Tesis sobre el tema "Space trusse"
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PEREIRA, ANDERSON. "RELIABILITY BASED OPTIMIZATION: APPLICATION TO SPACE TRUSSES". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10641@1.
Texto completoGRUPO DE TECNOLOGIA DE COMPUTAÇÃO GRÁFICA - PUC-RIO
No projeto de estruturas de engenharia há, freqüentemente, incertezas associadas µas propriedades dos materiais, nas propriedades geométricas e aos carregamentos. A maneira mais comum e tradicional para se levar em conta estas incertezas é através da definição dos valores de projeto como o resultado do produto do valor característico das variáveis aleatórias por um fator parcial de segurança. Esta solução, no entanto, falha ao não permitir a quantificação da confiabilidade do projeto ótimo uma vez que um fator grande de segurança pode não significar uma confiabilidade mais alta. Para se considerar a natureza probabilística de quantidades como propriedades dos materiais, carregamentos, etc., tem-se que identificar e definir estas quantidades como variáveis aleatórias no modelo de análise. Desta maneira, a probabilidade de falha (ou a confiabilidade) de uma estrutura sujeita a uma restrição de desempenho na forma de uma função de estado limite pode, então, ser calculada e formulada como uma restrição num problema de otimização. Neste trabalho, restrição probabilísticas são incorporadas ao esquema tradicional de otimização estrutural. A formulação e os métodos numéricos para este processo, comumente chamado de otimização baseada em confiabilidade, são descritos. O objetivo principal é apresentar um sistema computacional capaz de resolver problemas de otimização de forma e de dimensões de treliças espaciais baseado em confiabilidade. Podem ser consideradas como variáveis, determinísticas ou aleatórias, as seções transversais, as coordenadas nodais, as propriedades dos materiais (módulo de elasticidade e tensão de escoamento) e os carregamentos. De maneira a tratar os problemas de instabilidade global são considerados os efeitos da não-linearidade geométrica no comportamento da estrutura e uma restrição formulada para uma função de estado limite associada na carga de colapso é incluída. Funções de estado limite referentes aos deslocamentos e nas tensões também são consideradas. A flambagem global das barras é considerada por meio da carga crítica de Euler
Uncertainties associated with random variables, such as, the material proprieties and loads, are inherent to the design of structures. These uncertainties are traditionally taken into account in the project before the design by defining design values for the random variables. The design values of the random variables are obtained from statistical properties of the random variables and from partial safety factors. Once these values are defined the variables are treated as deterministic variables in the design process. This approach has been followed in the conventional design optimization and in many design codes such as the Brazilian code for the design of steel and concrete structures. This simple approach, however, does not allow an estimate of the structural reliability of the resulting project which may have a low (unsafe structure) or a very high (expensive structure) reliability. To overcome this problem a reliability analysis must be incorporated into the traditional design optimization. Design optimization, incorporating reliability analyses, has been denoted Reliability-Based Design Optimization (RBDO). In RBDO, the constraints are defined in terms of the probabilities of failure associated with some prescribed failure functions and therefore, it requires, as in the reliability analysis, the definition of the random variables and information about their statistical properties. In this work, RBDO is applied to the shape and sizing optimization of spatial trusses considering geometric nonlinearities. The constraints considered in the RBDO problem are related to the following failure mechanisms: to the global collapse (limit load), to local buckling and yield stress and to serviceability conditions (displacement bounds). The algorithms used for solving the optimization problem and for performing the reliability analysis are described.
Navarro, Cota Juan Pedro Martin 1963. "DESIGN AND BEHAVIOR OF COMPOSITE SPACE TRUSSES". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276505.
Texto completoSahol, Hamid Yazmin. "Progressive collapse of double layer space trusses". Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/808321/.
Texto completoNguyen, Thu Ngoc 1967. "Design optimization of a space truss structure". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/46133.
Texto completoMupona, Gaylord Tonderai. "Development of space truss systems in timber". Thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/6712.
Texto completoPugh, James Christopher. "A user friendly preprocessor for plane and space frames and space trusses". Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44655.
Texto completoA user friendly preprocessor was developed and documented for the plane and space frame and space truss structural analysis programs that are based on the matrix displacements method. This preprocessor is comprised of three programs. The main program in the preprocessor is to allow the user to create error free input data files. This program also allows modifications of existing input data files. The two other programs are the library manager and the graphics presentation. The library manager is used to manage the libraries of the element and material properties. The graphics presentation is used to display a plane structure on the graphics display. In Chapter 2, the development of a user friendly preprocessor is discussed. After a short review of the extension of the analysis program from plane frame to space frame in Chapter 3, the preprocessor and its supporting programs are described in detail in the user manual in Chapter 4. Possible extensions to the preprocessor are discussed in Chapter 5. The appendix contains examples of input data files for these structural analysis programs.
