A novel sandwich structure with bi-directional corrugated core is designed and manufactured by 3D-printing. Initial attention focuses on the compression response and failure modes of this new structure. An analytical model is developed and verified by experimental and finite element methods (FEM). As a comparison, compression properties of the conventional sandwich structure are also tested under compression loading. Results show that the corrugation bucking and fracture are the main failure modes in the flatwise compression. However, the loading in edgewise direction is mostly supported by face panels, and obvious deformation is not observed. There is no debonding between the face panels and corrugated core under the continue loading, which means a well-bonding quality is achieved. The predicted results by analytical model show good agreements with those by FEM and experimental method. It has been proved that the stretching deformation is dominating in the deformation mechanism of flatwise compression. As for the edgewise compression, it finds that the corrugations paralleled to the loading direction are the main load-bearing structure. This novel sandwich material with bi-corrugated core owns better compression properties than the conventional one with single-corrugated core.

通过3D打印设计和制造了一种新型的具有双向波纹芯的三明治结构。最初的注意力集中在这种新结构的压缩响应和破坏模式上。通过实验和有限元方法（FEM）开发并验证了分析模型。作为比较，还对常规夹层结构的压缩特性在压缩载荷下进行了测试。结果表明，波纹屈曲和断裂是平面压缩的主要破坏方式。但是，沿边缘方向的载荷主要由面板支撑，并且没有观察到明显的变形。在连续加载下，面板和瓦楞芯之间没有剥离，这意味着可以实现良好的粘合质量。分析模型的预测结果与有限元和实验方法的预测结果吻合良好。已经证明，拉伸变形在平面压缩的变形机理中起主要作用。对于边缘压缩，发现平行于加载方向的波纹是主要的承载结构。这种新型的具有双波纹芯的三明治材料比具有单波纹芯的传统三明治材料具有更好的压缩性能。