拉伸加载下单向或双向界面损伤的矩形贴片增强复合材料的应力传递分析

IF 2.3 3区 工程技术 Q2 MECHANICS
Si-Yu Guo, Yan-Gao Hu
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引用次数: 0

摘要

本文提出了一种考虑单向或双向界面损伤的改进型二维(2-D)剪切滞后模型,用于分析矩形贴片增强复合材料在拉伸载荷作用下的应力传递机制。考虑到界面正交各向异性和损伤阶段的刚度变化,提供了双向法向应力和界面剪切应力的半解析解。研究探讨了材料参数对复合材料界面损伤的影响,包括基体和贴片之间的泊松比差异、厚度比和长宽比。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之间具有良好的一致性。该模型为具有界面损伤的矩形贴片增强复合材料的二维应力问题提供了有效的解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Analysis of stress transfer in rectangular patch-reinforced composites with unidirectional or bidirectional interfacial damage under tensile loading

Analysis of stress transfer in rectangular patch-reinforced composites with unidirectional or bidirectional interfacial damage under tensile loading

This paper proposes a modified two-dimensional (2-D) shear-lag model considering unidirectional or bidirectional interfacial damage to analyze the stress transfer mechanism of rectangular patch-reinforced composites under tensile load. The semi-analytical solutions for bidirectional normal stresses and interfacial shear stresses are provided, accounting for interfacial orthotropic anisotropy and the stiffness variation in the damage stage. The study examines the influence of material parameters, including the difference in Poisson's ratios between the substrate and patch, thickness ratio, and aspect ratio, on interfacial damage in composite materials. The results show a good agreement between the stress distribution solutions predicted by the proposed 2-D model and finite element results. The model provides an effective solution to the 2-D stress problem in rectangular patch-reinforced composites with interface damage.

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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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