Relevant bibliographies by topics / Structural geometry

Academic literature on the topic 'Structural geometry'

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Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Structural geometry"

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McRobie, Allan. "The geometry of structural equilibrium." Royal Society Open Science 4, no. 3 (March 2017): 160759. http://dx.doi.org/10.1098/rsos.160759.

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Building on a long tradition from Maxwell, Rankine, Klein and others, this paper puts forward a geometrical description of structural equilibrium which contains a procedure for the graphic analysis of stress resultants within general three-dimensional frames. The method is a natural generalization of Rankine’s reciprocal diagrams for three-dimensional trusses. The vertices and edges of dual abstract 4-polytopes are embedded within dual four-dimensional vector spaces, wherein the oriented area of generalized polygons give all six components (axial and shear forces with torsion and bending moments) of the stress resultants. The relevant quantities may be readily calculated using four-dimensional Clifford algebra. As well as giving access to frame analysis and design, the description resolves a number of long-standing problems with the incompleteness of Rankine’s description of three-dimensional trusses. Examples are given of how the procedure may be applied to structures of engineering interest, including an outline of a two-stage procedure for addressing the equilibrium of loaded gridshell rooves.
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Pauly, Mark, Niloy J. Mitra, Johannes Wallner, Helmut Pottmann, and Leonidas J. Guibas. "Discovering structural regularity in 3D geometry." ACM Transactions on Graphics 27, no. 3 (August 2008): 1–11. http://dx.doi.org/10.1145/1360612.1360642.

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Dela Haije, Tom, Peter Savadjiev, Andrea Fuster, Robert T. Schultz, Ragini Verma, Luc Florack, and Carl-Fredrik Westin. "Structural Connectivity Analysis Using Finsler Geometry." SIAM Journal on Imaging Sciences 12, no. 1 (January 2019): 551–75. http://dx.doi.org/10.1137/18m1209428.

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MIKI, Mitsunori, Yoshisada MUROTSU, and Hiroyuki TAGO. "Knowledge-Based Approach to Geometric and Structural Analysis of Variable Geometry Trusses." Journal of the Japan Society for Aeronautical and Space Sciences 44, no. 515 (1996): 712–19. http://dx.doi.org/10.2322/jjsass1969.44.712.

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Gui, Baoling, Dengfa He, Yongsheng Zhang, Yanpeng Sun, Jingyi Huang, and Wenjun Zhang. "Geometry and kinematics of extensional structural wedges." Tectonophysics 699 (March 2017): 199–212. http://dx.doi.org/10.1016/j.tecto.2017.01.013.

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Stepanyants, Armen, Patrick R. Hof, and Dmitri B. Chklovskii. "Geometry and Structural Plasticity of Synaptic Connectivity." Neuron 34, no. 2 (April 2002): 275–88. http://dx.doi.org/10.1016/s0896-6273(02)00652-9.

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McRobie, Allan. "Correction to ‘The geometry of structural equilibrium’." Royal Society Open Science 4, no. 5 (May 2017): 170338. http://dx.doi.org/10.1098/rsos.170338.

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Pushnov, A. S., M. G. Berengarten, A. M. Kagan, and A. S. Ryabushenko. "Helicoid-structural packing with varied stacking geometry." Russian Journal of Applied Chemistry 80, no. 11 (November 2007): 2005–7. http://dx.doi.org/10.1134/s107042720711050x.

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Ma, Zhenyu, Pingze Zhang, and Jianxun Zhu. "Investigation of the classification and properties of three-dimensional textile fabrics." Journal of Engineered Fibers and Fabrics 14 (January 2019): 155892501988996. http://dx.doi.org/10.1177/1558925019889960.

