In response to environmental challenges and the demand for sustainability, this study explores a novel engineering structure, harnessing the potential of bio-based materials within the framework of composite sandwich structures. This investigation employs finite element modeling to assess sandwich structures composed of End-grain balsa wood and fiber-reinforced polymer (FRP) facesheets. These facesheets incorporate glass, carbon, and basalt fibers, enabling a direct comparison between conventional and bio-based materials. Mechanical responses are evaluated under numerical flexural loading using Abaqus/Implicit, with a specialized wood material model integrated via a User Material (UMAT) subroutine. A 2D Hashin failure criterion assesses FRP facesheets. Intriguingly, findings indicate minimal influence from FRP on structural performance, while balsa wood and the core-casings interface emerge as decisive factors.

中文翻译：

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用于结构海洋应用的可持续轻木和玄武岩复合夹层的计算评估

为了应对环境挑战和对可持续性的需求，本研究探索了一种新颖的工程结构，在复合夹层结构的框架内利用生物基材料的潜力。这项研究采用有限元建模来评估由端纹轻木和纤维增强聚合物 （FRP） 面板组成的夹层结构。这些面板采用玻璃、碳和玄武岩纤维，可以直接比较传统材料和生物基材料。使用 Abaqus/Implicit 在数值弯曲载荷下评估机械响应，并通过用户材料 （UMAT） 子程序集成专用木材材料模型。2D Hashin 失效标准评估 FRP 面板。有趣的是，研究结果表明 FRP 对结构性能的影响很小，而轻木和芯套界面成为决定性因素。