Master of Science
Parke, Gerard Andrew. "The behaviour of space trusses incorporating novel compression members". Thesis, University of Surrey, 1988. http://epubs.surrey.ac.uk/934/.
Texto completoHowells, Hugh Alan. "Collapse behaviour of space trusses with thin-walled members". Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/1038/.
Texto completoYates, Keith William. "Optimization of slender space trusses utilizing a continuum model". Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-11242009-020159/.
Texto completoAndberg, Brent K. "Modal testing and analysis of the NPS Space Truss". Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8683.
Texto completoThis thesis deals with modal testing and analysis of the Naval Postgraduate School (NPS) Space Truss. A finite element model (FEM) was developed for the truss using a MATLB program called NRLFEMI (developed at the Nava1 Research Laboratory). Analytical predictions of the natural frequencies for this 3.76 meter by 0.35 meter precision structure were calculated using the NRLFEMI code. These calculated natural frequencies were then compared to experimental data collected during modal testing of the truss in the NPS dynamics and Control Laboratory. Through analysis, the predicted results of the measurements (from the FEM) were satisfactorily correlated to the experimentally obtained results, validating the FEM program. Additionally, a technology demonstration of Fiber Bragg Grating Sensors (FBGSs) was performed. These laser etched, fiber optic sensors are ideally suited for real time evaluation of load, strain, vibration, and other health monitoring functions of structures
Lovejoy, Vincent Dean. "Dynamics and control of a planar truss actuator". Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/52056.
Texto completoMaster of Science
Isildak, Murat. "Use Of Helical Wire Core Truss Members In Space Structures". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610553/index.pdf.
Texto completoHeath, Marcus R. A. (Richard Austin). "Dynamic behavior of a three dimensional aluminum truss in free space". Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37525.
Texto completoIncludes bibliographical references (leaf 72).
by Marcus R.A. Heath.
M.S.
Webster, Mark S. (Mark Stephen). "Modeling beam-like space trusses with nonlinear joints with application to control". Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/43155.
Texto completoTitle as it appears in the June 1991 M.I.T. Graduate List: A method for modeling beam-like space trusses with nonlinear joints with application to control design and analysis.
Includes bibliographical references (leaves 150-152).
by Mark S. Webster.
Ph.D.
Mwakali, Jackson Aarali. "The collapse behaviour of double-layer space trusses incorporating eccentrically loaded tee-section members". Thesis, University of Surrey, 1990. http://epubs.surrey.ac.uk/756/.
Texto completoJohnson, Scott E. Vlattas John. "Modal analysis and active vibration control of the Naval Postgraduate School Space Truss /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA350137.
Texto completoThesis advisor(s): Brij N. Agrawal, Gangbing Song. Includes bibliographical references (p. 115-118). Also available online.
Pantling, Carey M. "Active vibration control method for space truss using piezoelectric actuators and finite elements". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA374451.
Texto completo"December 1999". Thesis advisor(s): Young S. Shin, Brij N. Agrawal. Includes bibliographical references (p. 105-107). Also available online.
Johnson, Scott E. y John Vlattas. "Modal analysis and active vibration control of the Naval Postgraduate School Space Truss". Thesis, Monterey, California. Naval Postgraduate School, 1998. http://hdl.handle.net/10945/8682.
Texto completoThis thesis examines active control of the Naval Postgraduate School (NPS) Space Truss using a piezoceramic stack actuator. Preceding the development of an active control mechanism for the NPS space truss, modal testing was performed to identify the modal properties of the truss. An impact hammer provided excitation to the truss and accelerometers easured the truss' response. Two data acquisition systems were used independently to gather and analyze data. For active control, an active strut, consisting of a piezoceramic stack, a force transducer, and mechanical interfaces, was substituted in place of a critical diagonal strut and acted as a control actuator. The frequency response of the system was determined and a integral plus double-integral force feedback control law was designed and implemented. A linear proof mass actuator was employed to excite one of the truss' vibrational modes. The controller then suppressed the vibration along the length of the structure resulting in power attenuation on the order of 10- 15 dB. Various combinations of velocity and position feedback gains were investigated in order to optimize the control action. Additional testing was performed to determine the controller's sensitivity over a frequency band.
Sebastian, Wendel Michael. "The performance of a composite space truss bridge with glass reinforced plastic panels". Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/272273.
