Dynamic Instability of Sandwich Beams Made of Isotropic Core and Functionally Graded Graphene Platelets-Reinforced Composite Face Sheets

被引：28
|
作者：
Asgari, Gholam Reza [1 ]
Arabali, Amirbahador [2 ]
Babaei, Masoud [1 ]
Asemi, Kamran [3 ]
机构：
[1] Univ Eyvanekey, Dept Mech Engn, Eyvanekey, Semnan, Iran
[2] Islamic Azad Univ, Fac Engn, Dept Civil Engn, Cent Tehran Branch, Tehran, Iran
[3] Islamic Azad Univ, Dept Mech Engn, North Tehran Branch, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS | 2022年 / 22卷 / 08期
关键词：
Dynamic instability; sandwich beam; isotropic core; FG GPL-reinforced face sheets; Frostig theory; third-order beam theory; FREE-VIBRATION ANALYSIS; BUCKLING ANALYSIS; STABILITY; PANELS; SHELL;
D O I：
10.1142/S0219455422500924
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this study, dynamic instability of a sandwich beam made of an isotropic core and functionally graded (FG) graphene platelets-reinforced composite (GPLRC) face sheets is investigated for the first time. A Frostig theory for soft core and third-order shear deformation theory (TSDT) for sheets are used. Hamilton's principle is used to derive the governing equations of motion, and by applying Bolotin's approach, the dynamic instability regions (DIRs) are investigated. A comprehensive investigation is conducted to assess the effects of different weight fractions of nanofiller, various GPL patterns, boundary conditions, slenderness ratio, the thickness of face sheet and static load factors on the DIRs of the beam.
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收藏
页数：32
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