Tesis sobre el tema "Shear modulu"
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Pinilla, Camilo Ernesto. "Numerical simulation of shear instability in shallow shear flows". Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115697.
Texto completoHarrison, S. Kate. "Comparison of Shear Modulus Test Methods". Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/31772.
Texto completoThe average shear moduli results showed significant differences between the three test methods. For both material types, the shear moduli results determined from the two standard test methods (ASTM D 198 three-point bending and torsion), both of which are presently assumed to be equivalent, were significantly different.
Most average E:G ratios from the two material types and three test methods showed differences from the E:G ratio of 16:1 commonly assumed for structural wooden members. The average moduli of elasticity results for both material types were not significantly different. Therefore, the lack of significant difference between moduli of elasticity terms indicates that differences between E:G ratios are due to the shear modulus terms.
This research has shown differences in shear moduli results of the three test types (ASTM D 198 torsion, ASTM D 198 three-point bending, and the FPBT). Differences in the average E:G ratios per material and test type were also observed.
Master of Science
Yung, See Yuen. "Determination of shear wave velocity and anisotropic shear modulus of an unsaturated soil /". View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20YUNG.
Texto completoGuvenen, Haldun. "Aerodynamics of bodies in shear flow". Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184917.
Texto completoKinney, Landon Scott. "Pore Pressure Generation and Shear Modulus Degradation during Laminar Shear Box Testing with Prefabricated Vertical Drains". BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7709.
Texto completoOlsen, Peter A. "Shear modulus degradation of liquefying sand : quantification and modeling /". Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2132.pdf.
Texto completoOlsen, Peter A. "Shear Modulus Degradation of Liquefying Sand: Quantification and Modeling". BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1214.
Texto completoAlathur, Srinivasan Prem Anand. "Deep Learning models for turbulent shear flow". Thesis, KTH, Numerisk analys, NA, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229416.
Texto completoDjupa neuronät som är tränade med rum-tids utveckling av ett dynamiskt system kan betraktas som ett empiriskt alternativ till konventionella modeller som använder differentialekvationer. I denna avhandling konstruerar vi sådana djupinlärningsmodeller för att modellera en förenklad lågdimensionell representation av turbulensfysiken. Träningsdata för neuronäten erhålls från en 9-dimensionell modell (Moehlis, Faisst och Eckhardt [29]) för olika Fourier-moder i ett skärskikt. Dessa moder har ändamålsenligt valts för att avbilda de turbulenta strukturerna i regionen nära väggen. Amplitudernas tidsserier för dessa moder beskriver fullständigt flödesutvecklingen, och tränade djupinlärningsmodeller används för att förutsäga dessa tidsserier baserat på en kort indatasekvens. Två fundamentalt olika neuronätsarkitekturer, nämligen flerlagerperceptroner (MLP) och långa närminnesnätverk (LSTM), jämförs kvantitativt i denna avhandling. Utvärderingen av dessa arkitekturer är baserad på (i) hur väl deras förutsägelser presterar jämfört med den 9-dimensionella modellen, (ii) förutsägelsernas förmåga att avbilda turbulensstrukturerna nära väggar och (iii) den statistiska överensstämmelsen mellan nätverkets förutsägelser och testdatan. Det visas att LSTM gör förutsägelser med ett fel på ungefär fyra storleksordningar lägre än för MLP. Vidare, är strömningsfälten som är konstruerade från LSTM-förutsägelser anmärkningsvärt noggranna i deras statistiska beteende. I synnerhet uppmättes avvikelser mellan de sanna- och förutsagda värdena för det genomsnittliga flödet till 0; 45 %, och för de strömvisa hastighetsfluktionerna till 2; 49 %.
Raischel, Frank. "Fibre models for shear failure and plasticity". [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-29619.
Texto completoRara, 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.
