor, based on Bragg gratings, is proposed for simultaneous monitoring of plantar and shear pressures. This work begins with the definition of the problem: the consequences of pathologies associated with diabetic foot and lower limbs disorders. It was analysed several previously published studies on plantar pressure sensors, the several methodologies and applications that already exist. A biomechanical research was carried out, with particular focus on gait pattern and human foot anatomy, in order to understand the different gait phases and poin

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30

Barroso, Viviane Setti. "A consistent linear two-dimensional mathematical model for thin two-layer plates with partial shear interaction." Master's thesis, 2020. http://hdl.handle.net/10316/92236.

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Dissertação de Mestrado Integrado em Engenharia Civil apresentada à Faculdade de Ciências e Tecnologia<br>This dissertation presents a consistent derivation, from three-dimensional linear elasticity, of a two-dimensional mathematical model describing the bending and in-plane stretching behaviours, under a general system of quasi-static distributed loads, of thin two-layer plates with partial shear interaction. The following key assumptions are made:(i) Each layer, when considered separately, behaves as a Kirchhoff plate.(ii) The interlayer (with non-zero thickness), when considered separately,

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