Quasi-3D theory for the vibration of a magnetostrictive laminated plate on elastic medium with viscoelastic core and faces

2021 ◽  
Vol 257 ◽  
pp. 113091
Author(s):  
Ashraf M. Zenkour ◽  
Hela D. El-Shahrany
Keyword(s):  
Elastic Medium ◽  
Laminated Plate ◽  
Viscoelastic Core

Ultra-thin films effects on vibro-acoustic behaviour of laminated plate including a viscoelastic core

2019 ◽  
Vol 147 ◽  
pp. 121-132 ◽  
Author(s):  
Belaid Bouzouane ◽  
Ameni Ghorbel ◽  
Ali Akrout ◽  
Moez Abdennadher ◽  
Taoufik Boukharouba ◽  
...  
Keyword(s):  
Thin Films ◽  
Laminated Plate ◽  
Acoustic Behaviour ◽  
Viscoelastic Core

Active control of a sandwich plate with reinforced magnetostrictive faces and viscoelastic core, resting on elastic foundation

2021 ◽  
pp. 1045389X2110530
Author(s):  
Ashraf M Zenkour ◽  
Hela D El-Shahrany
Keyword(s):  
Elastic Foundation ◽  
Vibration Suppression ◽  
Vibration Damping ◽  
Laminated Plate ◽  
Control Value ◽  
Aspect Ratios ◽  
Half Wave ◽  
Viscoelastic Core ◽  
Foundation Parameters ◽  
And Control

The current study presents a vibration investigation of a laminated plate considering a viscoelastic core with embedded magnetostrictive layers. The simply-supported plate is supported via Pasternak’s substrate medium. Based on different plate theories and employing Hamilton’s principle, the system of governing differential equations is derived. The mechanical properties of the viscoelastic core are described depend on the time varies based on Kelvin–Voigt model. Actuating magnetostrictive layers are utilized to control the vibration damping process of the system with the assistance of feedback and constant gain distributed control. The analytical solution is obtained to investigate the influence of half wave numbers, thickness ratios, core thickness, aspect ratios, lamination schemes, elastic foundation parameters, damping coefficient, feedback coefficient magnitude, magnetostrictive layers location, on the vibrational behavior of laminated plate. Some observations about the vibration damping process of the present plate are displayed. The results refer to that the vibration suppression rate depends on the thickness of the plate, the feedback control value, the foundation constants, and the viscoelastic structural damping significantly. Moreover, the study can be providing benchmark tests to validate future contributions on the viscoelastic smart structural issues and developing the design of smart viscoelastic structures and control of their vibrations.

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