Selecting System Concept by Minimizing Cost of Part Requirement Tolerances
At the end of a conceptual design phase, engineers choose a single (or a small set of) system concept from a large number of concept variants. In most cases, there is not enough design information to quantitatively evaluate how a final system developed from each concept would perform and cost. Thus engineers need to first perceptually evaluate and select a concept, and then design a system. On the other hand, if engineers know analytical relationships between system and part requirements, they can specify target values of part requirements such that a system achieves its target requirements. Furthermore, if engineers know how much it will cost to control part requirements within tolerances, they can minimize the cost of a system by optimizing tolerances of part requirements. This paper proposes and illustrates an approach to select a system concept when engineers know the relationship between system and part requirements, and how much it will cost to control part requirements within tolerances. Engineers choose a concept that minimizes cost.
S. Takai, "Selecting System Concept by Minimizing Cost of Part Requirement Tolerances," Proceedings of IMECE2006 2006 ASME International Mechanical Engineering Congress and Exposition November 2006, Chicago, Illinois USA (IMECE2006), American Society of Mechanical Engineers (ASME), Jan 2006.
Mechanical and Aerospace Engineering
Keywords and Phrases
Concept Selection; Cost-Tolerance Function; Design Matrix; Target Requirement; Tolerance; Cost
Article - Conference proceedings
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