Texto completoElyada, Dov Babcock Charles D. "Structural analysis of imperfect three-legged truss columns for large space structures applications /". Diss., Pasadena, Calif. : California Institute of Technology, 1985. http://resolver.caltech.edu/CaltechETD:etd-11182004-161353.
Texto completoBarney, Timothy A. "Adaptive Multi-Layer LMS controller design and its active vibration suppression on a Space Truss". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA392845.
Texto completoThesis advisors, Young S. Shin, Brij N. Agrawal. Includes bibliographical references (p. 115-116). Also Available online.
Ma, Jie. "A new space-time finite element method for the dynamic analysis of TRUSS-type structures". Thesis, Edinburgh Napier University, 2015. http://researchrepository.napier.ac.uk/Output/9165.
Texto completoMallik, Wrik. "Aeroelastic Analysis of Truss-Braced Wing Aircraft: Applications for Multidisciplinary Design Optimization". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71650.
Texto completoPh. D.
Daniels, Joseph A. "Securitizing spectacle : property, real estate investment trusts, and the financialization of retail space in Singapore". Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55203.
Texto completoArts, Faculty of
Geography, Department of
Graduate
Heaton, Tyler DeVoe. "Cloud Based IP Data Management Theory and Implementation for a Secure and Trusted Design Space". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu155498721009978.
Texto completoMarzette, Russell K. Jr. "A Feasibility Study of Thin-Shell Deformable Mirrors with Adaptive Truss Support for Spaced-Based Telescopes". Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/16214.
Texto completoElabd, Maher Mostafa Abdel-Hakeem. "Effect of composite action on the dynamic behaviour of space structures". Thesis, University of Dundee, 2010. https://discovery.dundee.ac.uk/en/studentTheses/99b1ba2d-af1e-4c64-b184-f9f52afcf722.
Texto completoSouza, Alex Sander Clemente de. "Análise teórica e experimental de treliças espaciais". Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-11102003-164954/.
Texto completoThis paper presents a study of the behavior of tubular circular section space trusses with the main emphasis placed on the performance of the various truss typologies used in Brazil. Nine space trusses with plan dimensions of 7.5m x 15.0m and one with plan dimensions of 7.5mx7.5m and height of 1.5m were tested. The joint type was varied with the objective to characterize and compare the behavior of the more common types of connection systems (typical node stamped end, steel node, and end plate node). The theoretical analysis employing finite elements was adopted mainly to ascertain the validity of various numerical models commonly employed and hence refining them by including the some basic characteristics of the observed structural behavior.The numerical analysis employed was based on two methodologies: a global structural analysis that takes into account the effects of non-linearity, eccentricities at connection, and the variation of the end bars cross section. In this manner the actual behavior of the tested trusses was well represented. The analysis of the behavior of a typical node, modeled using tri-dimensional finite shell elements made it possible to analyze the interaction between bars that converge at the nodal region by applying contact elements. Despite it simplicity, predicted results of the collapse mode obtained by using the proposed model, very well reproduce the experimental observation.
Maiola, Carlos Henrique. "Análise teórica e experimental de treliças metálicas espaciais constituídas por barras com extremidades estampadas". Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-11122017-113502/.
Texto completoIn Brazil the use of tubular bars with stamping extremities is common in space steel structures, as it means a significant reduction of cost, when caompared with more elaborete system, due to its simplicity of manufacture and assembly. However it is apparently an uncertain system from a structural point of view, which requires studies establishing safe utilization criteria. This paper presents theorical and experimental analysis of this structures. The usual constructive situation of space structure with \'nós típicos\' (bars with flattened ends, superposed and connected by a unique bolt), and \'nós de aço\' (connection system formed by a piece with steel fin welded) was studied. The experimental results were obtained in tests of four prototypes which simulated a section of space structure composed of a mesh squareon- square, with nine 2.5 x 2.5 x 1.5 (m) pyramidal modules, totaliing a structure with 7.5 x 7.5 x 1.5 (m) dimensions, supported by columns in their vertices, permiting to compare the stiffness, the failure manner and the resistance of this prototypes. The theorical analysis of prototypes was carried out by assuming the cases of linearity and physical and geometric non-linearity, taking into consideration the variation of stiffness of the bars next to the nodes.
Magalhães, João Ricardo Maia de. "Sobre o projeto e a construção de estruturas metálicas espaciais". Universidade de São Paulo, 1996. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-29052018-104659/.