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Three-dimensional textile fabrics are used as the reinforcing phase of the textile structural composites, and their geometry affect the physical and mechanical properties of composites. Based on the curvature and directions of the fiber tows in three-dimensional textile fabrics, four representative geometric units are proposed, namely, the orthogonal geometric unit, the curved geometric unit, the skew geometric unit, and the uniform distribution unit, respectively. Other units are the combinations or derivations of these representative geometric units. The relationship and performance characteristics of these representative geometric units are discussed in section “The relationship of RGUs.” The structural features of three-dimensional textile fabrics are illustrated on the mesoscopic scale, and the models are established to predict the geometric properties. The concepts of fabrics with stable structure, flexible structure, elastoplastic structure, and uniform structure are proposed. The fiber volume fractions and elastic characteristics of different structural fabrics are discussed. The classification of three-dimensional textile fabrics is conducive to investigate the relationship between geometry and property, forming a technical system and providing a theoretical basis for the selection of three-dimensional structural textile composites with different performance.
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Li, Zhengning, Ge Chen, Haichen Lyu, Chenwang Yuan, and Frank Ko. "Structural Characterization of Hexagonal Braiding Architecture Aided by 3D Printing." MATEC Web of Conferences 153 (2018): 08004. http://dx.doi.org/10.1051/matecconf/201815308004.

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Hexagonal braiding method has the advantages of high shape compatibility, interlacing density and high volume fraction. Based on hexagonal braiding method, a hexagonal preform was braided. Then, by following the characteristics of repeatability and concentricity of hexagonal braided preform, the printed geometry structure was got in order to understand and optimize geometric structure to make it more compact like the braided geometric structure. Finally, the unit cells were defined with hexagonal prism to analyze the micro-geometric structure of hexagonal braided preform.
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Dissertations / Theses on the topic "Structural geometry"

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El, Ghawalby Heyayda. "Spectral geometry for structural pattern recognition." Thesis, University of York, 2011. http://etheses.whiterose.ac.uk/1525/.

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Graphs are used pervasively in computer science as representations of data with a network or relational structure, where the graph structure provides a flexible representation such that there is no fixed dimensionality for objects. However, the analysis of data in this form has proved an elusive problem; for instance, it suffers from the robustness to structural noise. One way to circumvent this problem is to embed the nodes of a graph in a vector space and to study the properties of the point distribution that results from the embedding. This is a problem that arises in a number of areas including manifold learning theory and graph-drawing. In this thesis, our first contribution is to investigate the heat kernel embedding as a route to computing geometric characterisations of graphs. The reason for turning to the heat kernel is that it encapsulates information concerning the distribution of path lengths and hence node affinities on the graph. The heat kernel of the graph is found by exponentiating the Laplacian eigensystem over time. The matrix of embedding co-ordinates for the nodes of the graph is obtained by performing a Young-Householder decomposition on the heat kernel. Once the embedding of its nodes is to hand we proceed to characterise a graph in a geometric manner. With the embeddings to hand, we establish a graph characterization based on differential geometry by computing sets of curvatures associated with the graph nodes, edges and triangular faces. The second contribution comes from the need to solve the problem that arise in the processing of a noisy data over a graph. The Principal difficulty of this task, is how to preserve the geometrical structures existing in the initial data. Bringing together several, distinct concepts that have received some independent recent attention in machine learning; we propose a framework to regularize real-valued or vector-valued functions on weighted graphs of arbitrary topology. The first of these is deduced from the concepts of the spectral graph theory that have been applied to a wide range of clustering and classification tasks over the last decades taking in consideration the properties of the graph \(p\)-Laplacian as a nonlinear extension of the usual graph Laplacian. The second one is the geometric point of view comes from the heat kernel embedding of the graph into a manifold. In these techniques we use the geometry of the manifold by assuming that it has the geometric structure of a Riemannian manifold. The third important conceptual framework comes from the manifold regularization which extends the classical framework of regularization in the sense of reproducing Hilbert Spaces to exploit the geometry of the embedded set of points. The proposed framework, based on the \(p\)-Laplacian operators considering minimizing a weighted sum of two energy terms: a regularization one and an additional approximation term which helps to avoid the shrinkage effects obtained during the regularization process. The data are structured by functions depending on data features, the curvature attributes associated with the geometric embedding of the graph. The third contribution is inspired by the concepts and techniques of the graph calculus of partial differential functions. We propose a new approach for embedding graphs on pseudo-Riemannian manifolds based on the wave kernel which is the solution of the wave equation on the edges of a graph. The eigensystem of the wave-kernel is determined by the eigenvalues and the eigenfunctions of the normalized adjacency matrix and can be used to solve the edge-based wave equation. By factorising the Gram-matrix for the wave-kernel, we determine the embedding co-ordinates for nodes under the wave-kernel. The techniques proposed through this thesis are investigated as a means of gauging the similarity of graphs. We experiment on sets of graphs representing the proximity of image features in different views of different objects in three different datasets namely, the York model house, the COIL-20 and the TOY databases.
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Davis, Robert Tucker. "Geometric Build-up Solutions for Protein Determination via Distance Geometry." TopSCHOLAR®, 2009. http://digitalcommons.wku.edu/theses/102.

