Academic literature on the topic 'Flexible structures'

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Journal articles on the topic "Flexible structures"

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Bearman, P. W. "Tall flexible structures." Journal of Wind Engineering and Industrial Aerodynamics 69-71 (July 1997): 129–30. http://dx.doi.org/10.1016/s0167-6105(97)00224-9.

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Maddalena, Francesco, Danilo Percivale, and Franco Tomarelli. "Adhesive flexible material structures." Discrete & Continuous Dynamical Systems - B 17, no. 2 (2012): 553–74. http://dx.doi.org/10.3934/dcdsb.2012.17.553.

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Eversheim, W., P. Kettner, and K. P. Merz. "Planning flexible system structures." Advanced Manufacturing Processes 2, no. 1-2 (January 1987): 189–98. http://dx.doi.org/10.1080/10426918708953187.

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Eversheim, W., P. Kettner, and K. P. Mertz. "Planning flexible system structures." Assembly Automation 6, no. 3 (March 1986): 141–44. http://dx.doi.org/10.1108/eb004201.

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ARAI, Fumihito, and Toshio FUKUDA. "Flexibility control of flexible structures. 3rd Report. Physical parameters identification for flexible structures." Transactions of the Japan Society of Mechanical Engineers Series C 56, no. 532 (1990): 3279–86. http://dx.doi.org/10.1299/kikaic.56.3279.

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Sánchez-Cuenca López, Luis. "Geometría flexible para las estructuras de barras." Informes de la Construcción 45, no. 430 (April 30, 1994): 31–42. http://dx.doi.org/10.3989/ic.1994.v45.i430.1140.

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Pai, P. Frank, and Mark J. Schulz. "Modeling of Highly Flexible Structures." Journal of Spacecraft and Rockets 37, no. 3 (May 2000): 419–21. http://dx.doi.org/10.2514/2.3577.

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Homann, Ulrich, Michael Rill, and Andreas Wimmer. "Flexible value structures in banking." Communications of the ACM 47, no. 5 (May 1, 2004): 34. http://dx.doi.org/10.1145/986213.986234.

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Kalmykova, Anastasiya, and Pavel Kabytov. "“Flexible” Structures of Public Administration." Journal of Russian Law 7, no. 8 (October 20, 2020): 1. http://dx.doi.org/10.12737/jrl.2019.8.10.

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Dennison, W. F. "Flexible Structures and Secondary Schools." Educational Management & Administration 13, no. 1 (January 1985): 29–36. http://dx.doi.org/10.1177/174114328501300105.

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Dissertations / Theses on the topic "Flexible structures"

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Guy, Nicolas. "Modèle et commande structurés : application aux grandes structures spatiales flexibles." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0036/document.

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Dans cette thèse, les problématiques de la modélisation et du contrôle robuste de l’attitude des grandes structures spatiales flexibles sont considérées. Afin de satisfaire les performances de pointage requises dans les scénarios des futures missions spatiales, nous proposons d’optimiser directement une loi de commande d’ordre réduit sur un modèle de validation d’ordre élevé et des critères qui exploitent directement la structure du modèle. Ainsi, les travaux de cette thèse sont naturellement divisés en deux parties : une partie relative à l’obtention d’un modèle dynamique judicieusement structuré du véhicule spatial qui servira à l’étape de synthèse ; une seconde partie concernant l’obtention de la loi de commande.Ces travaux sont illustrés sur l’exemple académique du système masses-ressort, qui est la représentation la plus simple d’un système flexible à un degré de liberté. En complément, un cas d’étude sur un satellite géostationnaire est traité pour valider les approches sur un exemple plus réaliste d’une problématique industrielle
In this thesis, modeling and robust attitude control problems of large flexible space structures are considered. To meet the required pointing performance of future space missions scenarios, we propose to directly optimize a reduced order control law on high order model validation and criteria that directly exploit the model structure. Thus, the work of this thesis is naturally divided into two parts : one part on obtaining a wisely structured dynamic model of the spacecraft to be used in the synthesis step, a second part about getting the law control. This work is illustrated on the example of the academic spring-masses system, which is the simplest representation of a one degree of freedom flexible system. In addition, a geostationary satellite study case is processed to validate developed approaches on a more realistic example of an industrial problem
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Montgomery, Darcy Thomas. "Milling of flexible structures." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29689.

