Sandwich panels are commonly used in façades and the roofs of industrial buildings due to their well-known advantages. However, there is limited data about the in-plane behavior of the panels. Hence, this paper aimed to propose a pseudoelastic truss model to represent the effective in-plane stiffness and strength properties of the corrugated sandwich panels with a polyurethane foam core. Two separate sets of experiments (mock-up and system test) were conducted in the laboratory. The variables were the number of fasteners, sheet thickness, loading direction, and number of ribs. The number of fasteners, sheet thickness, and loading direction are the most effective parameters for the in-plane behavior. A formula was proposed to compute axial stiffness of the truss members by considering the effective parameters. Experimental results showed that the proposed robust truss model could give a good estimate of the pseudoelastic stiffness and maximum load bearing capacity of the sandwich panels.

夹芯板由于其众所周知的优点而常用于外墙和工业建筑物的屋顶。但是，有关面板的面内行为的数据有限。因此，本文旨在提出一种伪弹性桁架模型，以表示具有聚氨酯泡沫芯的瓦楞夹芯板的有效面内刚度和强度特性。在实验室中进行了两组独立的实验（模拟和系统测试）。这些变量是紧固件的数量，板的厚度，加载方向和肋的数量。紧固件的数量，片材厚度和加载方向是平面内行为的最有效参数。通过考虑有效参数，提出了计算桁架构件轴向刚度的公式。