سال انتشار: ۱۳۹۱

محل انتشار: بیستمین کنفرانس سالانه مهندسی مکانیک

تعداد صفحات: ۴

نویسنده(ها):

S. A. Fazelzadeh – School of Mechanical Engineering, Shiraz University
B. Yazdanpanah – School of Mechanical Engineering, Shiraz University;

چکیده:

In this study, active flutter control of a thin-walled functionally graded piezoelectric (FGP) cantilever pipe via optimal control law is investigated. The governing equations of motion of composite functionally graded piezoelectric thin-walled pipes are derived by Hamilton’s principle. The thin-walled structure is formulated based on Rayleigh theory. Resulting partial differential equations of motion are discretized via Galerkin’s method. A linear quadratic regulator (LQR) controller is employed in order to suppress the unwanted vibration caused by system’s flutter. Finally, numerical simulation results of optimal vibration control of FGP Pipes subjected to the high temperature environment are presented for different volume fraction indices of the FGM, and various weighting matrices in performance index of the LQR Controller