کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
785115 1465347 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vibration suppression of a symmetrically cantilever composite beam using internal resonance under chordwise base excitation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Vibration suppression of a symmetrically cantilever composite beam using internal resonance under chordwise base excitation
چکیده انگلیسی

Large flexible structures can be modeled as flexible beams with an appendage. Passive, semi-active or active vibration absorber can be used as an appendage in such structures. In this paper, the performance of an oscillator consisting of mass and spring at the tip of a symmetrically cantilever composite beam is investigated under chordwise base excitation. The oscillator is located at the tip of the beam in order to relate first-order uncoupled modes of the composite beam through internal resonance. Natural frequencies which are dependent on the oscillator parameters have been selected such that two-to-one and one-to-one internal resonance can be produced. The motion of the combined system is described by a set of four non-linear coupled partial differential equations, corresponding to the four describing variables of motion. The equations of motion are then solved using the method of multiple-scales in the occurrence of two-to-one and one-to-one internal resonances. Saturation phenomenon is detected in the force modulation response at the one-to-one internal resonance. Reduction of amplitudes is shown in both frequency and force–response curves under primary resonance.


► Extracting the equation of motions for a composite beam with a vibration absorber.
► Using multiple scale for calculating two-to-one and one-to-one internal resonances.
► Finding saturation, jump and energy transfer between modes of structures.
► Verifying the obtained results with time domain data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Non-Linear Mechanics - Volume 48, January 2013, Pages 86–100
نویسندگان
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