轻型木质基互锁格栅夹芯胞元结构的力学性能

Mechanical Behavior of Lightweight Wood-Based Interlocking Grid Sandwich Cell Structure

为减少材料和制造技术对环境的不利影响,研究木质基夹芯胞元结构的力学性能,对于适应快速增长的改造房屋和预制建筑场所具有重要的现实意义。该文设计并制备3种结构形式相同组成材料不同的木质基互锁格栅夹芯胞元结构,对其进行静态压缩实验,并采用理论分析及数值模拟方法,分析其压缩强度、质量载荷比和比能量吸收特性。研究结果表明,3种胞元的力学性能均高于其组成材料的力学性能,属于轻质高强的材料结构。得到结论为,木质基互锁格栅夹芯胞元结构的芯层是承受外部作用力的主体,面板材料对胞元结构的承载能力起着重要作用。

In order to reduce the adverse effects of materials and manufacturing technology on the environment, it is of great practical significance to study the mechanical properties of wood-based sandwich cell structure to adapt to the rapid growth of reconstructed houses and prefabricated building sites. In this paper, three kinds of wood-based interlocking grid cell structures with the same structural form but different combined materials are designed and prepared. The static compression experiments are carried out, and the compression strength, mass load ratio and specific energy absorption characteristics are analyzed by theoretical analysis and numerical simulation. The results show that the mechanical properties of the three cell structures are higher than those of their combined materials, and they are light and high-strength materials. It can be concluded that the core layer of wood-based interlocking grid sandwich cell structure is the main body to bear the external force, the material of the panel plays an important role in the bearing capacity of the cell structure.