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Current manufacturing research aims at increasing productivity by optimal selection of process parameters. This is accomplished by understanding the fundamental physics of individual manufacturing processes. In this thesis, peripheral milling of very flexible cantilevered plates is studied. The static and dynamic deflections of the plate under periodic milling forces are modelled. A new dynamic cutting force model is developed which considers five discrete zones of relative motion between the tool and the workpiece. The kinematics of both milling and vibratory motions are modelled, which is an original research contribution in this area. It is shown that the penetration of the tool into the workpiece during vibratory cutting has a strong influence on the damping and stiffness characteristics of the milling process. A structural model of a discontinuous cantilevered plate is determined using the finite element method. A reduced order structural model at the tool-workpiece contact zone is implemented for discrete time response analysis of the plate under cutting force excitations during milling. The closed loop dynamic behaviour of the system is modelled and taken into account in the analysis. Simulations of plate machining are compared with experimental results. A model of the surface finish generation mechanism is deduced from the analysis and experimental results. Applications of this research include peripheral milling of integral jet engine impellers, computer disk drives and other flexible mechanical components.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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Villarreal, Seth. "EXAMINING FLEXIBLE BIOLOGICAL STRUCTURES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1414772850.

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Lee, Seung-Yoon. "Geometrically exact modeling and nonlinear mechanics of highly flexible structures /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074421.

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O'Connor, Joseph. "Fluid-structure interactions of wall-mounted flexible slender structures." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/fluidstructure-interactions-of-wallmounted-flexible-slender-structures(1dab2986-b78f-4ff9-9b2e-5d2181cfa009).html.

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The fluid-structure interactions of wall-mounted slender structures, such as cilia, filaments, flaps, and flags, play an important role in a broad range of physical processes: from the coherent waving motion of vegetation, to the passive flow control capability of hair-like surface coatings. While these systems are ubiquitous, their coupled nonlinear response exhibits a wide variety of behaviours that is yet to be fully understood, especially when multiple structures are considered. The purpose of this work is to investigate, via numerical simulation, the fluid-structure interactions of arrays of slender structures over a range of input conditions. A direct modelling approach, whereby the individual structures and their dynamics are fully resolved, is realised via a lattice Boltzmann-immersed boundary model, which is coupled to two different structural solvers: an Euler-Bernoulli beam model, and a finite element model. Results are presented for three selected test cases - which build in scale from a single flap in a periodic array, to a small finite array of flaps, and finally to a large finite array - and the key behaviour modes are characterised and quantified. Results show a broad range of behaviours, which depend on the flow conditions and structural properties. In particular, the emergence of coherent waving motions are shown to be closely related to the natural frequency of the array. Furthermore, this behaviour is associated with a lock-in between the natural frequency of the array and the predicted frequency of the fluid instabilities. The original contributions of this work are: the development and application of a numerical tool for direct modelling of large arrays of slender structures; the characterisation of the behaviour of slender structures over a range of input conditions; and the exposition of key behaviour modes of slender structures and their relation to input conditions.
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Pimm, Andrew James. "Analysis of flexible fabric structures." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12162/.

