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Steel and Composite Structures
  Volume 33, Number 6, December25 2019, pages 891-906

Damping and vibration response of viscoelastic smart sandwich plate reinforced with non-uniform Graphene platelet with magnetorheological fluid core
Arameh Eyvazian, Abdel Magid Hamouda, Faris Tarlochan, Saeid Mohsenizadeh and Ali Ahmadi Dastjerdi

    This study considers the instability behavior of sandwich plates considering magnetorheological (MR) fluid core and piezoelectric reinforced facesheets. As facesheets at the top and bottom of structure have piezoelectric properties they are subjected to 3D electric field therefore they can be used as actuator and sensor, respectively and in order to control the vibration responses and loss factor of the structure a proportional-derivative (PD) controller is applied. Furthermore, Halpin-Tsai model is used to determine the material properties of facesheets which are reinforced by graphene platelets (GPLs). Moreover, because the core has magnetic property, it is exposed to magnetic field. In addition, Kelvin-Voigt theory is applied to calculate the structural damping of the piezoelectric layers. In order to consider environmental forces applied to structure, the visco-Pasternak model is assumed. In order to consider the mechanical behavior of structure, sinusoidal shear deformation theory (SSDT) is assumed and Hamilton's principle according to piezoelasticity theory is employed to calculate motion equations and these equations are solved based on differential cubature method (DCM) to obtain the vibration and modal loss factor of the structure subsequently. The effect of different factors such as GPLs distribution, dimensions of structure, electro-magnetic field, damping of structure, viscoelastic environment and boundary conditions of the structure on the vibration and loss factor of the system are considered. In order to indicate the accuracy of the obtained results, the results are validated with other published work. It is concluded from results that exposing magnetic field to the MR fluid core has positive effect on the behavior of the system.
Key Words
    vibration and loss factor analysis; sinusoidal shear deformation theory; visco-piezoelectric structure; PD controller; magnetorheological fluid; graphene platelets
(1) Arameh Eyvazian, Abdel Magid Hamouda, Faris Tarlochan:
Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar;
(2) Faris Tarlochan:
Qatar Transportation and Traffic Safety Center, College of Engineering, Qatar University, Qatar;
(3) Saeid Mohsenizadeh:
School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia;
(4) Ali Ahmadi Dastjerdi:
Mechanical Engineering Department, Delft University of Technology, Delft, The Netherlands.

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