Open AccessBuckling Analyses of Edge-cracked Functionally Graded Graphene Reinforced Composite Piezoelectric Beam
Author(s) -
Lucun Guo,
Jiajia Mao,
W Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1906/1/012042
Subject(s) - materials science , beam (structure) , buckling , composite material , bending stiffness , stiffness , timoshenko beam theory , bending , enhanced data rates for gsm evolution , structural engineering , graphene , ritz method , piezoelectricity , composite number , mathematics , boundary value problem , mathematical analysis , engineering , telecommunications , nanotechnology
This paper investigates the buckling behaviors of edge-cracked functionally graded graphene reinforced composite (FG-GRC) beam with piezoelectric actuators. The bending stiffness of the crack section is equivalent to the bending stiffness of massless rotational spring. The modified Halpin-Tsai model and rule of mixture are used to estimate the effective mechanical properties of the FG-GRC beam. The electro-mechanical governing equations of buckling behaviors for the edge-cracked FG-GRC beam are derived by Timoshenko beam theory, von Kármán strain displacement relationship and Ritz method. Along the thickness of the beam, both functionally graded (FG) and uniformly distributed graphene nanoplatelets (GPLs) are considered. The influences of GPL mass fraction, GPL distribution patterns, GPLs geometry, crack depth, crack location and thickness of piezoelectric layer on the buckling characters of the FG-GRC beam are studied in this paper.