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An analytical model for wood composite sandwich beams with a biaxial corrugated core under bending

机译：弯曲下双轴波纹芯木复合夹层梁的分析模型

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摘要

In this study, an analytical model to evaluate the bending behavior of wood-based sandwich panels with a biaxial corrugated core was developed. A homogenization method was adopted to replace the geometry of the core with a homogeneous medium. Considering the deformation of the core under pure tension, compression, and shear, the properties of the homogenized core were computed. A high-order sandwich panel theory, that takes into account the deformation of the sandwich beam through the thickness, was applied to derive the governing equations. Fourier series expansions were used to solve the governing equations for a simply supported sandwich beam. The analytical results for sandwich beams with two different geometries were compared to finite element predictions and experimental results. The analytical model differed by 0.5-1.9% from the finite element model, and 1.6-7.8% with experiment.
机译：在本研究中，开发了一种分析模型，以评估木材基夹层板与双轴波纹芯的夹层板的弯曲行为。采用均质化方法用均匀培养基取代芯的几何形状。考虑到纯张力下芯的变形，压缩和剪切，计算均质核心的性质。考虑到夹层光束通过厚度的变形的高阶三明治面板理论被应用于导出控制方程。傅里叶系列扩展用于解决简单支持的夹层光束的控制方程。将具有两个不同几何形状的夹层梁的分析结果与有限元预测和实验结果进行了比较。分析模型从有限元模型的分析模型不同0.5-1.9％，实验1.6-7.8％。

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