Dynamic analysis of a spinning visco-elastic FG graphene platelets reinforced nanocomposite sandwich cylindrical shell with MRE core

IF 2.3 3区 工程技术 Q2 MECHANICS
Ahmad A. Monajemi, Mehdi Mohammadimehr, Fatemeh Bargozini
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引用次数: 0

Abstract

This paper investigates the dynamic responses of spinning FG GPLs reinforced with a nanocomposite sandwich cylindrical shell based on a magnetorheological elastomer (MRE) core subjected to thermomechanical loading and residual stress. The sandwich cylindrical shell is considered using the Donnell–Moshtari theory based on metal matrix nanocomposites; furthermore, GPLs are used with uniform and FG distribution in the thickness direction to reinforce these layers. The MRE core layer is modeled based on FSDT. The effect of temperature on the mechanical properties of MRE, GPLs, and metal matrix nanocomposites is considered. The mechanical properties of the nanocomposite sandwich shell are obtained based on the Halpin–Tsai micromechanics model and the rule of mixture. The equations of motion for a spinning sandwich shell are obtained by considering the rotary inertia and shear effect. The frequencies of a spinning shell are derived using the Differential Quadrature Method. The effect of parameters such as weight fraction and distribution of GPLs, MRE core, spinning speed, residual stresses, and thermomechanical loading on the dynamic behavior of spinning nanocomposite sandwich shells are studied.

带 MRE 内核的旋转粘弹性 FG 石墨烯平板增强纳米复合材料夹层圆柱形外壳的动态分析
本文研究了以磁流变弹性体 (MRE) 核心为基础的纳米复合材料夹层圆柱形外壳加固的纺丝 FG GPL 在热机械载荷和残余应力作用下的动态响应。采用基于金属基纳米复合材料的 Donnell-Moshtari 理论来考虑夹层圆柱形外壳;此外,在厚度方向上使用均匀分布的 GPL 和 FG 来加固这些层。MRE 核心层的建模基于 FSDT。考虑了温度对 MRE、GPL 和金属基纳米复合材料机械性能的影响。根据 Halpin-Tsai 微机械模型和混合物规则得出了纳米复合材料夹层外壳的机械性能。通过考虑旋转惯性和剪切效应,得到了旋转夹层壳的运动方程。使用微分正交法得出了旋转壳体的频率。研究了 GPL 重量分数和分布、MRE 内核、旋转速度、残余应力和热机械载荷等参数对旋转纳米复合材料夹层壳动态行为的影响。
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
Acta Mechanica
Acta Mechanica 物理-力学
CiteScore
4.30
自引率
14.80%
发文量
292
审稿时长
6.9 months
期刊介绍: Since 1965, the international journal Acta Mechanica has been among the leading journals in the field of theoretical and applied mechanics. In addition to the classical fields such as elasticity, plasticity, vibrations, rigid body dynamics, hydrodynamics, and gasdynamics, it also gives special attention to recently developed areas such as non-Newtonian fluid dynamics, micro/nano mechanics, smart materials and structures, and issues at the interface of mechanics and materials. The journal further publishes papers in such related fields as rheology, thermodynamics, and electromagnetic interactions with fluids and solids. In addition, articles in applied mathematics dealing with significant mechanics problems are also welcome.
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