Vibration characteristics of functionally graded graphene reinforced porous composite stepped cylindrical shell

被引：0
|
作者：
Xu H. [1 ]
Wang Y. [1 ]
Xu Z. [1 ]
Jia X. [1 ]
Yu X. [1 ]
机构：
[1] School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 07期
关键词：
first-order shear deformation theory; graphene reinforcement; Jacobi-Ritz method; porous composite; stepped cylindrical shell;
D O I：
10.13465/j.cnki.jvs.2024.07.033
中图分类号：
学科分类号：
摘要：
Here, vibration characteristics of functionally graded graphene platelet reinforced porous composite (FG-GPLRPC) stepped cylindrical shell were studied. Firstly, effective material properties of FG-GPLRPC stepped cylindrical shell were obtained using Halpin-Tsai micromechanical model and the open-cell body theory. Secondly, based on the first-order shear deformation theory and the penalty parameter method, the energy expression of shell structure was derived. Finally, Jacobi-Ritz method was used to establish vibration governing equations of shell structure to solve dimensionless natural frequencies of shell structure, and verify the effectiveness and correctness of the proposed method. The results showed that mass fraction of graphene, pore coefficient and boundary spring stiffness value have a significant impact on vibration characteristics, while number of layers has a smaller impact on vibration characteristics; effects of size parameters on vibration characteristics are different; the variation law of shell natural frequencies decreasing firstly and then increasing with increase in circumferential wave number is obtained. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：317 / 326
页数：9
相关论文
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