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Dissertations / Theses on the topic 'Structural Optimisation'

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1

Appelo, Sophia Aletta. "Structural optimisation via genetic algorithms." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71907.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The design of steel structures needs to incorporate some optimisation procedure that evolves the initial design into a more economic nal design, where this nal design must still satisfy all the initial design criteria. A candidate optimisation technique suggested by this research is the genetic algorithm. The genetic algorithm (GA) is an optimisation technique that was inspired by evolutionary principles, such as the survival of the ttest (also known as natural selection). The GA operates by generating a population of
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Barry, Mamadou Aliou. "Optimisation des structures nanophotoniques pour le photovoltaïque." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAC096/document.

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Ce manuscrit s'attache au problème du design en photonique, à savoir déterminer la meilleure façon d'agencer des éléments nanométriques pour obtenir la réponse optique que l'on désire. Différents algorithmes sont testés. Un algorithme en particulier semble adapté à ce type de problème, et permet de retrouver des structures photoniques présentes dans la nature sur les carapaces de certains insectes ou les ailes de certains papillons. Appliqué à l'anti-reflet d'une cellule photovoltaïque, l'algorithme a permis de trouver une structure contre-intuitive mais particulièrement efficace, ce qui montr
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3

Laamiri, Hassan. "Optimisation methods in structural systems reliability." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46878.

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4

Pritchard, Thomas J. "Novel techniques in structural layout optimisation." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419635.

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5

Buckney, Neil. "Optimisation of wind turbine blade structural topology." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.633206.

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Wind turbines become more cost effective as they grow larger; however the blade mass increases at a greater rate than the power. For a continued size increase, reducing the mass of the blades is necessary. Additionally, lighter blades lower overall turbine costs because the loads on the rest of the structure are decreased. Therefore, the use of lightweight blades can have a significant impact on the cost of wind energy. To achieve blade mass reductions, an alternative structural layout is generated using topology optimisation. The result is a topology which varies along the blade length, trans
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6

Wood, Derren Wesley. "Dual sequential approximation methods in structural optimisation." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20033.

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Thesis (PhD)--Stellenbosch University, 2012<br>ENGLISH ABSTRACT: This dissertation addresses a number of topics that arise from the use of a dual method of sequential approximate optimisation (SAO) to solve structural optimisation problems. Said approach is widely used because it allows relatively large problems to be solved efficiently by minimising the number of expensive structural analyses required. Some extensions to traditional implementations are suggested that can serve to increase the efficacy of such algorithms. The work presented herein is concerned primarily with three topics
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7

Qian, Connie Cheng. "Structural optimisation of discontinuous carbon fibre composites." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14542/.

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There has been a growing interest in using discontinuous carbon fibre composites for semi-structural applications within the automotive industry. The main advantages of discontinuous fibres are low material costs, low wastage and low touch labour compared with processes using carbon fibre textiles. Directed Carbon Fibre Preforming (DCFP) is an automated process for producing complex 3D preforms for liquid moulding. DCFP offers the potential for producing highly optimised structures, with local control over tow size, fibre length and volume fraction within the component. The execution of this i
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8

Uthman, Zana. "Configurational forces in structural and continuum optimisation." Thesis, University of Sheffield, 2008. http://etheses.whiterose.ac.uk/91/.

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This thesis deals with optimisation using the principles of continuum mechanics. Both shape and mesh optimisation will be covered. A unified approach will be introduced to obtain shape and mesh optimisation for hyperelastic, hyperelastodynamic and hyperelastoplastic settings. The approach makes use of the generated material force method in mesh optimisation and the so-called imposed material force method in shape optimisation. To this end, the appropriate spatial and material continuum mechanic Equations will be developed in hyperelastic, hyperelastodynamic and hyperelastoplastic settings. A s
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9

Liu, Jing-Sheng. "Integrated structural and electromagnetic optimisation of large terrestrial and space antenna structures." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/843480/.

