Browsing by Author "Sharma, Sanjiv"

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    ADOPT: An augmented set-based design framework with optimisation
    (Cambridge University Press, 2019-03-07) Georgiades, Alexandros; Sharma, Sanjiv; Kipouros, Timoleon; Savill, Mark
    During the early stages of any system design, a thorough exploration of the design space can prove to be challenging and computationally expensive. The challenges are further exacerbated when dealing with complex systems, such as an aircraft, due to the high dimensionality of their design space. Arising from the Toyota Product Development System, Set-Based Design allows parallel evaluation of multiple alternative configurations in the early design stages. At the same time, optimisation methods can be employed at later stages to fine-tune the engineering characteristics of design variants. Presented in this paper, is the Augmented set-based Design and OPTimisation (ADOPT) Framework that introduces a novel methodology for integrating the two areas. This allows for a thorough design space exploration while ensuring the optimality of the selected designs. The framework has been developed using a process-independent and tool-agnostic approach so that it can be applied to the design process of varying kinds of systems. To demonstrate the implementation and potential benefits, the framework has been applied to the design of a generic aircraft fuel system. The results from the case study and the framework itself are discussed, with a number of areas for further development and future work being identified and presented.
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    Aircraft systems architecting: a functional-logical domain perspective
    (AIAA, 2016-06-17) Guenov, Marin D.; Molina-Cristobal, Arturo; Voloshin, V.; Riaz, Atif; van Heerden, Albert S. J.; Sharma, Sanjiv; Cuiller, C.; Giese, Tim
    Presented is a novel framework for early systems architecture design. The framework defines data structures and algorithms that enable the systems architect to operate interactively and simultaneously in both the functional and logical domains. A prototype software tool, called AirCADia Architect, was implemented, which allowed the framework to be evaluated by practicing aircraft systems architects. The evaluation confirmed that, on the whole, the approach enables the architects to effectively express their creative ideas when synthesizing new architectures while still retaining control over the process.
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    Capturing the industrial requirements of set-based design for CONGA framework - Final
    (Cranfield University Press, 2013-09-19) Al-Ashaab, Ahmed; Golob, Matic; Noriega, Paula; Torriani, Filippo; Alvarez, Pedro; Beltran, Ana; Busachi, Alessandro; Ex-Ignotis, Lambert; Rigatti, Carlotta; Sharma, Sanjiv
    The Configuration Optimisation of Next-Generation Aircraft (CONGA) is a proposed framework in a response industrial need to enhance the aerospace capability in the UK. In order to successfully address this challenge, a need to develop a true multi-disciplinary Set-Based Design (SBD) capability that could deploy new technologies on novel configurations more quickly and with greater confidence was identified. This paper presents the first step towards the development of the SBD capabilities which is to elicit the industrial requirement of the SBD process for the key aerospace industrial partners involved in this CONGA approach.
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    Capturing the Industrial Requirements of Set-Based Design for the CONGA Framework
    (2013-09-19T00:00:00Z) Al-Ashaab, Ahmed; Golob, Matic; Noriega, Paula; Torriani, Filippo; Alvarez, Pedro; Beltran, Ana; Busachi, Alessandro; Ex-Ignotis, Lambert; Rigatti, Carlotta; Sharma, Sanjiv; Shehab, Essam; Ball, Peter; Tjahjono, Benny
    The Configuration Optimisation of Next-Generation Aircraft (CONGA) is a proposed framework in a response to industrial need to enhance the aerospace capability in the UK. In order to successfully address this challenge, a need to develop a true multi-disciplinary Set-Based Design (SBD) capability that could deploy new technologies on novel configurations more quickly and with greater confidence was identified. This paper presents the first step towards the development of the SBD capabilities which is to elicit the industrial requirement of the SBD process for the key aerospace industrial partners involved in this CONGA approach.
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    Predicting and visualizing cost propagation due to engineering design changes
    (Design Society, 2017-12-31) Georgiades, Alexandros; Sharma, Sanjiv; Kipouros, Timoleon; Savill, Mark
    During product development changes in the initial design are ubiquitous. The ability to predict such changes, along with the expected costs, is a challenge on its own. This challenge increases exponentially when a single design change on one element of the system propagates to other components. As change propagates, so does the cost associated with it; where cost is more than just financial. A number of knowledge-based methods have been developed in the past that assist in the prediction of how change propagates through a system, and the impact that it can have on other components. None of the methods developed, however, considers how cost propagates due to design changes. This paper presents a novel methodology for predicting, visualizing, and assessing the propagation of change and the cost associated with it. As part of the methodology, a new method, CP2, has been developed to calculate the propagated costs. The methodology has been applied to a conceptual example of a simple system to demonstrate the procedure and the use of the methods. The visualization of the results arising from this methodology is also demonstrated as a mechanism for design decision-making.