نوع مقاله : گرایش دینامیک، ارتعاشات و کنترل
نویسندگان
1 دانشکده مهندسی مکانیک دانشگاه خواجه نصیرالدین طوسی
2 آزمایشگاه تحقیقاتی ارتعاشات دانشکده مهندسی مکانیک دانشگاه خواجه نصیرالدین طوسی
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The free and forced vibration of rotating FGM beam with piezoelectric layer using first order shear deformation theory and fixed-free boundary condition have been studied in this article. Rayleigh-Ritz method with Chebyshev series are applied to find the natural frequencies. The results showed the natural frequencies are increased as a result of increasing angular velocity or adding piezoelectric layer. More increasing the natural frequencies are caused by applying the voltage on piezoelectric layer or by increasing hub radius. Moreover, the dynamic response of the beam cause by initial conditions is studied. The frequency of the dynamic response was very near to the first natural frequency of the beam. The results had a good agreement with known reference and Abaqus software results. Also, the influence of harmonic, step and impulse force on forced vibration of the beam has been studied. Decreasing the vibration amplitude of the beam is caused by applying angular velocity and piezoelectric voltage.
کلیدواژهها [English]