An Improved First-Order Shear Deformation Theory for Wave Propagation Analysis in FG-CNTRC Beams Resting on a Viscoelastic Substrate

被引：77

作者：

Gawah, Qais ^{[1
]}

Bourada, Fouad ^{[2
]}

Al-Osta, Mohammed A. ^{[1
,3
]}

Tahir, Saeed I. ^{[1
]}

Tounsi, Abdelouahed ^{[1
,2
,3
,4
]}

Yaylaci, Murat ^{[5
,6
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Civil & Environm Engn, Dhahran 31261, Eastern Provinc, Saudi Arabia

[2] Univ Djillali Liabes Sidi Bel Abbes, Fac Technol, Civil Engn Dept, Mat & Hydrol Lab, Sidi Bel Abbes, Algeria

[3] KFUPM, Interdisciplinary Res Ctr Construct & Bldg Mat, Dhahran 31261, Saudi Arabia

[4] Lebanese Amer Univ, Dept Civil & Environm Engn, 309 Bassil Bldg, Byblos, Lebanon

[5] Recep Tayyip Erdogan Univ, Dept Civil Engn, TR-53100 Rize, Turkiye

[6] Recep Tayyip Erdogan Univ, Fac Turgut Kiran Maritime, TR-53900 Rize, Turkiye

来源：

INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS | 2025年 / 25卷 / 01期

关键词：

Functionally graded beams; carbon nanotube; wave propagation; viscoelastic foundation; first-order; beam theory; REINFORCED COMPOSITE PLATES; CRITICAL BUCKLING LOAD; FREE-VIBRATION; CARBON;

D O I：

10.1142/S0219455425500105

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper aims to analyze the wave propagation in functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beams placed on a viscoelastic foundation utilizing an improved first-order shear deformation theory (FSDT). The material properties are derived from the mixture rule. Four carbon nanotube distribution patterns are considered in the analysis. The extended Hamilton's Principle is utilized to derive the governing wave equations for the CNTRC beam. A comparison between the present theory results and those in the literature is conducted for validation. The wave dispersion investigation is mainly based on the phase and group velocities. The results illustrate the wave propagation responses for the different CNT configurations. In addition, the influence of the CNTs volume fraction, foundation stiffness parameters, and damping coefficient on the wave characteristics is examined.

引用

页数：25

共 40 条

[1] Static analysis of functionally graded carbon nanotube-reinforced composite plate embedded in piezoelectric layers by using theory of elasticity [J].