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用于可持续轻质结构的铝木混合层压板的弯曲行为。

Bending behavior of hybrid laminates made of aluminum and wood for sustainable lightweight structures.

作者信息

Graf Eva, Matz Philipp, Auer Peter, Painer Johannes, Sommitsch Christof, Domitner Josef

机构信息

Institute of Materials Science, Joining and Forming, Research Group of Lightweight and Forming Technologies, Graz University of Technology (TUG), Inffeldgasse 11/I, 8010, Graz, Austria.

Virtual Vehicle Research GmbH (ViF), Inffeldgasse 21A, 8010, Graz, Styria, Austria.

出版信息

Sci Rep. 2025 May 12;15(1):16495. doi: 10.1038/s41598-025-99234-y.

DOI:10.1038/s41598-025-99234-y
PMID:40355664
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12069679/
Abstract

Substituting fiber-reinforced plastics (FRP) with wood-based materials significantly increases the sustainability of fiber-metal laminates (FML). Therefore, the present work compares the three-point bending behavior of simple wood laminates with that of hybrid aluminum-wood laminates. Wood laminates consisting of four layers of 1-mm-thick birch veneers were adhesive-bonded with a single 1-mm-thick sheet of commercial aluminum alloy EN AW-6016-T4. Longitudinal, transverse, and bidirectional orientations of the wood fibers were considered. Prior to three-point bending, the laminates were exposed to different moistures and temperatures. The bending behavior was analyzed in terms of (i) the maximum bending force, (ii) the bending angle at maximum bending force, and (iii) the strains monitored on the side surface of the laminates during each bending test. The simulation software LS-DYNA was used to create a finite element (FE) model of the bending procedure, which considered the experimentally determined material properties. In general, the hybrid aluminum-wood laminates showed a larger bending angle at maximum bending force than simple wood laminates. The maximum bending force of the laminates gradually decreased with increasing moisture content. The FE model was able to predict the bending behavior at different moisture and temperature conditions.

摘要

用木质材料替代纤维增强塑料（FRP）可显著提高纤维金属层压板（FML）的可持续性。因此，本研究比较了简单木质层压板与铝木混合层压板的三点弯曲行为。由四层1毫米厚的桦木单板组成的木质层压板与一张1毫米厚的商用铝合金EN AW-6016-T4薄板进行了粘结。考虑了木纤维的纵向、横向和双向取向。在三点弯曲之前，层压板暴露于不同的湿度和温度条件下。从以下方面分析弯曲行为：（i）最大弯曲力，（ii）最大弯曲力时的弯曲角度，以及（iii）在每次弯曲试验期间在层压板侧面监测的应变。使用模拟软件LS-DYNA创建了弯曲过程的有限元（FE）模型，该模型考虑了实验确定的材料特性。总体而言，铝木混合层压板在最大弯曲力时的弯曲角度比简单木质层压板大。层压板的最大弯曲力随着含水量的增加而逐渐降低。有限元模型能够预测不同湿度和温度条件下的弯曲行为。

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本文引用的文献

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Polymers (Basel). 2022 Sep 9;14(18):3771. doi: 10.3390/polym14183771.
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Modelling Inhomogeneity of Veneer Laminates with a Finite Element Mapping Method Based on Arbitrary Grayscale Images.
基于任意灰度图像的有限元映射方法对单板层压板不均匀性进行建模
Materials (Basel). 2020 Jul 5;13(13):2993. doi: 10.3390/ma13132993.