The remarkable lightweight potential of metal/polymer/metal sandwich sheets, especially with respect to their crushing behavior in crash-relevant structural components, offers a broad field of applications. In this study, double-hat crashboxes are manufactured based on formable steel/polymer/steel (SPS) sandwich sheets and are tested under quasi-static and dynamic axial crushing conditions. The failure modes in both cases are characterized and the influence of three different trigger geometries on these crushing failure modes are investigated in detail. In addition to the experiments, the force, energy absorption and failure behavior are analyzed applying finite element modeling (FEM) with LS-Dyna. The results are validated by the experimental observations. It can be shown, that especially the mean crushing force can be predicted well even with simplification assumptions to reduce the calculation effort. Furthermore, the main failure phenomena can be represented.

金属/聚合物/金属夹芯板的巨大轻量化潜力，尤其是在与碰撞相关的结构部件中的破碎性能方面，具有广阔的应用领域。在这项研究中，基于可成形钢/聚合物/钢（SPS）夹心板制造的双帽式碰撞箱在准静态和动态轴向破碎条件下进行了测试。表征了两种情况下的破坏模式，并详细研究了三种不同触发几何形状对这些破碎破坏模式的影响。除了实验之外，还使用LS-Dyna有限元建模（FEM）分析了力，能量吸收和破坏行为。实验结果验证了结果。可以显示出来 即使是简化假设也可以很好地预测平均破碎力，以减少计算量。此外，可以表示主要的故障现象。