使用正交各向同性芯简化和基于有限元法的方法对蜂窝夹芯板进行高效均质化:比较研究

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Journal of Composite Materials Pub Date : 2024-03-07 DOI:10.1177/00219983241240472
Hojjat Mousavi, Cyrus Amini
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引用次数: 0

摘要

复合材料,尤其是蜂窝复合材料,因其对冲击的高能量吸收能力和优异的强度重量比,被广泛应用于包括航空航天在内的各行各业。本研究旨在利用这些材料的塑性和弹性特性,开发一种简化的数值模型,将各向同性特性纳入芯材建模。这样就无需进行详细的蜂窝结构建模,从而减少了计算成本和时间。根据可靠来源的实验数据(各向同性模型)及其等效有限元模型(正交模型),提出了一个考虑到结构复杂性的综合三维有限元模型。实验结果对模型进行了验证,证明二者具有良好的一致性。研究还调查了球形和圆柱形弹丸在低速撞击情况下的能量吸收、核心和表面的内能、最大位移和最大接触力等参数。这些研究结果凸显了正交模型的有效性,尤其是在受到圆柱形撞击时,夹芯板芯部的能量吸收能力更强。
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Efficient homogenization of honeycomb sandwich panels using orthotropic core simplification and Finite Element Method-based method: A comparative study
Composite materials, particularly honeycomb composites, are widely utilized in various industries, including aerospace, due to their high energy absorption against the impact and exceptional strength-to-weight ratio. This study aims to leverage the plastic and elastic properties of these materials to develop a simplified numerical model that incorporates orthotropic properties for core modeling. By doing so, the need for detailed honeycomb structure modeling is eliminated, resulting in reduced computational costs and time. A comprehensive three-dimensional finite element model, accounting for structural intricacies, is presented based on experimental data from a reputable source (isotropic model) and its equivalent finite element model (orthotropic model). The model is validated by the experimental results, demonstrating good agreement. The study also investigates parameters such as energy absorption, the internal energy of the core and faces, maximum displacement, and maximum contact force under low-velocity impact scenarios with spherical and cylindrical projectiles. These findings highlight the effectiveness of the orthotropic model, particularly in showcasing greater energy absorption in the core of the sandwich panel when subjected to a cylindrical impactor.
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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