Metrics for assessing design freedom and information certainty in the early stages of design

Timothy William Simpson, D. Rosen, J. K. Allen, F. Mistree

Research output: Contribution to journalArticle

38 Scopus citations


Our primary focus in this paper is on open engineering systems. Developing ranged sets (as opposed to point sets) of top-level design specifications is a means to enhance openness and system flexibility by increasing design knowledge while maintaining design freedom. Consequently, our secondary focus in this paper is on metrics for assessing the design freedom and information certainty associated with a ranged set of top-level design specifications. As a demonstration, these metrics are applied to an example problem, namely, the conceptual design of a family of aircraft. Our emphasis in this paper is on introducing open engineering systems and metrics for design freedom and information certainty, and not on the example, per se.

Original languageEnglish (US)
Pages (from-to)628-635
Number of pages8
JournalJournal of Mechanical Design, Transactions Of the ASME
Issue number4
StatePublished - Jan 1 1998


All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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