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Decentralized Optimal Design using the Lagrangian Relaxation Approach

Decentralized Optimal Design using the Lagrangian Relaxation Approach

Year: 2009

Section: Design Methods and Tools

Editor: Norell Bergendahl, M.; Grimheden, M.; Leifer, L.; Skogstad, P.; Lindemann, U.

Author: Li, Simon

Section: Design Methods and Tools

Pages: 313-324

Abstract

To minimize the coordination efforts among design teams and expedite the design process via parallel workflow, this paper proposes a framework of decentralized optimal design. The framework consists of two major components. The first component is the characterization of team-based interactions in engineering design via the notions of responsibility and controllability. This characterization helps us to understand what kind of role a team can perform in a decentralized design environment. The second component is the application of the Lagrangian relaxation approach to support concurrent decision making (i.e., parallel workflow) during the team-based design process. The framework has been demonstrated through the welded beam design example, and the results are promising in view of future development in this research direction.

Keywords: decentralized decision making, optimal design, Lagrangian relaxation

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The Design Society and the Stanford Center for Design Research cordially invite you to participate in the International Conference on Engineering Design, ICED'09. The venue will be Stanford University’s verdant campus in the heart of Silicon Valley, a short 35 miles south of San Francisco, California. Research papers and case studies are solicited on any topic related to design thinking, theory, and practice, with a premium placed on evidence-based research. Topics and Themes include: *...

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