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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Multi-objective design of complex aircraft structures using evolutionary algorithms

Seeger, J., Wolf, K. 03 June 2019 (has links)
In this article, a design methodology for complex composite aircraft structures is presented. The developed approach combines a multi-objective optimization method and a parameterized simulation model using a design concept database. Due to the combination of discrete and continuous design variables describing the structures, evolutionary algorithms are used within the presented optimization approach. The approach requires an evaluation of the design alternatives that is performed by parameterized simulation models. The variability of these models is achieved using a design concept database that contains different layouts for each implemented structural part. Due to the complexity of the generated aircraft structures, the finite element method is applied for the calculation of the structural behaviour. The applicability of the developed design approach will be demonstrated by optimizing two composite aircraft fuselage examples. The obtained results show that the developed methodology is useful and reliable for designing complex aircraft structures.
2

Design Concept: My Amalgamation Of Eastern And Western Cultures

Dong, Yuting 01 January 2008 (has links)
While exploring various subjects in multiple techniques in multiple mediums, I create abstract images that illustrate high technology, urban life, and personal feelings. My work is influenced by Eastern and Western culture. Media, publication, and fashion are derived from Western culture, and design elements are derived from Eastern culture. In doing this, my goal is to achieve more opportunities, greater depth, and a wider audience for my work by cross-utilizing these diverse culture aspects.
3

Mobile methods : eliciting user needs for future mobile products

Mitchell, Valerie A. January 2005 (has links)
The research reported in this thesis had two aims. To investigate how the variability and complexity of the mobile context of use should be addressed when capturing user needs for mobile products and to explore the role of indirect methods of data capture as tools for eliciting user needs in a form appropriate for informing the scenario based design of mobile products during the. earliest stages of product development. This research presents a novel scenario-based approach to eliciting and representing user needs in a form suitable for informing the earliest exploratory stages of mobile product design. Within this approach scenarios are used to provide snapshots of actual or envisaged product use that can be used to find a starting point for design when there is no clearly defined focus for innovation. Scenarios are organized into sets using scenario tables to structure consideration of key variables within the mobile context of use. These key variables are identified as: mobility, emotion, social relationship and communication purpose. Three user studies were conducted using UK undergraduate students as the study population. Study One explored use of schematic representations ('maps') of each participant's social communications and mobility as tools for eliciting user needs, both in relation to existing mobile product use and in relation to projected use of future mobile product concepts. Study Two used a diary study method to explore existing mobile communications use. Ways of structuring consideration of the mobile context of use were explored and the effectiveness of the diary as a tool for eliciting user needs and for scenario generation was assessed. Study Three extended the diary study approach to include consideration ofthe emotional context of product use and to include pictorial feedback of diary entries to study participants. These personal representations of product use were used to further explore user needs and to prompt participants to generate narratives describing motivations for product use suitable for presentation in scenario form.
4

Computer Support for Preliminary Concept Completion & Evaluation/Analysis of Design Concepts

January 2014 (has links)
abstract: Creative design lies at the intersection of novelty and technical feasibility. These objectives can be achieved through cycles of divergence (idea generation) and convergence (idea evaluation) in conceptual design. The focus of this thesis is on the latter aspect. The evaluation may involve any aspect of technical feasibility and may be desired at component, sub-system or full system level. Two issues that are considered in this work are: 1. Information about design ideas is incomplete, informal and sketchy 2. Designers often work at multiple levels; different aspects or subsystems may be at different levels of abstraction Thus, high fidelity analysis and simulation tools are not appropriate for this purpose. This thesis looks at the requirements for a simulation tool and how it could facilitate concept evaluation. The specific tasks reported in this thesis are: 1. The typical types of information available after an ideation session 2. The typical types of technical evaluations done in early stages 3. How to conduct low fidelity design evaluation given a well-defined feasibility question A computational tool for supporting idea evaluation was designed and implemented. It was assumed that the results of the ideation session are represented as a morphological chart and each entry is expressed as some combination of a sketch, text and references to physical effects and machine components. Approximately 110 physical effects were identified and represented in terms of algebraic equations, physical variables and a textual description. A common ontology of physical variables was created so that physical effects could be networked together when variables are shared. This allows users to synthesize complex behaviors from simple ones, without assuming any solution sequence. A library of 16 machine elements was also created and users were given instructions about incorporating them. To support quick analysis, differential equations are transformed to algebraic equations by replacing differential terms with steady state differences), only steady state behavior is considered and interval arithmetic was used for modeling. The tool implementation is done by MATLAB; and a number of case studies are also done to show how the tool works. textual description. A common ontology of physical variables was created so that physical effects could be networked together when variables are shared. This allows users to synthesize complex behaviors from simple ones, without assuming any solution sequence. A library of 15 machine elements was also created and users were given instructions about incorporating them. To support quick analysis, differential equations are transformed to algebraic equations by replacing differential terms with steady state differences), only steady state behavior is considered and interval arithmetic was used for modeling. The tool implementation is done by MATLAB; and a number of case studies are also done to show how the tool works. / Dissertation/Thesis / M.S. Mechanical Engineering 2014
5

