Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Structural optimisation"”.
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Automated CAD Model Generation for Structural Optimisation
… mesh-based finite element descriptions common in structural optimisation must be first translated into CAD models. Currently, this translation either can be performed semi-manually or fails to reserve the structural optimality found by the structural optimisation due to the intrinsic difference in …
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SPDE-derived random fields in structural optimisation and elastodynamics
… model material variability with applications on structural optimisation and statistical inference. Gaussian random fields on lattice structures are modelled by exploiting the established connection between random fields and stochastic partial differential equations (SPDEs). For a random field …
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A computational implementation of design sensitivity analysis and structural optimisation
… 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 …
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Optimum design of structures with stability constraints using the evolutionary optimisation method
In the past most of the works on structural optimisation have been based on either mathematical programming or optimality criteria methods and have mainly concentrated on static responses of structures. These optimisation methods are mathematically complex and have limited applications. A novel …
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Bi-directional evolutionary method for stiffness and displacement optimisation
This thesis presents a method for structural optimisation called bi-directional evolutionary structural optimisation (BESO). It is an extension of the systematic research on the evolutionary method. The basic concept of evolutionary structural optimisation (ESO) is that by slowly removing the …
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Evolutionary methods for topology optimisation of continuum structures: static and dynamic problems
This thesis studies the topology optimisation of continuum structures. Two methods have been investigated, namely. Evolutionary Structural Optimisation (ESO) and Bidirectional ESO (BESO). The basic concept of ESO is that by systematically removing inefficient materials from the structure, the …
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Bayesian robust optimisation of buckling loads of trusses with random imperfections
Structural optimisation with linear responses is a highly active research field with broad applications. In practice, nonlinear structural behaviour and random imperfections different from the ideal design often need to be considered. Optimised lightweight structures, such as truss-based shallow …
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Dataflow based design suite for the development and management of multi-functional reconfigurable systems
… the reconfigurable substrate composition, also structural optimisation, dynamic power management and co-processing support. All the pro- vided features have been validated on different signal, image and video processing scenarios, targeting either FPGA and ASIC.
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The design of adaptive structures for wing morphing
… methodologies pursue two threads towards global optimisation of morphing structures, by providing means of aerodynamic enhancement, using efficient structural shape optimisation. A heuristic approach is proposed in this work that enables morphing through a range of stable cambered airfoils to …
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Design optimisation of steel portal frames using modified distributed genetic algorithms
… and convergence to the optimum solution for structural steel frames. This was achieved by introducing some novelties of the main algorithm of distributed genetic algorithms and applying them in structural optimisation. Among these are the creation of new mutation schemes, adding a crossover …
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A structural design process for a next generation aerospace design environment
The current structural sizing process used to design military aircraft was developed when the emphasis was on the design of the most advanced products possible, with the customer bearing the associated risks of its development. However the marketplace has evolved into where the customer expects …
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Feasibility of selective multiple boosting in the planning of intracranial radiation therapy
… models. The models show that intra-structural optimisation is easily implemented within a standard IMRT planning module. For concentric, spherical boost volumes, regional dose can be controlled at 10 and 5 mm resolution, where a dose differential of 5 and 3 Gy respectively is readily …
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Genome-guided bioprospecting for novel antibiotic lead compounds.
… compounds from crude extracts, followed by structural optimisation and bioactivity profiling. The hitherto unrecognised potential of β-lactone natural compounds as 'ideal antibiotics' is highlighted, and several structural optimisation strategies required to harness this potential are …
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Structural fatigue assessment and optimisation of offshore wind turbine jacket foundations.
… innovative jacket designs by applying a topology optimisation algorithm. The research demonstrates the use of advanced computational techniques to improve existing designs by enhancing structural integrity and fatigue life whilst reducing the mass. The research presents a comprehensive …
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Optimising Mass Transfer in Synthetic Porous Materials
… following the law. Additionally, I show that structural optimisation guided by this theory can substantially improve the kinetic performance of aerogel-based gas sensors, where the response and recovery times are shortened by 8.6% to 18.2%. This work provides a solid theoretical framework for …
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Printable and Machine Intelligent 0D/2D Materials Gas Sensor Arrays
… via freeze-casting and apply Murray’s law for structural optimisation through collaboration. The resulting Murray aerogel gas sensor exhibits dramatically improved sensing dynamics due to enhanced mass transport efficiency. My research framework combines materials engineering, structural …
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Genetic algorithm based optimisation of FRP composite plates in ship structures
… this thesis deals with the presentation of a structural synthesis (optimisation framework) for plate components of composite ship structures. The framework broadly consists of an optimisation technique and structural analytical methods.<br/>To make the framework compatible with the nature of …
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Stability analysis of edge corrugated shells
… in concrete printing and the incentive for shape optimisation due to the fairly small thickness (in comparison with the span), instability must be carefully considered. Consequently, the pursuit of new shapes should be oriented towards the ones that provide intrinsically a significant improvement …
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Phase selective flame-retardant laminates
… polymer composites are widely used in structural applications due to their lightweight and high strength. However, their poor fire performance–particularly the flammability and softening of the polymer matrix at elevated temperatures–poses a significant safety concern. This thesis …
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Particle-Based Triboelectric Vibration Sensor for Speech Recognition and Remote Machine Condition Monitoring
… for real-time monitoring of dynamic loads and structural health without external power sources. Based on the triboelectric effect and electrostatic induction, a triboelectric vibration sensor can convert mechanical energy into electrical energy. This technology holds significant promise for …
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