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Exploratory design using constraints

Published online by Cambridge University Press:  27 February 2009

Weng Tat Chan  and
Boyd C. Paulson Jr
Weng Tat Chan
Affiliation:
Department of Civil Engineering, National University of Singapore, Kent Ridge, Singapore 0511
Boyd C. Paulson Jr
Affiliation:
Department of Civil Engineering, Stanford University, Stanford, CA 94305-4020, USA.
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Abstract

Engineering design involves the evaluation and satisfaction of a wide variety of constraints. The ability to represent and process these constraints in a computer is important for the verification of the output produced by computer-aided design programs. Constraints need not only check designs but can also be used to derive design solution s that satisfy constraints. The paper discusses how to represent the dual nature of constraints so that design consistency is maintained as the design evolves.

Assumptions and rules of thumb are used frequently in design to propose initial solutions. We represent the logic behind the derivation of these assumptions as heuristic procedures and maintain the dependencies between these assumptions and their consequents as an aid to the management of design consistency. We also propose a simple scheme, involving the partitioning of the design modules, to effect design changes when constraint violations occur. An example from structural design illustrates the methodology.

Type
Research Article
Information
AI EDAM , Volume 1 , Issue 1 , February 1987 , pp. 59 - 71
Copyright
Copyright © Cambridge University Press 1987

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