Konstrukční návrh hydraulického posilovače řazení nákladního automobilu TATRA / Design of Hydraulic Power Shift of the TATRA Truck

Pončík, Jakub January 2017 (has links)
The aim of this master´s thesis is design of hydralic power shift for transmission Tatra 14TS210L. The master´s thesis contains a description of the individual power shifts used by Tater as well as other truck manufacturers. This is followed by a design concept of the power shift, including FEM calculations of the shift inches and piston rods. Part of the work is also production drawings of the body of the power shift and piston rod.
6

Thinking Friction : Uncover the true colours of Berlin

von Mackensen, Jana January 2012 (has links)
No description available.
7

A Design Concept for the Lighting Design of Federico Garcia Lorca's The House of Bernarda Alba

Kramer, Thaddeus L 01 January 2011 (has links) (PDF)
A discussion of the abstract approach for the lighting design of the Theater Department’s Fall 2010 production of Federico García Lorca’s The House of Bernarda Alba through the use of time of day and “clean and dirty” light.
8

Hudba jako veřejný prostor – Nový koncept brněnské Filharmonie / Music as a public space - New concept of Brno Philharmonic

Kamená, Markéta January 2015 (has links)
The Philharmonic building is designed as a circular central building located in the center of an elliptical water ring. The house moderately expands to upward by an angle of ten degrees. This compositional princip implicitly refers to the morphology of ancient temples, but his reasoning is mostly functional. The water ring has a maximal size considering the size of the park, in spite of it is a significant limit for dimensions of the object. First floor therefore builds up the smallest possible surface area of the ring and each higher floor is increased according to the need of the philharmonic, especially so the floor area suffises to the big amount of dressing rooms and rehearsal. The total cubic capacity of the object is almost minimalist, a concert hall and other necessary equipment is designed in the lower limit of the minimum dimensions. The philharmonic is opened to the neighborhood around the perimeter of all floors, behind the facade common life takes place, this fact makes the building visually interesting. In the daylight, when traffic is muted, it gives the impression of the stoic temple, but in the evening it "coming to life". Architectural expression is subordinated to this princip. The facade is designed from structural glazing, to achieve the greatest possible effect of transparency. The abstract shaping without natural scale of the window or other articulated architectural elements is chosen with respect to the principle philharmonic as a temple of music, not primarily "only" public building. Requirements for the indoor climate indicate a need of the interior shading. In accordance with previous principles the shading elements are chosen abstractly as continuous vertical wooden beams starting at different height with respect to public space inside of the building.
9

Decoding Chinese Classical Architecture for Contemporary Architectural Design - With Special Reference to Modern Architectural Development in Taiwan

Sung, Li-wen 01 December 2006 (has links)
This research began with an exploration of the phenomenon of cultural conflict and fusion in the process of architectural modernization in Taiwan. It will examine the impact of modern and contemporary theories on the practice of architecture of the island. It will then seek out the essence of Chinese classical architecture in order to develop an approach for the development of the future Chinese/Taiwanese architecture. In addition, the findings of the study could serve as a reference for scholars who would pursue historical and theoretical studies of in the subject, or for architects who are seeking design concepts to enhance their projects. The study utilizes an interpretive-historical methodology. It emphasizes that researchers should investigate social phenomena within broader and more complex contexts of what to uncover the underlying cultural factors. To highlight their significance, the author will pursue a hypothetic project to examine and demonstrate the meaningfulness and applicability of the concepts learned from the research. Efforts were made to discover ways in which Taiwanese and Chinese architectural culture can deal with foreign influences, such that it will be able to enjoy the benefits of modernization while maintaining its unique character and identity. Moreover, it will attempt to uncover ways in which Chinese architecture can in fact influence the global contemporary architectural culture. Finally, it is hoped that this work will produce a useful reference for students, scholars and architects who wish to develop design projects that reflect and celebrate regional cultures. / Ph. D.
10

RUNWAY SHOWS AND FASHION FILMS AS A MEANS OF COMMUNICATING THE DESIGN CONCEPT

Lin, Xiaohan 05 August 2016 (has links)
No description available.

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