کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
269361 504472 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tuned mass damper with fractional derivative damping
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Tuned mass damper with fractional derivative damping
چکیده انگلیسی

A tuned mass damper with a viscoelastic damping element applied to a single-degree-of-freedom system excited by white noise is considered. The viscoelastic damping is modelled as a force proportional to the fractional derivative of the relative displacement between the structure and the secondary mass. Optimal parameters for the tuned mass damper are obtained numerically by optimizing the effective damping ratio of the system. It is shown that the structural damping has very little influence on the optimal parameters. Furthermore, it is demonstrated that the effect of the damper is the same for different values of the fraction in the fractional derivative. This implies that this tuned mass damper with a fractional derivative damping element introduces the same reduction in the structural vibration as a conventional tuned mass damper if properly tuned. Simple approximate analytical expressions for optimal parameters are obtained by a frequency domain approach, in which the force acting between the structure and the secondary mass is assumed to be equal to the force of a conventional tuned mass damper at resonance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 28, Issue 13, November 2006, Pages 1774–1779
نویسندگان
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