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Proteins carry out an almost innumerable amount of biological processes that are absolutely necessary to life and as a result proteins and their structures are very often the objects of study in research. As such, this thesis will begin with a description of protein function and structure, followed by brief discussions of the two major experimental structure determination methods. Another problem that often arises in molecular modeling is referred to as the Molecular Distance Geometry Problem (MDGP). This problem seeks to find coordinates for the atoms of a protein or molecule when given only a set of pair-wise distances between atoms. To introduce the complexities of the MDGP we begin at its origins in distance geometry and progress to the specific sub-problems and some of the solutions that have been developed. This is all in preparation for a discussion of what is known as the Geometric Build-up (GBU) Solution. This solution has lead to the development of several algorithms and continues to be modified to account for more and different complexities. The culmination of this thesis, then, is a new algorithm, the Revised Updated Geometric Build-up, that is faster than previous GBU’s while maintaining the accuracy of the resulting structure.
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Bousfield, R. A. "Applications of differential geometry to structural mechanics." Thesis, University of Hertfordshire, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372544.

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Gabbrielli, Ruggero. "Foam geometry and structural design of porous material." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507759.

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Chiao, Ling-Yun. "Membrane deformation rate and geometry of subducting slabs /." Thesis, Connect to this title online; UW restricted, 1991. http://hdl.handle.net/1773/6814.

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Lyytik�inen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." University of Sydney. School of Physics and the Optical Fibre Technology Centre, 2004. http://hdl.handle.net/2123/597.

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Drawing of standard telecommunication-type optical fibres has been optimised in terms of optical and physical properties. Specialty fibres, however, typically have more complex dopant profiles. Designs with high dopant concentrations and multidoping are common, making control of the fabrication process particularly important. In photonic crystal fibres (PCF) the inclusion of air-structures imposes a new challenge for the drawing process. The aim of this study is to gain profound insight into the behaviour of complex optical fibre structures during the final fabrication step, fibre drawing. Two types of optical fibre, namely conventional silica fibres and PCFs, were studied. Germanium and fluorine diffusion during drawing was studied experimentally and a numerical analysis was performed of the effects of drawing parameters on diffusion. An experimental study of geometry control of PCFs during drawing was conducted with emphasis given to the control of hole size. The effects of the various drawing parameters and their suitability for controlling the air-structure was studied. The effect of air-structures on heat transfer in PCFs was studied using computational fluid dynamics techniques. Both germanium and fluorine were found to diffuse at high temperature and low draw speed. A diffusion coefficent for germanium was determined and simulations showed that most diffusion occurred in the neck-down region. Draw temperature and preform feed rate had a comparable effect on diffusion. The hole size in PCFs was shown to depend on the draw temperature, preform feed rate and the preform internal pressure. Pressure was shown to be the most promising parameter for on-line control of the hole size. Heat transfer simulations showed that the air-structure had a significant effect on the temperature profile of the structure. It was also shown that the preform heating time was either increased or reduced compared to a solid structure and depended on the air-fraction.
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Lyyttkäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing /." Connect to full text, 2004. http://setis.library.usyd.edu.au/adt/public_html/adt-NU/public/adt-NU20041011.120247.

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Lyytikäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." Connect to full text, 2004. http://hdl.handle.net/2123/597.

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Thesis (Ph. D.)--University of Sydney, 2004.
Title from title screen (viewed 14 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Physics, Faculty of Science. Includes bibliographical references. Also available in print form.
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Dunne, Barry John. "Structural deformations in phosphorus and nitrogen complexes." Thesis, University of Bristol, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.346442.

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Medema, Guy Frederick. "Juan de Fuca subducting plate geometry and intraslab seismicity /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/6828.

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Books on the topic "Structural geometry"

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Gilroy, Layton E. Structural dynamics of Trussarm. [Downsview, Ont.]: Dept. of Aerospace Science and Engineering, 1989.