Texto completoMaster of Science
Cross-Laminated Timber (CLT) is an engineered wood panel product, similar to plywood, constructed with solid-sawn or structural composite lumber in alternating perpendicular layers. The additions included in the incoming 2021 International Building Code (IBC) has placed an importance in expanding the research related to the mechanical and material properties of CLT. Also, with the increasing demand for softwood lumber and CLT panel production, the demand for the domestic softwood lumber could place a burden and surpass the domestic softwood supply. Rolling shear is a failure type that occurs when the wood fibers in the cross-layers roll over each other because of the shearing forces acting upon a CLT panel. This study used the two-plate shear test to measure the rolling shear properties of various southeastern US wood species: southern pine, yellow-poplar, and soft maple. A secondary study was conducted, using the same two-plate shear test, to measure the rolling shear properties of re-manufactured southern pine for CLT cross-layer application. The soft maple had the greatest average rolling shear strength at 5.93 N/mm2 and southern pine had the lowest average rolling shear strength at 2.51 N/mm2. Using a single factor analysis of variance (ANOVA), the rolling shear strength values from soft maple were significantly greater than yellow-poplar, which was significantly greater than the southern pine. For the rolling shear modulus, the southern pine and soft maple were of equal statistically significant difference, and both were greater statistically significant different compared to the yellow-poplar. The most common failure found from testing was rolling shear.
Проценко, Олена Борисівна, Елена Борисовна Проценко, Olena Borysivna Protsenko, Вікторія Володимирівна Ємельяненко, Виктория Владимировна Емельяненко y Viktoriia Volodymyrivna Yemelianenko. "The analysis of the elastic properties of armchair and zigzag single-walled carbon nanotubes". Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20630.
Texto completoParashar, Sandeep Kumar. "Shear induced vibrations in piezoceramic actuators". Herdecke GCA-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2760960&prov=M&dok_var=1&dok_ext=htm.
Texto completoSong, Charlotte Kathryn Cody. "Hydrodynamic stability of confined shear-driven flows". Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/17662.
Texto completoZitko, Jarrett. "Effects of Random Cross-Sectioned Distributions, Fiber Misalignment and Interphases in Three-Dimensional Composite Models on Transverse Shear Modulus". Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4268.
Texto completoMercer, Geoffry Norman. "On standing waves and models of shear dispersion /". Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phm5541.pdf.
Texto completoPRUETT, CHARLES DAVID. "NUMERICAL SIMULATION OF NONLINEAR WAVES IN FREE SHEAR LAYERS (MIXING, COMPUTATIONAL, FLUID DYNAMICS, HYDRODYNAMIC STABILITY, SPATIAL, FLUID FLOW MODEL)". Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183869.
Texto completoSayer, Richard Michael Paul. "Covering and sheaf theories on module categories". Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285575.
Texto completoLo, Kai Fung. "Small-strain shear modulus and damping ratio determination by bender element /". View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20LOK.
Texto completoFilipsson, Tomas. "Shear walls with double plasterboards : evalutation of design models /". Luleå, 2002. http://epubl.luth.se/1402-1757/2002/26.
Texto completoLuo, Sai y 罗赛. "Fabric evolution of two-dimensional idealized particle assemblage during shear". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49799721.
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Civil Engineering
Master
Master of Philosophy
Han, Zhong. "Modelling Stiffness and Shear Strength of Compacted Subgrade Soils". Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35059.
Texto completoTai, Jui-He. "Effect of Void Fraction on Transverse Shear Modulus of Advanced Unidirectional Composites". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6591.
Texto completoAkhi, Taohida Parvin. "Experimental investigation of effective modulus of elasticity and shear modulus of brick masonry wall under lateral load". ISIS Canada Research Network, 2011. http://hdl.handle.net/1993/5304.
Texto completoHipp, Hans Christoph 1959. "Numerical investigation of mode interaction in free shear layers". Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276871.
Texto completoBryant, James William Jr. "Prediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Binders". Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31719.
Texto completoMaster of Science
Copeland, David B. "Measurement of the complex shear modulus and its frequency dependence for viscoelastic materials". Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17517.
