Application of Fuzzy Sets to Car Body Structure NVH Design 951093

The design approach described in this paper permits designers to deal with imprecisely specified parameters when using the finite element method. In this practical context, the approach allows an efficient, systematic exploration of the entire design space, and it allows designers to show a relative preference for points in that space. The heart of the approach is fuzzy set theory which we adapted for use with finite element analysis by implementing Zadeh's extension principle for implicit functions, and for functions having minima and maxima within the search space. Since the analysis can involve a large amount of computation, we investigated ways to reduce computing time -- one such employs fuzzy sensitivities and is described herein. To illustrate the approach for car body structure NVH design we include several simple but realistic examples.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.