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Curtis, Mark. The Geometry of DNA: A structural revision. London: Blue Gallery, 1997.

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Curtis, Mark. The geometry of DNA: A structural revision. London: Blue Gallery, 1997.

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Biswal, Tapas Kumar, Sumit Kumar Ray, and Bernhard Grasemann, eds. Structural Geometry of Mobile Belts of the Indian Subcontinent. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40593-9.

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Oliver, James H. NURBS-based geometry for integrated structural analysis: Final report, grant NAG3-1481. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Saalmann, Kerstin. Geometrie und Kinematik des tertiären Deckenbaus im West-Spitzbergen Falten- und Überschiebungsgürtel, Brøggerhalvøya, Svalbard =: Geometry and kinematics of the West Spitsbergen Fold-and-Thrust belt, Brøggerhalvøya, Svalbard. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 2000.

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Evans, Paul John. Structural geometry of parts of the Ivrea-Verbano lower crustal section, Northern Italy.. Manchester: University of Manchester, 1995.

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Verbeek, Earl R. Geometry and structural evolution of gilsonite dikes in the eastern Uinta Basin, Utah. [Washington]: U.S. G.P.O., 1993.

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Cassinello, Pepa. Geometría y proporción en las estructuras: Ensayos en honor de Ricardo Aroca = Geometry and proportion in structural design : essays in Ricardo Aroca's honour. Madrid]: R.S. Lampreave, 2010.

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Ricardo, Aroca, ed. Geometría y proporción en las estructuras: Ensayos en honor de Ricardo Aroca = Geometry and proportion in structural design : essays in Ricardo Aroca's honour. Madrid]: R.S. Lampreave, 2010.

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Book chapters on the topic "Structural geometry"

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Wattenhofer, Mirjam, Roger Wattenhofer, and Peter Widmayer. "Geometric Routing Without Geometry." In Structural Information and Communication Complexity, 307–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11429647_24.

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Groshong, Richard H. "Fold Geometry." In 3-D Structural Geology, 109–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-31055-6_5.

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Groshong, Richard H. "Fold Geometry." In 3-D Structural Geology, 113–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03912-0_4.

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Millais, Malcolm. "Geometry and structural behaviour." In Building Structures, 158–82. Third edition. | New York : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315652139-7.

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Lachauer, Lorenz, and Toni Kotnik. "Geometry of Structural Form." In Advances in Architectural Geometry 2010, 193–203. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-7091-0309-8_14.

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Malliavin, Thérèse E., Antonio Mucherino, and Michael Nilges. "Distance Geometry in Structural Biology: New Perspectives." In Distance Geometry, 329–50. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5128-0_16.

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Groshong, Richard H. "Direction Cosines and Vector Geometry." In 3-D Structural Geology, 373–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-31055-6_12.

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Zhang, Y., and A. Der Kiureghian. "Reliability Against Fracture with Uncertain Crack Geometry." In Probabilistic Structural Mechanics: Advances in Structural Reliability Methods, 582–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85092-9_38.

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Qin, Bo, and Liyang Xie. "A Study on the Effect of Component Geometry on Fatigue Property." In Structural Integrity, 315–16. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91989-8_67.

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Frkáň, Martin, Gianni Nicoletto, and Radomila Konečná. "As-Built Sharp Notch Geometry and Fatigue Performance of DMLS Ti6Al4V." In Structural Integrity, 75–81. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13980-3_10.

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Conference papers on the topic "Structural geometry"

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Srinivas, Venkat, Inderjit Chopra, and Mark Nixon. "Aeroelastic analysis of advanced geometry tiltrotor aircraft." In 36th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-1454.

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SENER, MURAT, SENOL UTKU, and BEN WADA. "Geometry Control in Prestressed hdaptivc Space Trusses." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1676.

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GANGULI, RANJAN, and INDERJIT CHOPRA. "Aeroelastic optimization of an advanced geometry helicopter rotor." In 33rd Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-2360.

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MUROTSU, YOSHISADA, and SHAOWAN SHAO. "Optimal Adaptive Geometry of an Intelligent Truss Structure." In 31st Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-1093.

