A filled thin-walled tube is an excellent energy absorption device, and its performance is closely related to the filled core material. In this paper, a porous metal-high performance concrete interpenetrating phase composites (PMCIPC) filling core material is proposed, which takes porous nickel as the matrix and high-performance concrete as the reinforcing element, trying to improve the energy absorption of thin-walled tube. Axial quasi-static compression tests were carried out on empty tube, PMCIPC and filled tube. Based on the experimental results, the effects of wall thickness and aspect ratio on the deformation and energy absorption performance of the filled tube were studied by numerical simulation. The results show that the larger wall thickness increases the energy absorption of the empty tube and the filled tube. The PMCIPC filling further improves the energy absorption capacity, and for the empty tubes with smaller wall thickness, the PMCIPC significantly increases the crushing force efficiency. When the aspect ratio (L/D) is 3.7, the deformation mode of the filled tube is Euler instability, and the performance begins to decrease sharply. Finally, a theoretical model is established to predict the mean crushing force of the filled tubes. The model results are in good agreement with the experimental results. This study provides effective guidance for the design of thin-walled structures with high energy absorption efficiency.

填充薄壁管是一种优良的能量吸收装置，其性能与填充芯材密切相关。本文提出了一种多孔金属-高性能混凝土互穿相复合材料（PMCIPC）填充芯材，该材料以多孔镍为基体，高性能混凝土为增强元素，试图提高薄壁材料的吸能性能。管子。对空管、PMCIPC 和填充管进行了轴向准静态压缩试验。基于实验结果，通过数值模拟研究了壁厚和长径比对填充管变形和吸能性能的影响。结果表明，较大的壁厚增加了空管和填充管的能量吸收。PMCIPC填充进一步提高了能量吸收能力，对于壁厚较小的空管，PMCIPC显着提高了破碎力效率。当长径比(L/D)为3.7时，填充管的变形模式为欧拉不稳定，性能开始急剧下降。最后，建立了理论模型来预测填充管的平均压碎力。模型结果与实验结果吻合较好。该研究为高吸能效率薄壁结构的设计提供了有效指导。