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In this study, a novel multi-parameter overall situation optimisation method and mathematical model has been developed for use with terrestrial and space reflector antenna electro-mechanical systems and other metallic and polymer composite civil engineering structures. To satisfy extremely high design requirements, the proposed approach incorporates the objectives from various structural and electromagnetic (EM) performances of the system such as structural frequency, weight, stiffness, strength, reflector surface accuracy, antenna EM efficiency (gain), and radiation patterns at many working/l
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10

Proos, Kaarel. "Evolutionary structural optimisation as a robust and reliable design tool." Connect to full text, 2002. http://hdl.handle.net/2123/519.

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Thesis (Ph. D.)--University of Sydney, 2002.<br>Title from title screen (viewed Apr. 28, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Aeronautical, Mechatronic and Mechanical Engineering. Includes bibliographical references. Also available in print form.
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11

Kuzjatkin, Juri. "Structural Weight Optimisation of a Carbon Fibre Ferry." Thesis, KTH, Marina system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163696.

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The Damen Ferry department is developing a concept of fast ferries (DFFe) built of composite materials. Based on the previous experience in composite shipbuilding of Damen modular waterbuses (DWBu) and Water Taxies the Ferry department tries to utilize the existing experience and use it in production of larger vessels that are capable to develop higher speeds and carry more passengers. The key objective is the weight saving - that results in a lighter and therefore more sustainable craft that consumes less fuel and is capable to carry more payload. The expectations are at least 30 per cent of
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12

Jarmo, Söderman. "Structural and operational optimisation - applications in energy systems /." Åbo : Åbo Akademi University, 2007. http://catalogue.bnf.fr/ark:/12148/cb41224358g.

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13

Jiang, Haihui Joy. "Structural Design of Ionic Liquids for Process Optimisation." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19001.

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Ionic liquids (ILs) are designer solvents with tuneable cationic and anionic structures. We propose structural factors that are key to realising the designer solvent promise of ILs. We highlight their potential for translation to new generations of low-cost and environmentally sustainable cation and anion motifs for large-scale applications. Starting from a comparison among primary and secondary ammonium ILs, the unusual liquid nanostructure of pyrrolidinium ILs explains its versatile solvent properties. In the context of biomass processing, we present a framework for the design of IL structu
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14

Baldock, Robert David. "Structural optimisation in building design practice : case-studies in topology optimisation of bracing systems." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612227.

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15

Tandon, Vijay Lakshmi. "Computer based optimisation techniques in design methodology." Thesis, University of Wolverhampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335754.

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16

McCafferty, R. "Optimisation of the design of structures using sensitivity analysis." Thesis, University of Wolverhampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370176.

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The increasing demands placed upon design engineers to evolve optimal solutions to prescribed problem specifications necessitates more definitive analysis of system response to modifications.Traditional solution techniques including discretised methods are required to be repeatedly evaluated in multiple re-analysis solution environments in the search for optimal behavioural response. Modern developments in sequential linear programming techniques in both unconstrained and constrained environments have enabled the methods of optimisation to be applied in a structural context.Such advances are n
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17

Crewe, Adam J. "The characterisation and optimisation of earthquake shaking table performance." Thesis, University of Bristol, 1998. http://hdl.handle.net/1983/47c8d984-04b8-4c21-9491-e74829e561ed.

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18

Schmidt, Martin-Pierre. "Computational generation and optimization of mechanical structures On structural topology optimization using graded porosity control Structural topology optimization with smoothly varying fiber orientations." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR01.

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Cette thèse étudie et développe des méthodes de modélisation mathématique, analyse et optimisation numérique appliquées à la génération d’objets 3D. Les approches proposées sont utilisées pour la génération de structures lattices et de structure continue par optimisation topologique<br>This thesis studies and develops methods for mathematical modeling, numerical analysis and optimization applied to the generation of 3D objects. The proposed approaches are used to generate lattice structures and continuum structures with topology optimization
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Salah, Maher Jawad Younis. "Optimum plastic design of structures by generalized inverse theory and quadratic programming." Thesis, Queen Mary, University of London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337445.

