Study of biaxial stress transfer in multilayer composites under uniaxial or biaxial tensile loading

IF 2.3 3区 工程技术 Q2 MECHANICS Acta Mechanica Pub Date : 2024-09-27 DOI:10.1007/s00707-024-04100-z
Si-Yu Guo, Hui-Ying Zhang, Yan-Gao Hu
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Abstract

This paper establishes a two-dimensional (2-D) shear-lag model applicable to multilayer composites, aiming to analyze the stress transfer mechanism in multilayer composites under uniaxial or biaxial tensile loading. Semi-analytical solutions for the normal stress and shear stress are provided under the assumption of elastic interface conditions. An example of patch-reinforced composites is used to provide semi-analytical solutions for the normal stress and shear stress under the assumption of elastic interface conditions. The study investigated the influence of material parameters on the stress distribution within each layer of multilayer composites, including the thickness ratio, the difference in Poisson’s ratio, the thickness of the adhesive layer, the aspect ratio, and the number of layers. The results indicate that the stress distribution solutions predicted by the proposed 2-D model are in good agreement with finite element results. This model provides an effective solution method for the 2-D stress problem in multilayer composites.

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单轴或双轴拉伸加载下多层复合材料的双轴应力传递研究
本文建立了适用于多层复合材料的二维(2-D)剪切滞后模型,旨在分析单轴或双轴拉伸载荷下多层复合材料的应力传递机制。在弹性界面条件假设下,提供了法向应力和剪切应力的半解析解。以贴片增强复合材料为例,提供了假设弹性界面条件下法向应力和剪切应力的半解析解。研究调查了材料参数对多层复合材料各层内部应力分布的影响,包括厚度比、泊松比差异、粘合剂层厚度、长宽比和层数。结果表明,所提出的二维模型预测的应力分布解与有限元结果非常吻合。该模型为多层复合材料中的二维应力问题提供了一种有效的求解方法。
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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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