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Quasi-static and dynamic behavior of additively manufactured metamaterial structures with layered-hybrid topologies
https://orcid.org/0000-0003-4631-8770
https://orcid.org/0000-0003-3136-5873
Abstract A layered-hybrid metamaterial structure (LHMS) composed of a bio-inspired lattice cell and a dodecagon body-centered lattice cell is proposed, for the purpose of combining the advantages of the bending-dominated and stretching-dominated structures. For the sake of investigating the mechanical performance and deformation evolution of the LHMS, compressive experiments of the specimens fabricated by laser powder bed fusion were performed via electronic universal machine, drop hammer, and Split Hopkinson Pressure Bar system. The deformation modes of the LHMS were captured by a digital camera. The experimental observations reveal that the LHMS exhibits a stable deformation mode under a large range of loading speeds. The outcomes demonstrate that the LHMS exhibits a controllable deformation mode, which has a potential serving as safety protective components. Meanwhile, numerical simulations were carried out to disclose the deformation details. Subsequently, parametric analysis was performed on the basis of the validated finite element results, aiming to discuss the mechanical performance advantage, the effect of component ratio of each sub-cell, and the effect of loading angle on the mechanical properties of the LHMS. The results indicate that the layered-hybrid design possesses superior energy absorption ability and the specific energy absorption is 25.0% and 84.7% higher compared with each individual component with the same mass. Also, the LHMS with component ratio 1.0 possesses the highest specific energy absorption of 10.64 kJ/kg, which is 32.7% and 25.9% higher than that of the LHMS with component ratio 0.7 and 1.5, respectively.
Highlights A layered-hybrid metamaterial structure (LHMS) is proposed and tested dynamically. The layered-hybrid design strategy can effectively control deformation sequence. The coupling of different cells leads to the superiority of LHMS over single cells. The component ratio in LHMS has a vital effect on energy absorption performance.
Quasi-static and dynamic behavior of additively manufactured metamaterial structures with layered-hybrid topologies
https://orcid.org/0000-0003-4631-8770
https://orcid.org/0000-0003-3136-5873
Abstract A layered-hybrid metamaterial structure (LHMS) composed of a bio-inspired lattice cell and a dodecagon body-centered lattice cell is proposed, for the purpose of combining the advantages of the bending-dominated and stretching-dominated structures. For the sake of investigating the mechanical performance and deformation evolution of the LHMS, compressive experiments of the specimens fabricated by laser powder bed fusion were performed via electronic universal machine, drop hammer, and Split Hopkinson Pressure Bar system. The deformation modes of the LHMS were captured by a digital camera. The experimental observations reveal that the LHMS exhibits a stable deformation mode under a large range of loading speeds. The outcomes demonstrate that the LHMS exhibits a controllable deformation mode, which has a potential serving as safety protective components. Meanwhile, numerical simulations were carried out to disclose the deformation details. Subsequently, parametric analysis was performed on the basis of the validated finite element results, aiming to discuss the mechanical performance advantage, the effect of component ratio of each sub-cell, and the effect of loading angle on the mechanical properties of the LHMS. The results indicate that the layered-hybrid design possesses superior energy absorption ability and the specific energy absorption is 25.0% and 84.7% higher compared with each individual component with the same mass. Also, the LHMS with component ratio 1.0 possesses the highest specific energy absorption of 10.64 kJ/kg, which is 32.7% and 25.9% higher than that of the LHMS with component ratio 0.7 and 1.5, respectively.
Highlights A layered-hybrid metamaterial structure (LHMS) is proposed and tested dynamically. The layered-hybrid design strategy can effectively control deformation sequence. The coupling of different cells leads to the superiority of LHMS over single cells. The component ratio in LHMS has a vital effect on energy absorption performance.
Quasi-static and dynamic behavior of additively manufactured metamaterial structures with layered-hybrid topologies
https://orcid.org/0000-0003-4631-8770
https://orcid.org/0000-0003-3136-5873
Abstract A layered-hybrid metamaterial structure (LHMS) composed of a bio-inspired lattice cell and a dodecagon body-centered lattice cell is proposed, for the purpose of combining the advantages of the bending-dominated and stretching-dominated structures. For the sake of investigating the mechanical performance and deformation evolution of the LHMS, compressive experiments of the specimens fabricated by laser powder bed fusion were performed via electronic universal machine, drop hammer, and Split Hopkinson Pressure Bar system. The deformation modes of the LHMS were captured by a digital camera. The experimental observations reveal that the LHMS exhibits a stable deformation mode under a large range of loading speeds. The outcomes demonstrate that the LHMS exhibits a controllable deformation mode, which has a potential serving as safety protective components. Meanwhile, numerical simulations were carried out to disclose the deformation details. Subsequently, parametric analysis was performed on the basis of the validated finite element results, aiming to discuss the mechanical performance advantage, the effect of component ratio of each sub-cell, and the effect of loading angle on the mechanical properties of the LHMS. The results indicate that the layered-hybrid design possesses superior energy absorption ability and the specific energy absorption is 25.0% and 84.7% higher compared with each individual component with the same mass. Also, the LHMS with component ratio 1.0 possesses the highest specific energy absorption of 10.64 kJ/kg, which is 32.7% and 25.9% higher than that of the LHMS with component ratio 0.7 and 1.5, respectively.
Highlights A layered-hybrid metamaterial structure (LHMS) is proposed and tested dynamically. The layered-hybrid design strategy can effectively control deformation sequence. The coupling of different cells leads to the superiority of LHMS over single cells. The component ratio in LHMS has a vital effect on energy absorption performance.
Quasi-static and dynamic behavior of additively manufactured metamaterial structures with layered-hybrid topologies
Wang, Xi (Autor:in) / Qin, Ruixian (Autor:in) / Zhang, Xu (Autor:in) / Chen, Bingzhi (Autor:in)
Thin-Walled Structures ; 183
28.11.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
On dynamic mechanical behavior of additively manufactured AlSi10Mg_200C
| British Library Online Contents | 2018
On dynamic mechanical behavior of additively manufactured AlSi10Mg_200C
| British Library Online Contents | 2018