克尔地基上五层层压纳米复合材料的非局部屈曲分析:精炼之字形理论方法

IF 3.5 3区 材料科学 Q1 ENGINEERING, MECHANICAL Journal of Sandwich Structures & Materials Pub Date : 2024-09-03 DOI:10.1177/10996362241280020
Yazdan Akbari Birgani, Ali Ghorbanpour Arani, Zahra Khoddami Maraghi
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引用次数: 0

摘要

本文介绍了对位于克尔地基上的五层层压纳米复合材料的屈曲分析。为了描述复合板在其厚度上的非连续行为,采用了精炼之字形理论(RZT)来确定位移场。此外,还介绍了压电电磁各向同性材料、正交复合材料和功能分级多孔材料(FGPM)的构成关系。关于纳米板中的双轴和单轴载荷,利用汉密尔顿原理推导了该纳米板的运动方程。为了研究纳米板中的小尺度效应,采用了非局部艾林根理论和非局部应变梯度理论(NSGT)来解释非局部效应。最后,使用微分正交法(DQM)求解耦合运动方程。本文介绍了新使用的 Kerr 地基及其对屈曲分析的影响。本文还研究了板尺寸、压电电磁项、边界条件和加载对无量纲临界屈曲载荷的影响。
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Nonlocal buckling analysis of five-layer laminated nanocomposites on kerr foundation: A refined zigzag theory approach
In this paper, the buckling analysis of a five-layer laminated nanocomposite resting on a Kerr foundation is presented. In order to describe the non-continuous behavior of composite plate through its thickness, the displacement field is determined using the Refined Zigzag Theory (RZT). Additionally, the constitutive relations of piezo electromagnetic isotropic materials, orthotropic composites, and Functionally Graded Porous Materials (FGPMs) are presented. With respect to Bi- and Uniaxial loading in the nanoplate, the Hamilton’s principle is utilized to derive the equation of motion of this nanoplate. To study the small-scale effect in nanoplates, both Nonlocal Eringen Theory and Nonlocal Strain Gradient Theory (NSGT) are employed to account for nonlocal effects. Finally, the coupled equations of motion are solved using the Differential Quadrature Method (DQM). This paper introduces the newly used Kerr foundation and its effect on the buckling analysis. It also investigates the influence of plate dimensions, piezo electromagnetic terms, boundary conditions, and loading on the dimensionless critical buckling load.
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来源期刊
Journal of Sandwich Structures & Materials
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
49
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).
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