Managing assumption-driven design change via margin allocation and trade-offs

IF 2.5 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Soufiane El Fassi, Xin Chen, Atif Riaz, Marin D. Guenov, Albert S.J. van Heerden, Sergio Jimeno Altelarrea
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引用次数: 0

Abstract

Assumptions are commonly introduced to fill gaps in knowledge during the engineering design process. However, the uncertainty inherent in these assumptions constitutes a risk that ought to be mitigated. That is, assumptions can negatively impact the system if they turn out to be invalid. Adverse effects may include system failure, violation of requirements, or budget and schedule overruns. In this paper, the relationships between assumptions and margins are made explicit, with the purpose of aiding risk mitigation, as well as accommodating future opportunities such as product evolvability. To this end, a novel assumption management framework is proposed, which consists of a taxonomy of margins, an algorithm for change absorber localisation, and an interactive approach for margin trade-off. The proposed framework is demonstrated with a conceptual aircraft design use case, which shows that the most relevant margins can be identified, given a revision of a set of assumptions. It is also demonstrated that the application of the method allowed the margins to be adjusted according to the confidence in the assumptions, while maintaining satisfaction of all design constraints, without unacceptable compromise of system performance.
通过保证金分配和权衡来管理假设驱动的设计变更
在工程设计过程中,通常会引入假设来填补知识空白。然而,这些假设中固有的不确定性构成了应该减轻的风险。也就是说,假设如果被证明是无效的,就会对系统产生负面影响。不利的影响可能包括系统故障、需求的违反,或者预算和进度的超支。在本文中,假设和利润之间的关系是明确的,以帮助风险缓解的目的,以及适应未来的机会,如产品的可发展性。为此,提出了一种新的假设管理框架,该框架由边际分类、变化吸收器定位算法和边际权衡的交互式方法组成。提出的框架用一个概念飞机设计用例进行了演示,该用例表明,在对一组假设进行修订的情况下,可以确定最相关的边际。还表明,该方法的应用允许根据假设的置信度调整边际,同时保持对所有设计约束的满意,而不会对系统性能造成不可接受的损害。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Engineering Design
Journal of Engineering Design 工程技术-工程:综合
CiteScore
5.00
自引率
33.30%
发文量
18
审稿时长
4.5 months
期刊介绍: The Journal of Engineering Design is a leading international publication that provides an essential forum for dialogue on important issues across all disciplines and aspects of the design of engineered products and systems. The Journal publishes pioneering, contemporary, best industrial practice as well as authoritative research, studies and review papers on the underlying principles of design, its management, practice, techniques and methodologies, rather than specific domain applications. We welcome papers that examine the following topics: Engineering design aesthetics, style and form- Big data analytics in engineering design- Collaborative design in engineering- Engineering concept design- Creativity and innovation in engineering- Engineering design architectures- Design costing in engineering Design education and pedagogy in engineering- Engineering design for X, e.g. manufacturability, assembly, environment, sustainability- Engineering design management- Design risk and uncertainty in engineering- Engineering design theory and methodology- Designing product platforms, modularity and reuse in engineering- Emotive design, e.g. Kansei engineering- Ergonomics, styling and the design process- Evolutionary design activity in engineering (product improvement & refinement)- Global and distributed engineering design- Inclusive design and assistive engineering technology- Engineering industrial design and total design- Integrated engineering design development- Knowledge and information management in engineering- Engineering maintainability, sustainability, safety and standards- Multi, inter and trans disciplinary engineering design- New engineering product design and development- Engineering product introduction process[...]
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