Experimental and theoretical results for bending and buckling of a five-layer sandwich plate reinforced by carbon nanotubes/carbon nanorods/graphene platelets/shape memory alloy based on RFSDT

IF 2.2 3区工程技术 Q2 MECHANICS

Archive of Applied Mechanics Pub Date : 2024-06-13 DOI:10.1007/s00419-024-02630-5

Alireza Noruzi, Mehdi Mohammadimehr, Fatemeh Bargozini

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Abstract

In this research, experimental and theoretical results for bending and buckling of a five-layer sandwich plate with composite face sheets reinforced by carbon nanotubes (CNTs), carbon nanorods, graphene platelets (GPLs), or nitinol shape memory alloy (SMA) wire and foam core are studied. The equations of equilibrium for this sandwich plate based on RFSDT and the principle of minimum total potential energy are derived, and then, the transverse displacement and buckling load are obtained. Using the rule of mixture and the Halpin–Tsai equation, the mechanical properties of the reinforced composite face sheets are calculated and also, and the constitutive equations of the SMA are presented according to the Brinson model. As well as, the influence of various parameters including thickness ratio, aspect ratio, the volume fraction of CNTs, GPLs, and nitinol SMA wire, fiber placement angle, and temperature changes are investigated on transverse deformation and dimensionless critical buckling load. Finally, tensile and buckling experimental tests were performed according to the standard tests ASTM D 3039 and ASTM C 364, respectively.

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基于 RFSDT 的碳纳米管/碳纳米棒/石墨烯微粒/形状记忆合金加固的五层夹层板弯曲和屈曲的实验和理论结果

本研究研究了由碳纳米管 (CNT)、碳纳米管、石墨烯平板 (GPL) 或镍钛诺形状记忆合金 (SMA) 线材和泡沫芯材增强的复合材料面层五层夹层板的弯曲和屈曲的实验和理论结果。根据 RFSDT 和最小总势能原理推导出了这种夹层板的平衡方程，然后求出了横向位移和屈曲载荷。利用混合法则和 Halpin-Tsai 方程，计算了增强复合材料面片的力学性能，并根据 Brinson 模型提出了 SMA 的构成方程。此外，还研究了各种参数（包括厚度比、长宽比、CNT、GPL 和镍钛诺 SMA 线的体积分数、纤维放置角度和温度变化）对横向变形和无量纲临界屈曲载荷的影响。最后，分别按照标准试验 ASTM D 3039 和 ASTM C 364 进行了拉伸和屈曲实验测试。

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来源期刊

Archive of Applied Mechanics 物理-力学

CiteScore

4.40

自引率

10.70%

发文量

234

审稿时长

4-8 weeks

期刊介绍： Archive of Applied Mechanics serves as a platform to communicate original research of scholarly value in all branches of theoretical and applied mechanics, i.e., in solid and fluid mechanics, dynamics and vibrations. It focuses on continuum mechanics in general, structural mechanics, biomechanics, micro- and nano-mechanics as well as hydrodynamics. In particular, the following topics are emphasised: thermodynamics of materials, material modeling, multi-physics, mechanical properties of materials, homogenisation, phase transitions, fracture and damage mechanics, vibration, wave propagation experimental mechanics as well as machine learning techniques in the context of applied mechanics.