Abstract
A model of the design process for mechanical components is presented. The proposed model uses modular knowledge bases and a hierarchical control structure. The modular structure makes it easy to update the knowledge bases with new knowledge. The modular structure also allows for painless integration of external software into the design expert system. An expert system implementation of the model, XPRING, has been developed. XPRING's design domain includes helical compression, extension, and torsion springs. XPRING incorporates computer graphics, finite element analysis, and design optimization into its design knowledge base to form a comprehensive mechanical design expert system.
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