In this paper, the mechanical properties of Nomex® paper coated with resin and composite Nomex® honeycomb sandwich structures (CNHSS) were obtained by tensile tests and flatwise tests respectively. The fundamental mechanical properties of the Nomex® paper were used as input materials parameters of finite element model generated at meso-scale level for the CNHSS, and the mechanical properties of CNHSSs were used to validate the numerical results. Based on the test and numerical results, the theoretical equations were modified to predict the flatwise compressive buckling strength and modulus of the CNHSS. The numerical and theoretical results clearly revealed that the CNHSS had two flatwise compressive elastic moduli. However, the flatwise test can only capture the second flatwise compressive elastic modulus due to manufacturing geometric defects of the cell walls. The numerical and test results showed that the manufacturing geometric defects of the cell walls showed little influence on the ultimate flatwise compressive strength. And the modified equation can predict the flatwise compressive buckling strength and modulus of the CNHSS with sufficient accuracy.

在本文中，分别通过拉伸试验和平面试验获得了涂有树脂的 Nomex® 纸和复合 Nomex® 蜂窝夹层结构（CNHSS）的力学性能。Nomex® 纸的基本力学性能被用作 CNHSS 在中尺度级别生成的有限元模型的输入材料参数，并使用 CNHSS 的力学性能来验证数值结果。根据试验和数值结果，对理论方程进行了修正，以预测 CNHSS 的平面压缩屈曲强度和模量。数值和理论结果清楚地表明 CNHSS 具有两个平面压缩弹性模量。然而，由于细胞壁的制造几何缺陷，平面测试只能捕获第二个平面压缩弹性模量。数值和试验结果表明，单元壁的制造几何缺陷对极限平面抗压强度几乎没有影响。并且修改后的方程可以足够准确地预测CNHSS的平面压缩屈曲强度和模量。