Texto completoSaeki, Junya. "Muscle stiffness of posterior lower leg in runners with a history of medial tibial stress syndrome". Kyoto University, 2018. http://hdl.handle.net/2433/232319.
Texto completoWilliams, David. "Modelling crustal earthquakes as propagating shear faults in a layered earth". Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365369.
Texto completoPinto, Thais Silva. "Comportamento de células endoteliais submetidas a um modelo de hipertensão arterial in vitro". Botucatu, 2019. http://hdl.handle.net/11449/181833.
Texto completoResumo: Mudanças nas forças tensionais do shear-stress estão associadas a um repertório de cascatas de sinalização celular, as quais modulam em conjunto o fenótipo vascular tornando o tecido endotelial susceptível a variações patofisiológica e, portanto, compreensão do repertório molecular neste cenário é necessária. Com este propósito, nós submetemos células endoteliais de veia umbilical humana (HUVEC) a um circuito de diferentes forças tensionais in vitro, considerando os grupos seguintes: 1. condição de fluxo de shear-stress fisiológico (nomeado Normo); 2. fluxo de shear-stress hipertenso (nomeado Hyper), e 3. células do grupo 2 foram retornadas para a condição Normo (nomeado Return). As amostras foram apropriadamente coletadas para seguir em diferentes metodologias. Nossos resultados mostraram um forte envolvimento de c-Src no controle da cascata de mecanotransdução modulando sinalização necessária para o fenótipo de adesão, sobrevivência (PI3K/AKT) e proliferação celulares. Além disso, c-Src parece desenvolver importante papel durante o remodelamento da Matriz Extracelular (MEC), cujo performance de matriz metaloproteinases (MMPs) mostrou mudanças significativas. Além disso, através de análise proteômica, mostramos um forte envolvimento de Heat Shock Protein 70 (HSP70) nas células estressadas de modo Hyper, reduzindo significativamente no grupo Return. Esse resultado levou-nos a investigar o proteassoma 20S como uma alternativa proteolítica intracelular para promover o turnover ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Shear-stress changes are associated with a repertory of signaling cascade, modulating vascular phenotype. As shear stress-related tensional forces might be associated with pathophysiological susceptibility, a more comprehensive molecular map needs to be addressed. Thus, we subjected human umbilical vein endothelial cells (HUVECs) to a circuit of different tensional forces in vitro considering the following three groups: one in a physiological blood flow shear-stress condition (named Normo), another in which these cells followed to a hypertensive blood flow shear-stress (named Hyper), and finally one that these hyper-stressed cells were returned to Normo condition (named Return). The samples were properly collected to allow different methodologies analysis. Our data showed a pivotal involvement of c-Src on driving the mechanotransduction cascade by modulating signaling related with adhesion, survival (PI3K/Akt) and proliferative phenotype. Moreover, c-Src seems to develop important role during Extracellular Matrix (ECM) remodeling, which showed significative changes. Additionally, proteomic analysis showed strong involvement of Heat Shock Protein 70 (HSP70) in the hypertensive-stressed cells; it being significantly decreased in Return phenotype. This result prompted us to investigate 20S proteasome as an intracellular proteolytic alternative to promote the turnover of those proteins. Surprisingly, our data reveled significant over expression of sets of proteasome subunit α-typ... (Complete abstract click electronic access below)
Mestre
Michler, Harald. "Schubdübel – Shear Lugs - Ein Modell zur Berechnung von Einbauteilen mit Schubdübeln". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1181553805119-34040.