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This thesis is primarily aimed at carrying out analysis of Energy Bags, reinforced fabric bags used for subsea compressed air energy storage. Subsea compressed air energy storage is a completely new method of large-scale energy storage designed to be integrated with direct-compression offshore wind turbines and wave energy converters. Energy Bags are impermeable bags anchored to the seabed at significant depths (e.g. 500m) in which high pressure air, compressed by specially designed wind turbines and wave energy converters, is stored at pressures roughly equal to the hydrostatic pressure of the surrounding water. Energy Bags do not need to be particularly strong because most of the reaction to the pressure load is provided by the surrounding water, and high energy densities are available at such depths as 500m. This thesis investigates the deformed shapes of Energy Bags and studies optimal designs. Three analysis methods are developed which vary in their complexity, ease of use, and accuracy. First, a system of coupled ordinary differential equations (ODEs) is derived which describes the deformed shape of an axisymmetric Energy Bag. This model is later used in an optimisation study to find the shapes of bag which minimise the cost of materials (reinforcement, fabric, and ballast) per unit of energy stored. Circumferential reinforcement, hanging masses from the inside of the bag (which it was hoped would lower the total cost) and fill level are all included as variables in the optimisation, and it is found that for reasonable materials costs an Energy Bag could cost less than £10,000/MWh when anchored at 500m. This compares favourably with all other methods of large-scale energy storage. However, the bags used in the optimisation study have wide bases, which will require sealing against the seabed (unless water is to be allowed into the bags). Problems are encountered when trying to use the ODE method to find the shapes of partially inflated bags, and it is generally not very easy to use. Next, we carry out finite element analysis (FEA) of an axisymmetric Energy Bag using cable elements. This is much more user-friendly and flexible than the ODE method. Partially inflated bag shapes are found, and pressure-volume curves are presented which show the almost isobaric performance of an Energy Bag. It is found that material mass limits the extent to which the bag can be deflated before it becomes unstable. The axisymmetric FEA is used to study bags with much more realistic circumferential reinforcement than the ODE method, and we also look at bags with an unsealed base, which allow water in through the base as they deflate. A three-dimensional FEA tool is presented which models an Energy Bag as a cable-reinforced membrane using cable and membrane elements, and special measures had to be taken to deal with wrinkling. We assume that the bag is rotationally symmetric, comprising a number of symmetric lobes. The 3D FEA is used to find the stress distribution in the membrane of the bag, however a converged solution cannot always be found. It is not certain why this is the case but it is anticipated that it is because deformed bags are not always rotationally symmetric. The 3D FEA could also be used to model other membrane structures such as balloons, parachutes, roofs and sails, as well as nets. The standard cutting patterns for lobes in lobed balloons are analysed, and a new cutting pattern known as the Constant Tension lobe is generated. This is an extension of the Constant Radius lobe and takes into account the pressure gradient found in both air and water, minimising waste material. The Constant Tension lobe is particularly appropriate for Energy Bags because of the large pressure gradient in water. The Ultra High Performance Vessel architecture is also presented, upon which the design of the prototype Energy Bags is based. The fabric structure of an Ultra High Performance Vessel comprises only two sheets of fabric (rather than many separate lobes welded together), and tendon shortening and “bellows” serve to ensure that there is no meridional stress in the fabric. An analytical optimisation is used to show that the zero pressure bag that minimises cost of materials per unit of energy stored has equal costs of reinforcement and membrane. The axisymmetric FEA is also used to find the optimum bag size and maximum fill level for a bag which comes down to a single point at the base (as opposed to a wide base bag). Finally, testing of two 1.8m diameter superpressure Energy Bags has been commenced during the course of this work, and the prototypes and test rig are documented in this thesis. The prototypes were manufactured for us by Thin Red Line Aerospace Ltd., a Canadian manufacturer of deployable fabric structures for use in space. They are being cycled back-to-back in order to prove the concept, assess the performance of an Energy Bag over time, and identify any problems that need to be addressed. One of the bags had a few small leaks from the moment it was first inflated, but the other has remained airtight to date. It was found that if an Energy Bag is to be airtight, special attention must be paid to the welds at the seams and the sealing around the airline fittings.
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Vlajic, Nicholas A. "Dynamics of slender, flexible structures." Thesis, University of Maryland, College Park, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3628601.

