Theoretical investigation on vibration frequency of sandwich plate with PFRC core and piezomagnetic face sheets under variable in plane load

AuthorsA. Ghorbanpour Arani, Z. khoddami Maraghi, M. Ferasatmanesh
JournalStructural Engineering and Mechanics
Page number65
Volume number63
IFثبت نشده
Paper TypeFull Paper
Published At2017-01-25
Journal GradeScientific - research
Journal TypeElectronic
Journal CountryIran, Islamic Republic Of
Journal IndexSCOPUS ,ISI-Listed

Abstract

This research investigated the vibration frequency of sandwich plate made of piezoelectric fiber reinforced composite core (PFRC) and face sheets of piezomagnetic materials. The effective electroelastic constants for PFRC materials are obtained by the micromechanical approach. The resting medium of sandwich plate is modeled by Pasternak foundation including normal and shear modulus. Besides, sandwich plate is subjected to linearly varying normal stresses that change by load factor. The coupled equations of motion are derived using first order shear deformation theory (FSDT) and energy method. These equations are solved by differential quadrature method (DQM) for simply supported boundary condition. A detailed numerical study is carried out based on piezoelectricity theory to indicate the significant effect of load factor, volume fraction of fibers, modulus of elastic foundation, core-to-face sheet thickness ratio and composite materials on dimensionless frequency of sandwich plate. These findings can be used to aerospace, building and automotive industries.

tags: composites; ffiber reinforced; numerical method; plate structures; dynamic analysis