Texto completoAn experimental and theoretical analysis of the behaviour of complex shear loaded fastenings was carried out at Dresden University of Technology. The main focus was on applications which introduce a great amount of shear load value parallel to the surface into a concrete base using a stell shear lug. The behaviour of these special fixings is presented as the result of the finished research program. Structures, as shown in the opposite figure, are able to transmit high values of shear loads to the anchor ground. An additional loading of normal force und bending moment is suitable, but will only be supposed to cover the necessary tolerance and off centre condition of the fixture parts. The advantage of fastening with shear lugs is based on the splitting of the load transfer into different components. The shear lug/lugs caries/carry the shear load, and the tie bar itself only balances the system by tension load due to moment loading and normal loading. Thusall loads are transferred by highly specialized components. If the base plate is embedded, there will be a shear load transferred in front of the base plate, too. The load carrying behaviour of the fastenings in the experiments is analyzed. Here, the load-displacement relationship is of special importance . This thesis aims at elaborating a dimensioning concept for the design of shear lugs. The tests show a decisive influence of the movements – displacements as well as rotations – of the fastenings to the load carrying capacity. In order to to be able to examine this behaviour, the experiment is redesigned by finite elements. In a first step it is therefore possible to examine fastenings without movements based on the anchor bolt stiffness. In a second step, the influence of the deformation can be explored. Here, the parameters can be varied more exactly and in a more complex way than this is possible in terms of quantity with the comparetively extensive test setup. The calculation method being introduced here does not only supply the maximum shear load transfer capacity of the hole fastening system, a system with free geometries, but also shows the partial shear load transfer capacity of the individual parts of the unit. This method is a means of predicting the load-related behaviour of the fastenings to be expected, including the forecast of partial failure states. As a result, a suggestion for the design of the fittings is shown. This design can be applied to all fittings by splitting the different load components to especially provided anchor elements. The design resistance and behaviour of the fastenings is estimated, depending on different geometries and stiffness conditions of the lug. Different strength classes of the concrete as well as different load combinations are taken into consideration. First examples from building sites are also available
Fournier, Mathew. "Investigations into the Shear Strength Reduction method using distinct element models". Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2492.
Texto completoMichler, Harald. "Schubdübel – Shear Lugs - Ein Modell zur Berechnung von Einbauteilen mit Schubdübeln". Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A23930.
Texto completoAn experimental and theoretical analysis of the behaviour of complex shear loaded fastenings was carried out at Dresden University of Technology. The main focus was on applications which introduce a great amount of shear load value parallel to the surface into a concrete base using a stell shear lug. The behaviour of these special fixings is presented as the result of the finished research program. Structures, as shown in the opposite figure, are able to transmit high values of shear loads to the anchor ground. An additional loading of normal force und bending moment is suitable, but will only be supposed to cover the necessary tolerance and off centre condition of the fixture parts. The advantage of fastening with shear lugs is based on the splitting of the load transfer into different components. The shear lug/lugs caries/carry the shear load, and the tie bar itself only balances the system by tension load due to moment loading and normal loading. Thusall loads are transferred by highly specialized components. If the base plate is embedded, there will be a shear load transferred in front of the base plate, too. The load carrying behaviour of the fastenings in the experiments is analyzed. Here, the load-displacement relationship is of special importance . This thesis aims at elaborating a dimensioning concept for the design of shear lugs. The tests show a decisive influence of the movements – displacements as well as rotations – of the fastenings to the load carrying capacity. In order to to be able to examine this behaviour, the experiment is redesigned by finite elements. In a first step it is therefore possible to examine fastenings without movements based on the anchor bolt stiffness. In a second step, the influence of the deformation can be explored. Here, the parameters can be varied more exactly and in a more complex way than this is possible in terms of quantity with the comparetively extensive test setup. The calculation method being introduced here does not only supply the maximum shear load transfer capacity of the hole fastening system, a system with free geometries, but also shows the partial shear load transfer capacity of the individual parts of the unit. This method is a means of predicting the load-related behaviour of the fastenings to be expected, including the forecast of partial failure states. As a result, a suggestion for the design of the fittings is shown. This design can be applied to all fittings by splitting the different load components to especially provided anchor elements. The design resistance and behaviour of the fastenings is estimated, depending on different geometries and stiffness conditions of the lug. Different strength classes of the concrete as well as different load combinations are taken into consideration. First examples from building sites are also available.
O'Connor, Bernard. "High strain deformation and ultimate failure of HIPS and ABS polymers". Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245417.
