A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental and numerical investigation of low velocity impact response of foam concrete filled auxetic honeycombs
Abstract 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.
Highlights The performance of auxetic honeycombs filled with foam concrete subjected to low velocity impact is tested and simulated. The interaction between the auxetic honeycomb and foam concrete reinforces each other, making them to work in synergy. The auxeticity of the foam concrete filled re-entrant honeycombs decreases with increasing compression speed.
Experimental and numerical investigation of low velocity impact response of foam concrete filled auxetic honeycombs
Abstract 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.
Highlights The performance of auxetic honeycombs filled with foam concrete subjected to low velocity impact is tested and simulated. The interaction between the auxetic honeycomb and foam concrete reinforces each other, making them to work in synergy. The auxeticity of the foam concrete filled re-entrant honeycombs decreases with increasing compression speed.
Experimental and numerical investigation of low velocity impact response of foam concrete filled auxetic honeycombs
Zhou, Hongyuan (author) / Jia, Kuncheng (author) / Wang, Xiaojuan (author) / Xiong, Ming-Xiang (author) / Wang, Yonghui (author)
Thin-Walled Structures ; 154
2020-06-04
Article (Journal)
Electronic Resource
English
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