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20

Proos, Kaarel Andres. "Evolutionary structural optimisation as a robust and reliable design tool." Thesis, The University of Sydney, 2002. http://hdl.handle.net/2123/519.

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Evolutionary Structural Optimisation (ESO) is a relatively new design tool used to improve and optimise the design of structures. It is a heuristic method where a few elements of an initial design domain of finite elements are iteratively removed. Such a process is carried out repeatedly until an optimum design is achieved, or until a desired given area or volume is reached. There have been many contributions to the ESO procedure since its conception back in 1992. For example, a provision known as Bi-Directional ESO (BESO) has now been incorporated where elements may not only be removed,
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Proos, Kaarel Andres. "Evolutionary structural optimisation as a robust and reliable design tool." University of Sydney. Aerospace, 2002. http://hdl.handle.net/2123/519.

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Evolutionary Structural Optimisation (ESO) is a relatively new design tool used to improve and optimise the design of structures. It is a heuristic method where a few elements of an initial design domain of finite elements are iteratively removed. Such a process is carried out repeatedly until an optimum design is achieved, or until a desired given area or volume is reached. There have been many contributions to the ESO procedure since its conception back in 1992. For example, a provision known as Bi-Directional ESO (BESO) has now been incorporated where elements may not only be removed,
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22

Ugail, Hassan. "Parametric design and optimisation of thin-walled structures for food packaging." Springer, 2003. http://hdl.handle.net/10454/2647.

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In this paper the parametric design and functional optimisation of thin-walled structures made from plastics for food packaging is considered. These objects are produced in such vast numbers each year that one important task in the design of these objects is to minimise the amount of plastic used, subject to functional constraints, to reduce the costs of production and to conserve raw materials. By means of performing an automated optimisation on the possible shapes of the food containers, where the geometry is parametrised succinctly, a strategy to create the optimal design of the containers
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23

Gil, Lorenzo Saleta. "Structural behaviour of concrete segmental lining tunnels : towards design optimisation." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/286292.

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The deployment of engineering models and design methods divorced from the effect that mechanised shield tunnelling with tunnel boring machines (TBMs) has on concrete segmental linings (CSLs) can lead to either material waste or structural damage within the tunnel design life. Most research to date on CSL behaviour during construction neglects the sequential ring loading and TBM-lining transverse interactions, which this thesis proved to be key in the short and long term behaviour of CSLs and whose study is essential if the design and maintenance of CSL structures is ever to be optimised. This
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24

Dunning, Peter. "Introducing loading uncertainty in level set-based structural topology optimisation." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538137.

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Structural topology optimisation aims to provide solutions that are independent of the initial layout, allowing the greatest opportunity to find the best design. Recent developments have seen increased interest in level set based optimisation, as the solutions obtained possess smooth boundaries and are free of numerical instabilities that affect traditional element based methods. The direct level set based structural topology optimisation method has been successful in solving a range of problems. However, it does suffer from some drawbacks and limitations. Two of the main issues with the direc
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25

Bothma, André Smith. "A computational implementation of design sensitivity analysis and structural optimisation." Master's thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/16106.

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Bibliography: pages 118-121.<br>In the field of computational mechanics, increases in computing power and enhancements in material and kinematic models have enhanced the feasibility of performing structural design optimisation for a wide range of applications. The work presented here was motivated by the current groundswell of research effort in computational optimisation. Design Sensitivity Analysis (DSA) crucially underpins much of structural optimisation and, as such, is focussed on more intently than the optimisation theory itself: various approaches to the Direct Differentiation Method (D
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26

Zanardo, Gabriele. "Structural Modification Approaches to Modal Design Optimisation of Vibrating Systems." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427526.

