弹性地基上弹性夹层圆柱壳的振动特性分析

IF 3.5 3区材料科学 Q1 ENGINEERING, MECHANICAL

Journal of Sandwich Structures & Materials Pub Date : 2022-05-18 DOI:10.1177/10996362221101139

Bin Li, Tao Fu

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引用次数: 4

摘要

本研究工作的主要目的是对弹性地基上的饱和夹层圆柱壳结构进行振动分析。在分析中，夹层壳结构由三层组成，其中中间层由负泊松比的膨胀材料组成，两个表皮层为各向同性均质材料。根据一阶剪切变形理论和Hamilton原理提取了运动方程。采用广义微分求积法求解耦合偏微分方程的控制方程，确定了其固有频率。通过将实验结果与商业有限元软件计算结果的比较，验证了所提出的理论模型的有效性。最后，研究了几何参数和弹性地基对夹层板结构振动特性的影响。

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Analysis of vibration characteristics of auxetic sandwich cylindrical shells resting on elastic foundation

The main objective of this research work is focused on the vibration analysis of auxetic sandwich cylindrical shell structures resting on an elastic foundation. In the analysis, the sandwich shell structure is composed of three layers in which the middle layer consists of auxetic material with a negative Poisson’s ratio, and the two skin layers are isotropic homogeneous materials. The motion equation is extracted according to the first-order shear deformation theory (FSDT) and the Hamilton principle. The governing equations of coupled partial differential equations are solved by the generalized differential quadrature (GDQ) method, and the natural frequencies are determined. By comparing the experimental results with the numerical results calculated by commercial finite element software, the validity of the proposed theoretical model is verified. Finally, the influences of geometrical parameters and elastic foundation on the vibration behavior of sandwich shell structures have been investigated.

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来源期刊

Journal of Sandwich Structures & Materials 工程技术-材料科学：表征与测试

CiteScore

9.60

自引率

2.60%

发文量

审稿时长

7 months

期刊介绍： The Journal of Sandwich Structures and Materials is an international peer reviewed journal that provides a means of communication to fellow engineers and scientists by providing an archival record of developments in the science, technology, and professional practices of sandwich construction throughout the world. This journal is a member of the Committee on Publication Ethics (COPE).