http://bura.brunel.ac.uk/handle/2438/179 2013-05-18T17:49:55Z 2013-05-18T17:49:55Z Gharib, Islam http://bura.brunel.ac.uk/handle/2438/7436 2013-05-17T13:31:05Z 2013-01-01T00:00:00Z

Title: Integration of sketch-based ideation and 3D modeling with CAD systems Authors: Gharib, Islam Abstract: This thesis is concerned with the study of how sketch-based systems can be improved to enhance idea generation process in conceptual design stage. It is also concerned with achieving a kind of integration between sketch-based systems and CAD systems to complete the digitization of the design process as sketching phase is still not integrated with other phases due to the different nature of it and the incomplete digitization of sketching phase itself. Previous studies identified three main related issues: sketching process, sketch-based modeling, and the integration between the digitized design phases. Here, the thesis is motivated from the desire to improve sketch-based modeling to support idea generation process but unlike previous studies that only focused on the technical or drawing part of sketching, this thesis attempts to concentrate more on the mental part of the sketching process which play a key role in developing ideas in design. Another motivation of this thesis is to produce a kind of integration between sketch-based systems and CAD systems to enable 3D models produced by sketching to be edited in detailed design stage. As such, there are two main contributions have been addressed in this thesis. The first contribution is the presenting of a new approach in designing sketch-based systems that enable more support for idea generation by separating thinking and developing ideas from the 3D modeling process. This kind of separation allows designers to think freely and concentrate more on their ideas rather than 3D modeling. the second contribution is achieving a kind of integration between gesture-based systems and CAD systems by using an IGES file in exchanging data between systems and a new method to organize data within the file in an order that make it more understood by feature recognition embedded in commercial CAD systems. Description: This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.

2013-01-01T00:00:00Z Edizel, O Evans, G Dong, H http://bura.brunel.ac.uk/handle/2438/7416 2013-05-03T11:00:35Z 2013-01-01T00:00:00Z

Title: Britain welcome's the world: Dressing up London Authors: Edizel, O; Evans, G; Dong, H Description: Copyright @ 2013 Routledge

2013-01-01T00:00:00Z Nickpour, Farnaz http://bura.brunel.ac.uk/handle/2438/7412 2013-04-29T15:40:51Z 2012-01-01T00:00:00Z

Title: Information behaviour in design Authors: Nickpour, Farnaz Abstract: Designers draw on a significant volume and range of information throughout the design process. This could include information on people, materials, markets, processes, etc. However, not all this information is effectively communicated to and used by designers. In order to provide designers with information that is useful, useable and engaging for them, it is important to understand why designers use information, what information they use and when and how they use it. This will be collectively referred to as ‘information behaviour’ in this thesis. There is currently a lack of a holistic understanding of designers’ information behaviour. Through developing a framework for investigation, analysis and reflection on designers’ use and requirements of information, this research aims to provide a better understanding of information behaviour in design, leading to a systematic way to address the key dimensions of information used in a design process. For this purpose, the research focuses on ‘practicing designers’ as key users of information in the real-world practice of design and ‘people information’ as a major type of information used during the design process. An initial framework for addressing key dimensions of information used in the design process is outlined through the analysis and synthesis of relevant literature. The framework is then evaluated and refined through four complementary studies: an interview and questionnaire administered to nine design companies; observation of a design team in a real-world design project; observation of three teams through a design competition; and a survey of designers and design researchers. The outcomes of the studies lead to a refined version of the information framework that includes seven key dimensions and details designers’ behaviour in regard to ‘purpose’, ‘source’, ‘format’, ‘type’, ‘at tributes’, ‘stage’ and ‘intensity’ of people information they use. The research conducted with designers leads to an enhanced understanding of their information behaviour with respect to the seven key dimensions. A new information framework has been created and evaluated; and it is argued that it can be used as a research and education tool to investigate and analyse information used during core stages of a design process. The framework can also assist developers of information tools to make informed decisions on what, how and when to communicate information to designers, ensuring that this information is delivered in a way which has maximum impact on the design process. Description: This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.

2012-01-01T00:00:00Z Abraham, Jeevan George http://bura.brunel.ac.uk/handle/2438/7380 2013-04-26T11:40:13Z 2012-01-01T00:00:00Z

Title: A deflection, buckling and stress investigation into telescopic cantilever beams Authors: Abraham, Jeevan George Abstract: The telescoping cantilever beam structure is applied in many different engineering sectors to achieve weight/space optimisation for structural integrity. There has been limited theory and analysis in the public domain of the stresses and deflections involved when applying a load to such a structure. This thesis proposes (a) The Tip Reaction Model, which adapts classical mechanics to predict deflection of a two and a three section steel telescoping cantilever beam; (b) An equation to determine the Critical buckling loads for a given configuration of the two section steel telescoping cantilever beam assembly derived from first principles, in particular the energy methods; and finally (c) the derivation of a design optimization methodology, to tackle localised buckling induced by shear, torsion and a combination of both, in the individual, constituent, hollow rectangular beam sections of the telescopic assembly. Bending stress and shear stress is numerically calculated for the same structure whilst subjected to inline and offset loading. An FEA model of the structure is solved to verify the previous deflection, stress and buckling predictions made numerically. Finally an experimental setup is conducted where deflections and stresses are measured whilst a two section assembly is subjected to various loading and boundary conditions. The results between the predicted theory, FEA and experimental setup are compared and discussed. The overall conclusion is that there is good correlation between the three sets of data. Description: This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.

2012-01-01T00:00:00Z