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Dynamics of slender beam-like structures subjected to rotational motions is studied experimentally, numerically, and analytically within this dissertation. As the aspect ratio of beam-like structures is increased (i.e., as the structures become slender), the structure can undergo large elastic deformations, and in addition, the torsional and lateral motions can be strongly coupled. Two different paradigms of rotor systems are constructed and used to investigate coupled torsional-lateral motions in slender rotating structures. The first rotor model is a modified version of the classical Jeffcott rotor, which accounts for torsional vibrations and stator contact. Analysis and simulations indicate that torsional vibrations are unlikely to exist during forward synchronous whirling, and reveal the presence of phenomena with high-frequency content, such as centrifugal stiffening and smoothening, during backward whirling. The second rotor model is a nonlinear distributed-parameter system that has been derived with the intent of capturing dynamics observed in an experimental apparatus with slender, rotating structures. Nonlinear oscillations observed in the experiments contain response components at frequencies other than the drive speed, a feature that is also captured by predictions obtained from the distributed-parameter model. Further analysis of the governing partial-differential equations yields insights into the origins (e.g., nonlinear gyroscopic coupling and frictional forces) of the nonlinear response components observed in the spectrum of the torsion response. Slender structures are often subject to large deformations with pre-stress and curvature, which can drastically alter the natural frequencies and mode shapes when in operation. Here, a geometrically exact beam formulation based on the Cosserat theory of rods is outlined in order to predict the static configuration, natural frequencies, and mode shapes of slender structures with large pre-stress and curvature. The modeling and analysis are validated with experiments as well as comparisons with a nonlinear finite element formulation. The predictions for the first eight natural frequencies are found to be in excellent agreement with the corresponding experimentally determined values. The findings of this dissertation work have a broad range of applications across different length scales, including drill strings, space tethers, deployable structures, cable supported structures (e.g., bridges and mooring cables), DNA strands, and sutures for non-invasive surgery to name a few.

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Orr, John. "Flexible formwork for concrete structures." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566135.

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Concrete, our most widely used construction material, is a fluid that offers the opportunity to economically create structures of almost any geometry. Yet this unique fluidity is seldom capitalised on, with concrete instead being cast into rigid prismatic moulds to create high material use structures with large carbon footprints. Our rate of concrete consumption means that cement manufacture alone is estimated to account for some 5% of global Carbon Dioxide emissions. This dissertation shows that by replacing conventional orthogonal moulds with a flexible system comprised primarily of high strength, low cost fabric sheets, the fluidity of concrete can be utilised to create structurally optimised concrete structures. Flexible formwork therefore has the potential to facilitate the change in design and construction philosophy that will be required for a move towards a less material intensive, more sustainable, construction industry. Optimisation and design processes developed in this thesis show that material savings of up to 40% are possible in flexibly formed concrete beams. Full scale structural testing of these processes is undertaken to verify the flexural and shear behaviours of non-prismatic elements. This is supported by further experimental and theoretical investigations into the durability of concrete cast in a permeable, flexible mould. Detailed analysis is provided alongside practical guidance for designers. Coupled with innovation in design and analysis techniques, flexible formwork is shown to provide a globally accessible method for the construction of low carbon, materially efficient and architecturally interesting concrete structures. Recognising the impact construction has on the environment, design philosophies centred around the need to put material where it is required are becoming increasingly desirable. This can now be achieved by replacing rigid formworks with systems comprised of flexible sheets of fabric. This is a step change in the way we think about our new concrete structures.
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Hoberg, Theresa B. (Theresa Blinn). "Capillary flows in flexible structures." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81604.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 73-75).
Interactions between capillary and elastic effects are relevant to a variety of applications, from micro- and nano-scale manufacturing to biological systems. In this thesis, we investigate capillary flows in extremely flexible, millimeter-scale cylindrical elastic tubes. We demonstrate that surface tension can cause sufficiently flexible tubes to collapse and coalesce spontaneously through non-axisymmetric buckling, and develop criteria for the initial deformation and complete collapse of a circular tube under capillary pressure. Experimental results are presented for capillary rise and evaporation of a liquid in a flexible tube. Several regimes are seen for the equilibrium state of a flexible tube under capillary pressure, and deformations of the tube walls are measured in different regimes and compared with a shell theory model. Good agreement is found between experiments and theory overall. Analysis and experimental results show that despite the complex and non-axisymmetric deformed shapes of cylindrical structures, the elastocapillary length used in previous literature for flat plates and sheets can also apply for flexible tubes, if the tube radius is used as the characteristic length scale.
by Theresa B. Hoberg.
S.M.
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Cui, Yuefeng. "Adaptive multistable flexible composite structures." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/25513.

