Investigation on Dynamic Response of Sandwich Micro-Beam with Piezo-Electric and Porous Graphene Face-Sheets and Piezo-Magnetic Core Rested on Silica Aerogel Foundation
الموضوعات :A Ghorbanpour Arani 1 , P Pourmousa 2 , E Haghparast 3 , Sh Niknejad 4
1 - Faculty of Mechanical Engineering, Department of Solid Mechanics, University of Kashan, Kashan, Iran
2 - Faculty of Mechanical Engineering, Department of Solid Mechanics, University of Kashan, Kashan, Iran
3 - Faculty of Mechanical Engineering, Department of Solid Mechanics, University of Kashan, Kashan, Iran
4 - Faculty of Mechanical Engineering, Department of Solid Mechanics, University of Kashan, Kashan, Iran
الکلمات المفتاحية: Silica aerogel, Piezo-magnetic, Thermal Loads, Porous graphene, piezo-electric,
ملخص المقالة :
In this investigation, dynamic response of sandwich micro beam with piezo-electric and porous graphene face sheets and piezo-magnetic core subjected to the electro-magneto-thermal loads is studied. Silica aerogel foundation is considered as an elastic medium. Modified strain gradient theory (MSGT) is utilized to consider the size effect. Utilizing Hamilton’s principle and zigzag deformation beam theory, equations of motion for simply-supported sandwich microbeam are derived and solved by Fourier series-Laplace transform method. The effects of various parameters such as small scale, core to face sheets ratio, temperature changes, electric fields intensity and elastic foundation on the transient response of sandwich micro-beam are investigated. As the novelty of the presented work, it should be noted that both piezo-electric and piezo-magnet layers are considered as the sensor; the micro beam is simultaneously subjected to the magnetic, electric, thermal, and mechanical loading; and the foundation is modeled based on the silica aerogel foundation model.
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