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This dissertation addresses the problem of assigning the desired dynamic behaviour to vibrating systems, with particular attention on the generality of the approaches proposed. The main focus of this work is in developing structural modification approaches ensuring the feasibility and the optimality of the computed solution. The proposed approaches are suitable for both the design of new mechanical systems, and the performance optimisation of existing ones. Three formulations are proposed: in the first, the original system is modelled by means of mass and stiffness matrices, while in the secon
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Kelly, Liam. "Reducing design time : the impact of evolutionary structural optimisation on structural trade studies during preliminary design." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/380508/.

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Aircraft design is an inherently multi-disciplinary decision making process. In many design processes, the vehicle configuration is selected based on aerodynamic considerations in the concept design stage, before the structural layout is considered during preliminary design. Selection of the best vehicle configuration relies on an estimate of weight to determine the required lift of the aircraft. Structural topology optimisation is an efficient method for automatically generating a structural design layout that fits within a given design space and meets a given set of design criteria. By compa
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28

Wong, Kin Ming. "Evolutionary structural form optimisation for lateral stiffness design of tall buildings /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202007%20WONGK.

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29

Wegert, Zach. "Analysis and optimisation of periodic piezoelectric materials." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232770/1/Zachary_Wegert_Thesis.pdf.

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This project developed computational tools to analyse and design novel piezoelectric materials that have the potential to be utilised in next-generation electromechanical devices. The thesis demonstrates how such architectured materials can be used in the design of multi-functional robotic ‘pain’ sensors.
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Mesnil, Romain. "Explorations structurelles de domaines de formes constructibles pour l’architecture non-standard." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1151/document.

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Les dernières décennies ont vu l’émergence de formes architecturales non standard. Les concepteurs se retrouvent généralement démunis face à la complexité géométrique de ces objets, dont la fabrication rime souvent avec complication. De plus, les outils utilisés dissocient forme et fonctionnement structurel,ce qui complexifie le processus de décision pour ingénieurs et architectes. Ce mémoire prend un point de vue fondé sur la notion d’invariance par transformation géométrique et étudie plusieurs strategies de génération de formes naturellement constructibles pour remédier à ces manques. Trois
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Ainul, Azmel. "Structural and aeroelastic multidisciplinary optimisation of a joined-type sensorcraft wing." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494600.

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Classical criteria of aircraft design involve adding a multiplier to the structure's inertial load to cater for various flight circumstances. The value of this multiplier depends on the type of aircraft designed, for example a high value is used in acrobatic variants to cater for their high g manoeuvres, as compared to a lower value in light non-acrobatic versions.
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32

Allen, Jonathan George. "A framework for hyper-heuristic optimisation of conceptual aircraft structural designs." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10741/.

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Conceptual aircraft structural design concerns the generation of an airframe that will provide sufficient strength under the loads encountered during the operation of the aircraft. In providing such strength, the airframe greatly contributes to the mass of the vehicle, where an excessively heavy design can penalise the performance and cost of the aircraft. Structural mass optimisation aims to minimise the airframe weight whilst maintaining adequate resistance to load. The traditional approach to such optimisation applies a single optimisation technique within a static process, which prevents a
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33

Nasuf, A. "An automated shape grammar approach to structural design description and optimisation." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/359741/.

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The main objective of this research is to develop and evaluate an automated design description and optimisation framework based on the Shape Grammar (SG) syntax. In particular, an algorithmic methodology to automate the SG syntax using evolutionary intelligence is proposed. The proposed automation of SG is achieved by mapping the genetic information provided by a Genetic Algorithm (GA) to context-free grammar rules by a means of Backus-Naur Form (BNF) syntax known as Grammatical Evolution (GE). GE is an efficient optimisation tool, which can be used in a variety of optimisation problems. First
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Ngim, Da-Zhe (Bertrand). "A two-stage structural optimisation and thermal discretisation of non-convective structured insulators : applications in granular-solid structures by additive manufacturing technology." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/33992.