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A composite laminate with unsymmetric layup may exhibit two distinct stable configurations at room temperature due to the residual thermal stresses imparted during curing. This bistability leads unsymmetric composite laminates to be good candidates for adaptive flexible structures in particular for the fields of aerospace and aircraft. To extend the application potential of bistable composite laminates, the multistable behaviour of continuous compound composite surfaces are investigated. Two connection approaches are presented in this research. By tailoring the asymmetric bistability of indi- vidual composite elements, continuous surfaces composed of series-connected bistable composite shells demonstrate a high degree of multistability. This model can be developed to design longer composite surfaces possessing more stable shapes. In addition, a high degree of multistability is achieved by connecting square composite elements in a tessellated feature. By reducing the interactions between adjacent elements, a tessellated surface composed of n bistable elements shows a theoretical maximum 2n stable shapes. Finally, potential applications of highly multistable composite surfaces are introduced. The proposed multistable designs improve the flexible functionality of the adaptive structures.
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Books on the topic "Flexible structures"

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1960-, Morris K. A., and Fields Institute for Research in Mathematical Sciences., eds. Control of flexible structures. Providence, R.I: American Mathematical Society, 1993.

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Gawronski, Wodek. Balanced control of flexible structures. London: Springer, 1996.

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Zoléesio, J. P., ed. Stabilization of Flexible Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005143.

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Fred, Janes, and Further Education Staff College, eds. Managing flexible college structures. Bristol: Further Education Staff College, 1989.

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Peter, Gartside, and Further Education Staff College, eds. Managing flexible college structures. Bristol: Further Education Staff College, 1990.

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Havard, Bob. Managing flexible college structures. Edited by Kershaw Noel, Janes Fred, and Further Education Staff College. Bristol: Further Education Staff College, 1989.

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Britvec, S. J. Stability and optimization of flexible space structures. Basel: Kirkhäuser Verlag, 1995.

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1925-, Ryan Robert S., Scofield Harold N, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, eds. Structural dynamics and control interaction of flexible structures. [Washington, D.C.]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1987.

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Gawronski, Wodek, ed. Balanced Control of Flexible Structures. London: Springer-Verlag, 1996. http://dx.doi.org/10.1007/bfb0034387.

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Gawronski, Wodek, ed. Balanced Control of Flexible Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-76017-2.

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Book chapters on the topic "Flexible structures"

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Gawronski, Wodek. "Flexible structures." In Balanced Control of Flexible Structures, 7–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3540760172_2.

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Calchand, Nandish R., Arnaud Hubert, Yann Le Gorrec, and Hector Ramirez Estay. "Structured Energy Approach for the Modeling of Flexible Structures." In Flexible Robotics, 73–113. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118572016.ch3.

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Saliklis, Edmond. "Flexible Diaphragms." In Structures: A Studio Approach, 159–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33153-5_7.

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Grossard, Mathieu, Mehdi Boukallel, Stéphane Régnier, and Nicolas Chaillet. "Design of Integrated Flexible Structures for Micromanipulation." In Flexible Robotics, 1–35. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118572016.ch1.

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Grossard, Mathieu, Arnaud Hubert, Stéphane Régnier, and Nicolas Chaillet. "Flexible Structures' Representation and Notable Properties in Control." In Flexible Robotics, 37–72. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118572016.ch2.

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Cioranescu, Doina, and Jeannine Saint Jean Paulin. "Mathematical study of large space structures." In Stabilization of Flexible Structures, 6–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005145.

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Truchi, C. "Adaptive optics — Shape control of an adaptive mirror." In Stabilization of Flexible Structures, 28–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005147.

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Conrad, F., J. Leblond, and J. P. Marmorat. "Energy decay estimates for a beam with nonlinear boundary feedback." In Stabilization of Flexible Structures, 46–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005148.

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El Jai, A. "Actuators and controllability of distributed systems." In Stabilization of Flexible Structures, 109–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005150.

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Da Prato, Giuscppe, and Michel Delfour. "Linear quadratic control problem without stabilizability." In Stabilization of Flexible Structures, 126–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/bfb0005151.

