等腰梯形蜂窝玻璃钢夹芯板的侧压性能

Edgewise Compressive Property for Sandwich Panel of Steel Plates with Isosceles-trapezoid Honeycomb Core of Fiber Cloth Reinforced Epoxy Resin

使用材料试验机对等腰梯形蜂窝芯玻璃钢夹芯板面的内压缩性能进行了实验测试与模拟研究。结果表明,夹芯板面内压缩的破坏方式主要有面板折断、夹芯板屈曲失稳及面板和蜂窝脱粘。面板是夹芯板面内压缩的主要承载构件,蜂窝芯对面板起固支作用。面板的结构参数和材料参数是影响夹芯板面内压缩抗压强度与承载应力的主要因素,蜂窝芯的结构参数和材料参数对夹芯板面内压缩抗压强度的影响较小,而蜂窝芯的高度对夹芯板面内压缩承载应力有显著的影响。

The edgewise compressive property of sandwich panel of steel plates with isosceles-trapezoid honeycomb core of fiber cloth reinforced epoxy resin is measured by using a material testing machine, while a simulation mode is established to describe the edgewise compressive behavior. The edgewise compressive pressure may induce three types of damages of the sandwich panel, namely, the broken of plates, the buckling instability of the sandwich panel and the detachment of plates with the honeycomb core. Under an applied edgewise compressive pressure, the plates are the main load bearing component of the sandwich panel, while the honeycomb core acts only as a connector and supporter. The parameter related with the structure and the material of the plates has a great influence on the in-panel compressive strength and the bearing stress for the sandwich panel. In the contrast, parameter related with the structure and the material of the honeycomb core has a small influence on the compressive strength of the sandwich panel, but the height of honeycomb core has a great influence on the bearing stress of the sandwich panel.