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A systematic design procedure for characterising the strength and insulation requirements of a modular unit structure from additive manufacturing has been presented. The proposed 'two-stage' method consists of structural optimisation and thermal 'discretisation', through use of the Metamorphic Development (MD) and Discretisation by Partitioning Method (DbPM), respectively. A structural layout optimisation method of a consolidated granular-solid structure for strength requirements is demonstrated. The reliability of the layout optimized design solution tested using experiments and finite elemen
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35

Gerzen, Nikolai [Verfasser]. "Analysis and Applications of Variational Sensitivity Information in Structural Optimisation / Nikolai Gerzen." Aachen : Shaker, 2014. http://d-nb.info/1060623048/34.

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36

Thein, Chung Ket. "An effective optimisation method for multifactor and reliability-related structural design problems." Thesis, University of Hull, 2011. http://hydra.hull.ac.uk/resources/hull:5338.

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This thesis first presents a systematic design procedure which satisfies the required strength and stiffness, and structural mass for conceptual engineering structural designs. The procedure employs a multi-objective and multi-disciplinary (MO–MD) optimisation method (multifactor optimisation of structure techniques, MOST) which is coupled with finite element analysis (FEA) as an analysis tool for seeking the optimum design. The effectiveness of the MOST technique is demonstrated in two case studies. Next, a reliability-related multi-factor optimisation method is proposed and developed, repres
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37

Zavvos, Aristeidis. "Structural optimisation of permanent magnet direct drive generators for 5MW wind turbines." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8299.

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This thesis focuses on permanent magnet "direct drive" electrical generators for wind turbines with large power output. A variety of such generator topologies is reviewed, tested and optimised in an attempt to increase their potential as commercial concepts for the wind industry. Direct drive electrical generators offer a reliable alternative to gearbox drivetrains. This novel technology reduces energy loses thus allowing more energy to be yield from the wind and decreases the maintenance cost at the same time. A fundamental issue for these generators is their large size which makes them diffi
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38

Cervera, Eva. "Evolutionary structural optimisation based on boundary element representation of B-spline geometry." Thesis, Durham University, 2003. http://etheses.dur.ac.uk/2004/.

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Evolutionary Structural Optimisation (ESO) has become a well-established technique for determining the optimum shape and topology of a structure given a set of loads and constraints. The basic ESO concept that the optimum topology design evolves by slow removal and addition of material has matured over the last ten years. Nevertheless, the development of the method has almost exclusively considered finite elements (FE) as the approach for providing stress solutions. This thesis presents an ESO approach based on the boundary element method. Non-uniform rational B-splines (NURBS) are used to def
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Scanlan, M. J. "The application of ab initio structural optimisation to contemporary problems in biochemistry." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356432.

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Ollar, Jonathan. "A multidisciplinary design optimisation framework for structural problems with disparate variable dependence." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/24715.

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Multidisciplinary design optimisation incorporates several disciplines in one integrated optimisation problem. The benefi t of considering all requirements at once rather than in individual optimisations is that synergies between disciplines can be exploited to fi nd superior designs to what would otherwise be possible. The main obstacle for the use of multidisciplinary design optimisation in an industrial setting is the related computational cost which may become prohibitively large. This work is focused on the development of a multidisciplinary design optimisation framework that extends the
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Calvi, Adriano. "Finite element model updating in structural dynamics using design sensitivity and optimisation." Thesis, Cranfield University, 1998. http://dspace.lib.cranfield.ac.uk/handle/1826/10507.

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Model updating is an important issue in engineering. In fact a well-correlated model provides for accurate evaluation of the structure loads and responses. The main objectives of the study were to exploit available optimisation programs to create an error localisation and updating procedure of nite element models that minimises the "error" between experimental and analytical modal data, addressing in particular the updating of large scale nite element models with severe requirements on the mode shapes correlation. A new methodology and procedure that allows the semi-automatic adjustment of a l
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Ullah, Baseer. "Structural topology optimisation based on the boundary element and level set methods." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10659/.