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Conference papers on the topic "Flexible structures"

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BABUSKA, VIT, and ROY CRAIG, JR. "SUBSTRUCTURE-BASED CONTROL OF FLEXIBLE STRUCTURES." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1671.

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GAWRONSKI, WODEK, and TREVOR WILLIAMS. "Model reduction for flexible space structures." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1339.

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CREAMER, NELSON, and JOHN JUNKINS. "An identification method for flexible structures." In 28th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-745.

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Sunar, M., and M. Sunar. "Thermopiezoelectricity in control of flexible structures." In 38th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1031.

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PADILLA, CARLOS, and ANDREAS VON FLOTOW. "Further approximations in flexible multibody dynamics." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1115.

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HOPKINS, A., and PETER LIKINS. "Analysis of structures with rotating, flexible substructures." In 28th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-951.

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Oueini, Shafic, Ali Nayfeh, Shafic Oueini, and Ali Nayfeh. "Multimode control of flexible structures using saturation." In 38th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1207.

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BINDEMANN, ALAN, and ALDO FERRI. "Large-amplitude vibration of jointed flexible structures." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1224.

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KOZIN, F. "Stability of flexible structures with random parameters." In 26th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-633.

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Djokikj, Jelena, and Jovana Jovanova. "DfAM of Nonlinear Cellular Flexible Structures." In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5673.

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Abstract Nonlinear cellular structures are defined as structures with multiple scale unit cells patterned through the volume of the structure. The geometrical nonlinearity allows local high flexibility in the movement and also in the sense of strength of materials. The focus of this paper is to create a framework for design for additive manufacturing (DfAM) of a modular nonlinear cellular structure with high level of flexibility. The flexibility will be exploited in skin-like structures adaptable to freeform geometries or utilize flat printed designs for voluminous and structural 3D shapes. For the modeling of the structure CAD software is used and for the fabrication of the structure additive manufacturing (AM) is applied. These technologies work by adding the material in layers, which enables fabrication of parts with complex geometries. The working principal of AM which is opposite to the traditional manufacturing requires for changes in the design process. These changes are applied in the DfAM that we are presenting with this study. The DfAM is used to develop a systematic design approach to support the fabrication of unique structure shapes by AM.
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Reports on the topic "Flexible structures"

1

Jeffrey, Frank. Flexible Photovoltaics for Fabric Structures. Fort Belvoir, VA: Defense Technical Information Center, June 2001. http://dx.doi.org/10.21236/ada395283.

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2

Bennett, W. H., G. L. Blankenship, and H. G. Kwatny. Modeling and Control of Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, December 1986. http://dx.doi.org/10.21236/ada177106.

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3

Moon, Francis C., Peter Gergely, James S. Thorp, and John F. Abel. Nonlinear Dynamics and Control of Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada208120.

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4

Hughes, Declan, and John T. Wen. Passivity Motivated Controller Design for Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada261122.

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5

Nayfeh, Ali H., and Dean T. Mook. The Effect of Nonlinearities on Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, February 1990. http://dx.doi.org/10.21236/ada222705.

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6

Von Flotow, Andreas H. Research into Traveling Wave Control in Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, June 1990. http://dx.doi.org/10.21236/ada224504.

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7

Mukherjee, Ranjan, and Steven W. Shaw. Improved Control Authority in Flexible Structures Using Stiffness Variation. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada425857.

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8

Mukherjee, Ranjan, and Steven W. Shaw. Improved Control Authority in Flexible Structures Using Stiffness Variation. Fort Belvoir, VA: Defense Technical Information Center, June 2007. http://dx.doi.org/10.21236/ada473600.

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9

Cannon, Robert H., Rock Jr., Ballhaus Stephen M., Wilson Bill, and Ed. High-Performance Control of Multi-Link Flexible Articulated Space Structures. Fort Belvoir, VA: Defense Technical Information Center, July 1993. http://dx.doi.org/10.21236/ada268857.

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10

Stech, Daniel J. H2 Approach for Optimally Tuning Passive Vibration Absorbers to Flexible Structures. Fort Belvoir, VA: Defense Technical Information Center, January 1994. http://dx.doi.org/10.21236/ada280521.

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