Texto completoIn this work, some structural and constructional aspects of metal space structures are presented. lnitially, a brief review of this structural system is described together with some general informations about classifications, types and applications of usual systems. In addition, some aspects about structural analysis are discussed, presenting a brief guide for a space truss design. Finally, some theoretical and experimental results are illustrated for a case of axial compression members with variable stiffness.
Souza, Alex Sander Clemente de. "Contribuição ao estudo das estruturas metálicas espaciais". Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-26022018-134729/.
Texto completoThis work presents a study of space steel structures including the following aspects: history and development, types, advantages of three-dimensional system and structural behaviour. It is given special attention to the most common types of space trusses in Brazil, composed of tubular sections bars with flattened ends. The influence of the variable stiffness on each element\'s behaviour (compressive strength) and on the global structural behaviour has been studied with the use of finite elements. Various patent connection systems used in other countries and those commonly used in Brazil are described. Experimental and theoretical results of a 7,5 m-long by 7,5 m-wide space truss are presented. In the theoretical analysis, variable stiffness and effects of geometrical non-linearity have been considered. Still applying the above considerations, larger space truss models have been also analysed.
Walker, Rebecca. "My older brother's tree : everyday violence and the question of the ordinary in Batticaloa, Eastern Sri Lanka". Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4092.
Texto completoSouza, Arnaldo Nascimento de. "Análise do projeto de estruturas metálicas espaciais: ênfase em coberturas". Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-30032016-143559/.
Texto completoThe roofing space steel structures have differentiated aspects of design. There are many types of arrangements to these structures, and the choice is associate, among other factors, with the shapes e dimensions of the boundary, with the points of support and with the connection systems employed. In this work was analysed the design of these structures, including the historical aspects, the connection systems, the structural behaviour, the particulars aspects of the design, and a numerical analysis of differents arrangements. Twenty seven square structures (66 m x 66 m) and six rectangular structures (186 m x 66 m) were analysed, all them with 60 m span, and variations in the amount and position of supports, in the member arrangement, in the depth and in the node spacing. These structures were analysed adopting the ideal truss model with elastic linear behaviour. With the results were made a comparison between the arrangements that reports these aspects: amount of nodes and members, material consumption, displacements, support reactions and internal forces. The factor that caused the biggest influence in the behaviour of the space structures analysed was the amount and position of supports.
Shanmuga, Sundaram Prassanna. "Development of a FPGA-based True Random Number Generator for Space Applications". Thesis, Linköping University, Electronics System, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54534.
Texto completoRandom numbers are required for cryptographic applications such as IT security products, smart cards etc. Hardwarebased random number generators are widely employed. Cryptographic algorithms are implemented on FieldProgrammable Gate Arrays (FPGAs). In this work a True Random Number Generator (TRNG) employed for spaceapplication was designed, investigated and evaluated. Several cryptographic requirements has to be satisfied for therandom numbers. Two different noise sources was designed and implemented on the FPGA. The first design wasbased on ring oscillators as a noise source. The second design was based on astable oscillators developed on a separatehardware board and interfaced with the FPGA as another noise source. The main aim of the project was to analyse theimportant requirement of independent noise source on a physical level. Jitter from the oscillators being the source forthe randomness, was analysed on both the noise sources. The generated random sequences was finally subjected tostatistical tests.
Rådestad, Sofie. "Engagement in urban planning as a consequence of trust : an explorative study of the Slussen redevelopment project opposition". Licentiate thesis, KTH, Urbana och regionala studier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-197073.
Texto completoQC 20161129
Aydincilar, Yilmaz. "Optimum Design Of Double-layer Grid Systems: Comparison With Current Design Practice Using Real-life Industrial Applications". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612262/index.pdf.
Texto completoWilkins, Nathan Allen. "Signal Subspace Processing in the Beam Space of a True Time Delay Beamformer Bank". Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1433034139.
Texto completoIzydorczyk, Jacek. "Analiza niejednorodnej linii transmisyjnej w środowisku SPICE". Praca habilitacyjna, Wydawnictwo Politechniki Śląskiej, 2010. https://delibra.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=1057.
Texto completoGilbreth, Tarah. "The Mall Ain’t Dead Yet! An Aristotelian argument for the continuation of physical retail space with the rise of modern technology". Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/cmc_theses/1811.
Texto completoLyytinen, Eveliina. "Spaces of trust and mistrust : Congolese refugees, institutions and protection in Kampala, Uganda". Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:bfe1f36a-6a8d-4d89-a6e6-05b0d7bbab4c.
