Knowledge Base Repository
In addition to research papers, the Design Society is developing several valuable resources for those interested in the study of design. These include a repository of PhD theses, a library of case studies and transcripts of design activities, and an archive of our newsletters. Please note that these resources are accessible exclusively to Design Society members.
Structural complexity: Quantification, validation and its systemic implications for engineered complex systems
Sinha, Kaushik; Omer, Harun; de Weck, Olivier L.
Type:
Year:
2013
Editor:
Udo Lindemann, Srinivasan V, Yong Se Kim, Sang Won Lee, John Clarkson, Gaetano Cascini
Author:
Series:
ICED
Institution:
Massachusetts Institute of Technology, United States of America
Page(s):
189-198
ISBN:
978-1-904670-47-6
ISSN:
2220-4334
Abstract:
The complexity of today’s highly engineered products is rooted in the interwoven architecture defined by its components and their interactions. Quantitative assessment of structural complexity is mandatory for characterization of engineered complex systems. In this paper, we develop a quantitative measure for structural complexity and illustrate its application to a real-world, complex engineered system. It is observed that low topological complexity implies centralized architecture and it increases as we march towards highly distributed architectures. We posit that the development cost increases super-linearly with structural complexity. Empirical evidences from literature and preliminary results from simple experiments strengthen our hypothesis. Preliminary experiments show that the effort increases super-linearly with increasing structural complexity (i.e., exponent, b = 1.69). We further introduce complicatedness as an observer-dependent property that links structural complexity to system level observables like the development cost. We further discuss distribution of complexity across the system architecture and its strategic implications for system development efforts.
Keywords:
