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A platform for research: civil engineering, architecture and urbanism
Splitting and curling collapse of metal foam core square sandwich metal tubes: Experimental and theoretical investigations
Abstract Axial splitting and curling collapse of square sandwich metal tubes with metal foam core is investigated analytically and experimentally. The square sandwich metal tube split axially and curl outward along prefabricated cracks. Axial compressive tests of square sandwich metal tubes with prefabricated cracks are conducted and deformation modes are observed. An analytical model for axial splitting and curling behavior of square sandwich metal tube considering plastic bending, crack tearing, curling, foam compression, friction is proposed. It is demonstrated the analytical predictions are in good agreement with experimental results. Influences of foam thickness, tube thickness, die angle, prefabricated crack length, and foam strength are of vital importance to axial splitting and curling of square sandwich metal tube.
Highlights A theoretical model is proposed to predict splitting and curling of sandwich tubes. Axial compression experiments are carried out and deformation modes are found. Analytical solution captures the experimental results reasonably. Effects of foam thickness, die angle are of importance to splitting and curling. The specific energy absorption of the sandwich tube is higher than single tube.
Splitting and curling collapse of metal foam core square sandwich metal tubes: Experimental and theoretical investigations
Abstract Axial splitting and curling collapse of square sandwich metal tubes with metal foam core is investigated analytically and experimentally. The square sandwich metal tube split axially and curl outward along prefabricated cracks. Axial compressive tests of square sandwich metal tubes with prefabricated cracks are conducted and deformation modes are observed. An analytical model for axial splitting and curling behavior of square sandwich metal tube considering plastic bending, crack tearing, curling, foam compression, friction is proposed. It is demonstrated the analytical predictions are in good agreement with experimental results. Influences of foam thickness, tube thickness, die angle, prefabricated crack length, and foam strength are of vital importance to axial splitting and curling of square sandwich metal tube.
Highlights A theoretical model is proposed to predict splitting and curling of sandwich tubes. Axial compression experiments are carried out and deformation modes are found. Analytical solution captures the experimental results reasonably. Effects of foam thickness, die angle are of importance to splitting and curling. The specific energy absorption of the sandwich tube is higher than single tube.
Splitting and curling collapse of metal foam core square sandwich metal tubes: Experimental and theoretical investigations
Zhang, Jianxun (author) / Guo, Haoyuan (author) / Du, Jinlong (author) / Yuan, Hui (author) / Zhu, Yuqing (author) / Qin, Qinghua (author)
Thin-Walled Structures ; 169
2021-08-18
Article (Journal)
Electronic Resource
English
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