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Miki, Mitsunori, Takahiro Koita, and Yoichiro Watanabe. "Parallel computing for analysis of variable geometry truss." In 36th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-1307.

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BIR, GUNJIT, and INDERJIT CHOPRA. "Aeromechanical Stability of Rotorcraft With Advanced Geometry Blades." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1304.

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KODIYALAM, SRINIVAS, VIRENDRA KUMAR, and PETER FINNIGAN. "A constructive solid geometry approach to three-dimensional shape optimization." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1211.

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HOUSNER, J., S. WU, and C. CHANG. "A finite element method for time varying geometry in multibody structures." In 29th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-2234.

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Pauly, Mark, Niloy J. Mitra, Johannes Wallner, Helmut Pottmann, and Leonidas J. Guibas. "Discovering structural regularity in 3D geometry." In ACM SIGGRAPH 2008 papers. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1399504.1360642.

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Grayson, M., and E. Garcia. "Urban Wind: Effects of Structural Geometry." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38658.

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Wind power continues to be produced by large-scale wind farms in remote areas. Supplying urban areas requires that this power be transmitted over vast distances. Generating power locally in urban cities not only decreases transmission distances but reduces external demand by using the harvested energy on site. A crucial element in the use of wind in the built environment as a source of energy is finding ways to maximize its flow. As flow approaches the windward façade of a building’s structure, it is disturbed, causing an increase in velocity both at the roof’s edge and above the separation bubble. Energy harvesting devices are usually placed in this flow region. The aim of this study is to further investigate the accelerated flow by modifying the building’s structure to be a concentrator of the wind, thereby maximizing the available wind power. Using computational fluid dynamics, sloped façades at varying angles were investigated. Simulations show that at an angle of 30°, the velocity is amplified by more than 100% at the separation point directly above the roof’s leading edge. Currently, wind tunnel experiments simulating flow behavior are being conducted and it is expected that analysis of the data will validate and support the findings presented.
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Reports on the topic "Structural geometry"

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Will Windes, Y. Katoh, L.L. Snead, E. Lara-Curzio, and Jr C. Henagar. Status of geometry effects on structural nuclear composite properties. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/911781.

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Ferencz, R., and N. Hodge. Adding a MOAB Geometry Interface to SHARP Structural Mechanics. Office of Scientific and Technical Information (OSTI), May 2012. http://dx.doi.org/10.2172/1043640.

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Anderson, A. V. Variations in structural geometry across the continental divide thrust front, northeastern Brooks Range, Alaska. Alaska Division of Geological & Geophysical Surveys, 1993. http://dx.doi.org/10.14509/1616.

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Nance, R. D., and J. B. Warner. Variscan Tectonostratigraphy of the Mispec Group, southern New Brunswick: Structural Geometry and Deformational History. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120386.

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Anderson, A. V. Relationship between stratigraphy and structural geometry southwest of Bathtub Ridge, northeastern Brooks Range, preliminary results. Alaska Division of Geological & Geophysical Surveys, 1989. http://dx.doi.org/10.14509/1394.

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Homza, T. X. The structural geometry of detachment folds above a duplex in the Franklin Mountains, northeastern Brooks Range, Alaska. Alaska Division of Geological & Geophysical Surveys, 1994. http://dx.doi.org/10.14509/1668.

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Stender, Anthony. Rod-like plasmonic nanoparticles as optical building blocks: how differences in particle shape and structural geometry influence optical signal. Office of Scientific and Technical Information (OSTI), January 2013. http://dx.doi.org/10.2172/1116721.

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Stol, K. A. Geometry and Structural Properties for the Controls Advanced Research Turbine (CART) from Model Tuning: August 25, 2003--November 30, 2003. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/15009598.

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Valette, M., S. De Souza, P. Mercier-Langevin, V. J. McNicoll, P. Grondin-LeBlanc, O. Côté-Mantha, M. Simard, and M. Malo. Lithological, hydrothermal, structural and metamorphic controls on the style, geometry and distribution of the auriferous zones at Amaruq, Churchill Province, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2018. http://dx.doi.org/10.4095/306467.

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Dunsworth, S., T. Calon, and J. Malpas. Structural and Magmatic Controls On the Internal Geometry of the Plutonic Complex and Its Chromite Occurrences in the Bay of Islands Ophiolite, Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120411.

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