Texto completoHe, Yi. "Effect of Additives on Crystallization of a Mixture of Fully Hydrogenated Canola Oil and Canola Oil". The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503180621875492.
Texto completoLau, Eike Sören. "On generalised D-Shtukas". Bonn : Mathematisches Institut der Universität, 2004. http://catalog.hathitrust.org/api/volumes/oclc/62768207.html.
Texto completoWilliams, Scott A. "Numerical Analysis of Reinforced Masonry Shear Walls Using the Nonlinear Truss Approach". Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/25219.
Texto completoMaster of Science
Cropper, Michael Evan. "Analytical and Experimental Investigation of the Damping Matrix in Shear Building Models". NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-03282006-113719/.
Texto completoAhmed, A. A. "The development of 3D cancer cell models using shear-spun fibrous scaffolds". Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1557992/.
Texto completoCorner, Sebastien Marc William. "Screw-Fastened Cold-Formed Steel-to-Steel Shear Connection Behavior and Models". Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/78073.
Texto completoMaster of Science
Sreedhar, Madhu K. "Large eddy simulation of turbulent vortices and mixing layers". Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-163324/.
Texto completoJalali, Mosallam Seyed Javad. "A new test method for measuring the longitudinal and shear moduli of fiber-reinforced composites". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0026/NQ31527.pdf.
Texto completoPilakoutas, Kypros. "Earthquake resistant design of reinforced concrete walls". Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/7215.
Texto completoŠtěpanovský, Vlastimil. "Problematika stárnutí asfaltových pojiv a směsí". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227164.
Texto completoSelk, Rawley Jack. "Quick Shear Testing of Aggregate Base Materials Stabilized with Geogrid". BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6571.
Texto completoCurd, Jason M. "Unsaturated Soil Parameters From Field Stiffness Measurements". UKnowledge, 2013. http://uknowledge.uky.edu/ce_etds/11.
Texto completoLarsson, David. "Accuracy Assessment of Shear Wave Elastography for Arterial Applications by Mechanical Testing". Thesis, KTH, Hållfasthetslära (Avd.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160091.
Texto completoApaza, Marco Aurelio Flores. "Determinação do Gmáx através do método de análise espectral de ondas superficiais". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3145/tde-21082009-165223/.
Texto completoThis dissertation presents the spectral-analysis-of-surface-waves (SASW) method as a tool for obtaining the variations in the modulus shear (Gmax) with depth in the field of very small strains (below 0,001%). The SASW method is a nondestructive in situ seismic method, based on the generation and measurement of Rayleigh wave and on its dispersive characteristic nature. Throughout the implementation of an impact on the soil surface and the detection of the wave at various points by two receptors a dispersion curve is constructed (phase velocity versus wave-length). This dispersion curve is then inverted. Inversion is an analytical process for reconstructing the shear wave velocity profile from the experimental field. The shear modulus of each layer is readily obtained from the shear wave velocity profile. The theoretical content of the dissertation presents dynamic properties of the soils and is described in the equations that dominate the propagation of elastic waves, both in homogeneous media and in stratified media. The methodology developed to obtain the dispersion curves through the implementation of SASW test is defined, and results from tests carried out at the University Campus in São Paulo are presented and compared with values obtained from correlations based on SPT tests. These comparisons indicate that the SASW method is a good alternative to determine the profile of stiffness (Gmax) of the soil, agreeing with the level of deformation involved in the tests. Studies on the methods sensitivity are developed to verify the influence on the changing of the parameters given (natural unit weight, Poisson coefficient and thickness of layers) in reduction of data (inversion) on the final profile of VS. The conclusion is that the Poisson coefficient is the parameter with greater influence.
Chin, David 1982. "Wall shear patterns of a 50% asymmetric stenosis model using photochromic molecular flow visualization". Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111613.
Texto completoBicici, Erkan. "Development of Computational Models for Cyclic Response of Reinforced Concrete Columns". The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543501310572891.
Texto completoArciero, Julia. "Theoretical Models of Blood Flow Regulation". Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195903.
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