کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
509983 865730 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A meta-modeling technique for the natural frequencies based on the approximation of the characteristic polynomial
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A meta-modeling technique for the natural frequencies based on the approximation of the characteristic polynomial
چکیده انگلیسی

Modal meta-models are used to approximate modal properties of structures when structural modifications are present. This paper proposes a viable meta-modeling approach which, based on the approximation of the coefficients of the characteristic polynomial, succeeds in accurately predicting the natural frequencies of the system under parameter variations in presence of veering. The obtained modal meta-model is used in combination with a procedure for efficient detection of veering and crossing phenomena without resorting to time-consuming mode tracking procedures. In this way it is possible to design a system which is safe against unexpected modal behavior.


► Approximation of modal properties of structures using meta-models.
► Prediction of the natural frequencies based on approximations of the coefficients of the characteristic polynomial.
► Detection of veering and crossing phenomena without time-consuming mode tracking procedures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volumes 102–103, July 2012, Pages 108–116
نویسندگان
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