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http://dx.doi.org/10.5391/JKIIS.2002.12.1.039

Mode Truncation Method in Frequency Response Analysis  

Cho, Tae-Min (한국기술교육대학교 대학원 기계공학과)
Lee, Eun-Kyoung (한국기술교육대학교 대학원 기계공학과)
Seo, Hwa-Il (한국기술교육대학교 정보기술공학부)
Rim, Kyung-Hwa (한국기술교육대학교 제어시스템공학과)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.12, no.1, 2002 , pp. 39-43 More about this Journal
Abstract
In the frequency response analysis using a modal method, it is very important to determine the number of modes involved with the formulation of a frequency response function. Most engineers are inclined to determine mode truncation with their experience. But it is difficult for non-experts to decide the mode truncation reasonably in many problems of dynamic analyses. In this study, fuzzy theory is used to standardize the empirical determination of mode truncation so that not only the experts but also non-experts can decide a Proper mode truncation easily. Fuzzy rule base is based on the simulation results using finite element method. Numerical simulations show that the developed mode truncation method is a very effective method to choose the number of the considered modes.
Keywords
Fuzzy Theory; Frequency Response Analysis; Modal Method; Mode Truncation; Finite Element Method;
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