An analytical model for wood composite sandwich beams with a biaxial corrugated core under bending
An analytical model for wood composite sandwich beams with a biaxial corrugated core under bending
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DOI：
10.1016/j.compstruct.2019.111316
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发表时间：
2019-11-15
影响因子：
6.3
通讯作者：
Smith, Lloyd
中科院分区：
文献类型：
--
作者：
Mohammadabadi, Mostafa;Yadama, Vikram;Smith, Lloyd
在这项研究中，建立了一个分析模型来评估双向波纹芯材人造板的弯曲性能。采用均匀化方法，用均匀介质代替岩心的几何形状。考虑芯材在纯拉伸、压缩和剪切作用下的变形，计算了均质芯材的性能。采用高阶夹层板理论，考虑了夹层梁沿厚度的变形，推导了控制方程。用傅立叶级数展开法求解了简支夹层梁的控制方程。对两种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。分析模型与有限元模型相差0.5~1.9%，与实验相差1.6~7.8%。
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.