Vibration Suppression of Smart FGM Cylindrical Shells Using Magnetostrictive Layers
الموضوعات : فصلنامه شبیه سازی و تحلیل تکنولوژی های نوین در مهندسی مکانیک
منصور درویزه
1
(استاد، دانشگاه ، دانشکدة فنی.)
رضا انصاری
2
(استادیار، دانشگاه گیلان، دانشکدة فنی.)
ابوالفضل درویزه
3
(استاد، دانشگاه گیلان، دانشکدة فنی)
رضا رجبیه فرد
4
(دانشجوی کارشناسی ارشد- دانشگاه آزاد اسلامی واحد دانشجوی کارشناسی ارشد- دانشگاه آزاد اسلامی واحد تهران جنوب..)
الکلمات المفتاحية: Vibration attenuation, FGM Shells, Magnetostrictive layers, Velocity feedback control,
ملخص المقالة :
In the present work, FGM shells integrated with magnetostrictive layers acting as distributed sensors and actuators are modeled to control vibration attenuation of FGM shells with simply supported boundaryconditions. To achieve a mechanism for actively control of the oscillation amplitude of the integrated structure, a negative velocity proportional feedback control law is implemented in the study. Theoretical formulation is based on the first order shear deformation shell theory, taking into consideration transverse shear deformation and rotary inertia effects. Material properties are assumed to be temperature-dependent and graded in the thickness direction according to different volume fraction functions. A FGM cylindrical shell made up of a mixture of ceramic and metal is considered. The magnetostrictive layers are also considered to be made of Terfenol-D. The influence of vibration attenuation characteristics of magnetostrictive layers, the location of these layers and control parameters on vibration suppression is investigated.
[1] Ansari R., Darvizeh M., Prediction of Dynamic Behaviour of FGM Shells Under Arbitrary Boundary Conditions, J. Composite Structures, (Article in press).
[2] Kumar J.S., Ganesan N., Swarnamani S. and Padmanabhan, C., Active control of cylindrical shell with magnetostrictive layer, J. Sound & Vibration, 262, pp. 577-589.
[3] Reddy J.N., Mechanics of laminated composite plates and shells, 2004, CRC Press LLC.
Pradhan S.C, Vibration suppression of FGM shells using embedded magnetostrictive layers, Int. J. Solid and Structures, Vol. 42, pp. 2465-2488
