COMPUTATIONAL OPTIMIZATION OF DAMPED VIBRATION ABSORBER FOR DAMPED PRIMARY SYSTEM UNDER HARMONIC FORCED EXCITATION

سال انتشار: 1397
محل انتشار: سومین کنفرانس بین المللی مهندسی مکانیک و هوافضا
کد COI اختصاصی: MECHAERO03_208
زبان مقاله: انگلیسی
تعداد مشاهده: 554

نویسندگان

Department of Mechanical Engineering, East Azarbaijan Science and Research Branch, Islamic Azad University,Tabriz, Iran.

Amir Abdollah Ghaderi

Department of Mechanical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.

چکیده

The present study is aimed to design a damped dynamic vibration absorber to reduce vibrations of a damped one-DOF (degree of freedom) using evolutionary algorithms and compare them with each other. The main system was excited by a harmonic force. The equations governing the main system have been demonstrated as a matrix using Newton’s second law. Since values of the parameters of the primary system were constant, a domain (upper/lower bound) was considered for parameters of the absorber including absorber mass, damping, and stiffness. system. Using the optimization criterion H2 and two optimization algorithms, namely GA (genetic algorithm) and ICA (imperialist competitive algorithm), values of mass, stiffness, and damping were obtained for the assumed configuration and then compared with each other. Based on the obtained results, it was observed that ICA had better performance than GA.

کلیدواژه ها

Dynamic vibration absorber, imperialist competitive algorithm, genetic algorithm, Harmonic forced excitation optimization, one-DOF system

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