Texto completoSchneider, Irena Maryann. "Political trust, corruption and economic development in the former Soviet space". Thesis, King's College London (University of London), 2018. https://kclpure.kcl.ac.uk/portal/en/theses/political-trust-corruption-and-economic-development-in-the-former-soviet-space(91add960-ecb2-4e6c-b120-c7227deffccc).html.
Texto completoKlein, Maria Isabel Pezzi. "Espaço público e cidadania : autoridade, confiança e compromisso". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/142893.
Texto completoThe thesis is a careful thought about the political, social and legal system of our western democracies. It shows how we need, as soon as possible, to make na anthropological overturn, like an alternative to get over the immeasurable crisis we are suffering now. In this task, we are supported by Hannah Arendt’s political philosophy. This wonderful thinker taught that we need to treat the others like equals. At least, if we want to build a human life in the world with a real public space where the political action can happen. If animal laborans keeps the control over the public arena, it will not be a truly public sphere, but only a place where private activities are showed. We will get over the problems if we realize that violence destroys the power and the authority. So, we need to rescue the citizen’s trust and the compromise between the Government and people. It is a real change in the anthropological perspective that deeply affects the political, legal and social orders. Aninal laborans gets out of the public scene. He is replaced by a lovely newcomer: zôon politikón, who lives a truly Human Condition. Actually, he lives in a democratic society in which citizens have access to political debate and can themselves be heard in it. He knows that only in this special place, where we are together, a sphere of open and free discussion is possible. The public space is the place where exists the much-needed trust and the common consent of citizens for build and do work the political and legal orders. We outline a historical retrospect scenery of the western political organizations and their public spheres in order to point out the evolution that happened in the societies in face of the several political, legal and social facts that permeated the last centuries. Especially, we emphasize the effects and consequences of that facts in the citizens’s behavior and citizen’s understanding. We consider that it is quite indispensable to enable and improve the legal reasoning, especially the pratical reasoning, because we believe that the human understanding is the other side of our capacity of action. In this way, we defend the great value of legal reasoning for active citizenship. Actually, we believe in this alternative to recover the ethical, legal and political density of public space, legitimating its rules.
Komori-Glatz, Miya. ""Cool my doubt is erased": constructive disagreement and creating a psychologically safe space in multicultural student teamwork". De Gruyter, 2018. http://dx.doi.org/10.1515/jelf-2018-0012.
Texto completoEdelholm, Nike. "Exploring Spaces of Not Knowing : an Artist View". Thesis, Konstfack, IBIS - Institutionen för bild- och slöjdpedagogik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-7000.
Texto completoMorterolle, Sébastien. "Etude de structures légères déployables pour applications spatiales". Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20155/document.
Texto completoThe growing needs in telecommunications require the development of large parabolic reflectors. A new conceptual design for the architecture of a deployable antenna is therefore proposed in partnership with the CNES. The design of its framework is based on a review of solutions which leads to scissor mechanisms associated with flexible joints. Numerical modelings with finite elements are first developed to simulate the deployment by the release of the energy stored in the joints after the folding. An experimental prototype with a gravity compensation device is then realized. Tests and measurements are performed to characterize the static and dynamic behavior and compared with the results of simulations. Shaping of the reflective surface by a net of cables is then studied. A new form-finding method for obtaining a net with a uniform tension is then proposed. It is applied to different parabolic typologies of nets and the error due to surface faceting is evaluated. The process of net attachment on the antenna rim structure is also treated
Kačírek, Michal. "Sportovní hala". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372294.
Texto completoBadár, Tomáš. "Výstavní pavilon". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392108.
Texto completoSampaio, Taís Santos. "Análise numérica, via MEF, de ligações em treliças metálicas espaciais". Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20042007-164026/.
Texto completoSpace trusses have been very frequently used in many applications, but its main employment is as roofs of great areas. Recently, many accidents have been occurring with this type of structure, mainly because of a series of adopted design assumptions, which does not fit reality. In this context, the behavior of this type of structure was studied. This study presents a theoretical analysis, using finite element method, of space trusses composed by circular tubular sections. It has as an objective to verify the behavior of each connection system, modeled in 3D by shell finite elements, associated to a space truss, modeled in linear finite elements. The usual typology of connections used in this kind of structure was studied, considering the problems caused by peculiarities of each system.
Nittler, Josefine y Mattias Ahlsén. "Key components of building customer trust in the space industry : An investigation of the future of satellite applications". Thesis, Uppsala universitet, Industriell teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447558.
Texto completoNguyen, Khac Duy. "Structural damage identification using experimental modal parameters via correlation approach". Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/117289/2/Khac%20Duy%20Nguyen.pdf.
Texto completo