In this paper, a shear stiffness model for corrugated-core sandwich structures is proposed. The bonding area is discussed independently. The core is thought to be hinged on the skins with torsional stiffness. The analytical model was verified by FEM solution. Compared with the previous studies, the new model can predict the valley point of the shear stiffness at which the relationship between the shear stiffness and the angle of the core changes from negative correlation to positive correlation. The valley point increases when the core becomes stronger. For the structure with a angle of the core smaller than counterpart for the valley point, the existing analytical formulations may significantly underestimate the shear stiffness of the structure with strong skins. The results obtained by some previous models may be only 10 persent of that of the present model, which is supported by the FEM model.

在本文中，提出了波纹芯夹层结构的剪切刚度模型。粘合区域单独讨论。核心被认为以扭转刚度铰接在蒙皮上。通过有限元解决方案验证了分析模型。与以往的研究相比，新模型可以预测剪切刚度与岩心角度的关系从负相关变为正相关的剪切刚度谷点。当核心变得更强时，谷点增加。对于芯角小于谷点对应物的结构，现有的分析公式可能会显着低估具有强蒙皮的结构的剪切刚度。