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Korosh Khorshidi

Korosh Khorshidi

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-7321-972X
Education: PhD.
ScopusId: 23970920600
Faculty: Engineering
Address: Arak University
Phone: 086-32625720

Research

Title
High-order Analysis of Linear Vibrations of a ModeratleyThick Sandwich Panel With an Electrorheological Core
Type
JournalPaper
Keywords
Free Vibration Sandwich Panel Electro-rheological
Year
2020
Journal Mechanics of Advanced Composite Structures
DOI
Researchers Mehdi Keshavarzian ، Mohammad Medhi Najafizadeh ، Peyman Yousefi ، Majid Alavi ، Korosh Khorshidi

Abstract

In this study, the frequency response of rectangular sandwich plates with multi-layer face sheets and electrorheological (ER) fluid cores is investigat-ed. The assumed electro-rheological fluid as a core is capable of changing the stiffness and damping of structures. To model the sandwich panel, for the first time, first-order shear deformation theory and the second Frost-ig's model are applied for the face sheets and thick cores, respectively. The studied sandwich panel is supposed to simply support boundary in all edg-es, and the Galerkin approach is implemented for discretizing the problem. In the result section, impacts of various parameters such as electric field, aspect ratio, the thickness of the ER layer, and thickness ratio on vibra-tional characteristics of the structure are discussed in detail. The obtained results highlight the notable effects of the electric field on natural frequen-cies which can make the structure flexible within the desired range. It is al-so pointed out that the dynamic behavior and stability of the system can be controlled by changing the magnitude of the ER fluid layer.