Modeling Design Concepts under Risk and Uncertainty using Parameterized Efficient Sets 2008-01-0709
Decisions made during conceptual design can have a major impact on the success of a design project. However, the inherently imprecise nature of design is a major source of uncertainty and risk in conceptual design decisions. A single concept relates to a large set of specific design implementations, each of which has a different level of desirability based on the tradeoffs designers are willing to make. It therefore is beneficial for designers to have an understanding of the various tradeoffs they can achieve by implementing a concept. In this paper, we describe an approach to modeling design concepts under uncertainty based on a tradeoff space representation. We use the principles of decision making to develop a useful interpretation of a tradeoff space for decisions under uncertainty and to identify criteria useful for eliminating undesirable tradeoffs from consideration. We illustrate our approach to modeling and decision making on an example for the conceptual design of a gearbox.
Richard J. Malak, Christiaan J. J. Paredis
G.W. Woodruff School of Mechanical Engineering Georgia Institute of Technology
SAE World Congress & Exhibition
SAE International Journal of Materials and Manufacturing-V117-5EJ, Reliability and Robust Design in Automotive Engineering, 2008-SP-2170, SAE International Journal of Materials and Manufacturing-V117-5