Experimental research of compressive responses of multi-layered woven textile sandwich panels under quasi-static loading
Experimental research of compressive responses of multi-layered woven textile sandwich panels under quasi-static loading
复制标题
DOI：
10.1016/j.compositesb.2011.03.008
复制
发表时间：
2011-07
影响因子：
13.1
通讯作者：
Hualin Fan;Wei Yang;Qing Zhou
中科院分区：
文献类型：
--
作者：
Hualin Fan;Wei Yang;Qing Zhou
通过堆叠薄的单层面板来制造多层面板，以提高织造织物夹层的能量吸收能力。通过准静态压缩实验，得到了材料的应力-应变曲线，并揭示了材料的吸能机理。对于由3 mm厚的单层堆叠的多层面板，芯桩经历强度破坏，这使得面板在致密化之前具有高的承载力和应变硬化曲线。单层的增厚会引发单层堆叠的相继屈曲，从而降低了板的承载能力，并使载荷-变形曲线呈延长的锯齿形。多层结构的峰值载荷被发现是接近其构成单层，但远大于单层面板的相同厚度。然后，多层面板的变形变成单层塌陷的多个过程。多层板的能量吸收大大增强，远远超过相同厚度的单层板。
Multi-layered panels were manufactured by stacking thin monolayer panels to improve the energy absorption ability of the woven textile sandwich. Quasi-static compression experiments were conducted to get the stress–strain curves and to reveal the energy absorption mechanism. For multi-layered panels staked by monolayer of 3 mm thickness, the core piles experience the strength failure; that renders the panel high load resistance and a strain-hardening curve before the densification. The thickening of the monolayer would trigger the monolayer stack to buckle one after the other, which decreases the load resistance of the panel and renders a prolonged zigzag load–deformation curve. The peak load of the multi-layered structure is found to be close to its constituting monolayer, but much greater than a monolayer panel of the same thickness. The deformation of the multi-layered panel then becomes a multiple process of monolayer collapses. Energy absorption of the multi-layered panel is greatly enhanced and far exceeds that of the monolayer panel of the same thickness.