Honeycombs based composites are applied in a wide spectrum of applications. In the present study, the performance of novel foam concrete filled auxetic aluminium honeycombs subjected to quasi-static and low velocity compression is experimentally and numerically investigated. The response mode, crushing resistance and energy absorption capacity of hollow and foam concrete filled auxetic honeycombs are experimentally studied under quasi-static and low velocity loading. Numerical models, validated with the test results, are employed in parametric study to further examine the performance. If properly designed, the interaction between the auxetic honeycomb and foam concrete reinforces each other, making the two components to work in synergy. It is found that the response modes of the composites change from compression failure with low peak stress and stable plateau stress to shear failure with high peak stress and severely fluctuated plateau stress with increasing foam concrete density. The response of foam concrete filled honeycombs gradually transforms from the quasi-static mode with global deformation to dynamic mode with localized crushing near loading end, and the effective Poisson's ratio of the composites decreases, both with increasing compression speed.

蜂窝状复合材料的应用范围很广。在本研究中，通过实验和数值研究了新型泡沫混凝土填充的膨胀铝蜂窝的准静态和低速压缩性能。在准静态和低速载荷作用下，对空心泡沫混凝土填充蜂窝的响应模式，抗压强度和能量吸收能力进行了实验研究。通过测试结果验证的数值模型被用于参数研究中以进一步检查性能。如果设计正确，则可膨胀蜂窝和泡沫混凝土之间的相互作用会彼此增强，使这两个组件协同工作。研究发现，随着泡沫混凝土密度的增加，复合材料的响应模式从具有低峰值应力和稳定的平台应力的压缩破坏变为具有高峰值应力和严重波动的平台应力的剪切破坏。泡沫混凝土填充蜂窝的响应逐渐从整体变形的准静态模式转变为在载荷端附近局部破碎的动态模式，并且随着压缩速度的增加，复合材料的有效泊松比降低。