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The research work presented in this thesis is related to the development of structural optimisation algorithms based on the boundary element and level set methods for two and three-dimensional linear elastic problems. In the initial implementation, a stress based evolutionary structural optimisation (ESO) approach has been used to add and remove material simultaneously for the solution of two-dimensional optimisation problems. The level set method (LSM) is used to provide an implicit description of the structural geometry, which is also capable of automatically handling topological changes, i.
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Massaro, Antonio. "Optimisation, games and learning strategies in telecommunication systems subject to structural constraints." Doctoral thesis, Università degli studi di Trento, 2019. https://hdl.handle.net/11572/367994.

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Telecommunication systems are becoming more and more complex and dynamic. As an example, on e-commerce platforms, on content provision platforms or cloud computing platforms, a variety of dierent agents interact and inuence each other. In data-centers, large numbers of dierent ows need to be served meeting a given quality of service, and the routing decisions taken for one ow can easily inuence the performance of some other ows. These examples are characterized by complexity and dynamism. These features emerge form the interactions among agents and the environment where they operate, and from
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Massaro, Antonio. "Optimisation, games and learning strategies in telecommunication systems subject to structural constraints." Doctoral thesis, University of Trento, 2019. http://eprints-phd.biblio.unitn.it/3630/1/tesi.pdf.

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Telecommunication systems are becoming more and more complex and dynamic. As an example, on e-commerce platforms, on content provision platforms or cloud computing platforms, a variety of dierent agents interact and inuence each other. In data-centers, large numbers of dierent ows need to be served meeting a given quality of service, and the routing decisions taken for one ow can easily inuence the performance of some other ows. These examples are characterized by complexity and dynamism. These features emerge form the interactions among agents and the environment where they operate, and from
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Ghurbal, Ehsan. "Un-weighted multi-criteria mesh and structural optimisation method with finite element analysis." Thesis, University of Huddersfield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273718.

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Brodie, Robert Neil. "Development of controllability and robustness methodologies for Bi-directional Evolutionary Structural Optimisation (BESO)." Thesis, University of Leeds, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486156.

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47

Plouraboué, Thibaud. "Optimisation des propriétés thermomécaniques d’adhésifs polyépoxydes structuraux en conditions extrêmes : relation structure-propriétés." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0413.

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La démocratisation des technologies du collage dans le domaine aérospatial amène les industriels à exiger des adhésifs toujours plus performants. L’objectif de cette thèse est d’optimiser les propriétés thermomécaniques d’un adhésif polyépoxyde bi-composant qui devra présenter des propriétés structurales entre -150°C et +150°C, tout en respectant des exigences de mise en oeuvre.L’analyse de la littérature et des expériences préliminaires a permis de sélectionner le système polyépoxyde modèle binaire le plus pertinent en termes de réactivité à l’ambiante et de propriétés sur assemblage collé. P
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Frabolot, Ferdinand. "Optimisation de forme avec détection automatique de paramètres." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2182/document.

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L’objectif de ce travail de thèse est de pouvoir intégrer totalement l’optimisation de forme des raidisseurs de capot dans un processus de conception industrielle et cela afin d’optimiser la forme et la distribution des raidisseurs dans un contexte multi-objectif (voire multi-disciplinaire) d’une structure 3D surfacique. Pour ce faire, nous avons tout d’abord établi un aperçu de l’état de l’art dans l’optimisation de forme des structures en classifiant les différentes méthodes de paramétrage de forme, en trois catégories ; les méthodes basées sur la géométrie (telle la paramétrisation d’un mod
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49

Roets, Philip J. "Development of a hybrid light alloy - carbon fibre aerospace structural panel." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4151.

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Abstract:
Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The development of light and sti aerospace structural panels is very important in the aerospace industry, e.g. a lighter satellite requires less fuel to launch it into space which in turn saves money for the owner of the satellite. This thesis describes the design, optimisation, manufacturing and testing of a ribbed light alloy core - carbon bre face sheets, sandwich-type, satellite panel operating at launch loading conditions (115 m/s2 accelerations and requiring a minimum s
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50

Agyei, Eugene Osei. "Groundwater modeling and management using the finite element method and evolutionary optimisation techniques /." Title page, synopsis and contents only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09pha284.pdf.

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