TJ639 : Primary Resonance Analysis of FG Cylindrical Shells Subjected to External Excitations
Thesis > Central Library of Shahrood University > Mechanical Engineering > MSc > 2019
Authors:
Aliakbar Bayat [Author], Amir Jalali[Supervisor], Habib Ahmadi[Supervisor]
Abstarct: The nonlinear vibration control of FG (functionally graded) laminated piezoelectric cylindrical shells under combined parametric and external excitations are presented baxsed on Hamilton’s principle, FSTD (first-order shear deformation theory), Von Karman nonlinear theory. The coupled nonlinear differential equations with two modes are obtained using multiterm Galerkin method and static condensation method. The thin piezoelectric laxyers are embedded on inner and outer surface of FG laminated cylindrical shell as distributed sensor and actuator, which are used to control nonlinear vibration of the system. Constant-gain negative velocity feedback approach is used for active nonlinear vibration control. The method of multiple scale is applied to solve the coupled nonlinear differential equations having both quadratic and cubic nonlinearities. The effect of different parameters on the nonlinear vibrations are discussed.
Keywords:
#Resonance Analysis #Cylindrical Shell #Nonlinear Vibrations #The Method of Multiple Scale (MMS) #Functionally Graded (FG) #Piezoelectric Link
Keeping place: Central Library of Shahrood University
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