Analytical and numerical analysis of composite sandwich structures with additively manufactured lattice cores

IF 5.3 Q2 MATERIALS SCIENCE, COMPOSITES Composites Part C Open Access Pub Date : 2024-07-01 DOI:10.1016/j.jcomc.2024.100484
Emre Dereli , Jordy Mbendou II , Vidhin Patel , Christian Mittelstedt
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Abstract

In this study, an analytical and numerical analysis of a hybrid sandwich structure with a lattice core produced by additive manufacturing with composite facesheets is carried out. This paper aims to analytically calculate the mechanical behavior of the hybrid sandwich structure under three-point bending and to verify the results by the finite element method. The analytical method used in this article for the analysis of the composite sandwich structure is the First-Order Shear Deformation Theory (FSDT). The numerical analysis of the hybrid sandwich structure was performed in ANSYS. In the analyses, homogenized models of lattice structures, which had been previously validated, were employed to reduce the number of elements and thereby save time during the solution process. As a result of the study, an extensive investigation into the deformation, shear, and normal stress values of sandwich structures with lattice cores of varying aspect ratios has been carried out. The findings suggest a potential for optimization in lightweight structures, which could lead to innovative advancements in design and manufacturing processes within the aerospace and automotive sectors.

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带有添加式制造晶格芯材的复合材料夹层结构的分析和数值分析
在本研究中,我们对通过增材制造技术生产的带有复合材料面片的晶格核心的混合夹层结构进行了分析和数值分析。本文旨在分析计算混合夹层结构在三点弯曲下的力学行为,并通过有限元法对结果进行验证。本文用于分析复合材料夹层结构的分析方法是一阶剪切变形理论(FSDT)。混合夹层结构的数值分析在 ANSYS 中进行。在分析过程中,采用了之前已经验证过的均匀化晶格结构模型,以减少元素数量,从而在求解过程中节省时间。通过这项研究,我们对具有不同长宽比晶格核心的夹层结构的变形、剪切和法向应力值进行了广泛的调查。研究结果表明,轻质结构具有优化的潜力,可为航空航天和汽车行业的设计和制造工艺带来创新性的进步。
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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
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