Vibration characteristics of a sandwich plate with viscoelastic auxetic core and graphene nanoplatelets reinforced skins

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2024-12-11 DOI:10.1007/s43452-024-01072-8

Nima Namazinia, Akbar Alibeigloo, Mahsa Karimiasl

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Abstract

The present research aims to examine the free vibrational behavior of a sandwich plate comprising a viscoelastic auxetic core and functionally graded graphene nanoplatelets reinforced composite (FG-GPLRC) face layers, which are rested on a Winkler–Pasternak foundation. The macro-mechanical characteristics of the plate’s skins have been determined utilizing the Halpin–Tsai theory. Additionally, for the core layer, besides the features characterized using Gibson’s model, the Zener model is employed to describe its viscoelastic behavior. The equations of motion for the sandwich plate were derived based on Reddy’s third-order shear deformation theory (TSDT), and they were solved using the Galerkin method. To validate the numerical results of the current study, they have been compared with findings documented in prior ones. Overall, the effects of several parameters such as geometrical parameters, various GPL distribution patterns, boundary conditions, Winkler–Pasternak coefficients, and the volume fractions of GPL have been investigated on the natural frequency and loss factor of the sandwich plate.

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粘弹性增氧芯和石墨烯纳米片增强皮夹层板的振动特性

本研究旨在研究基于Winkler-Pasternak地基的夹层板的自由振动行为，该夹层板由粘弹性增韧核心和功能梯度石墨烯纳米片增强复合材料（FG-GPLRC）面层组成。利用Halpin-Tsai理论确定了板皮的宏观力学特性。此外，对于核心层，除了采用Gibson模型表征的特征外，还采用Zener模型来描述其粘弹性行为。基于Reddy三阶剪切变形理论（TSDT）推导了夹层板的运动方程，并采用伽辽金法进行了求解。为了验证当前研究的数值结果，将它们与先前研究的结果进行了比较。总体而言，研究了几何参数、各种GPL分布模式、边界条件、Winkler-Pasternak系数和GPL体积分数等参数对夹层板固有频率和损耗因子的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.