Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of elevated temperature on the out-of-plane compressive properties of nickel based pyramidal lattice truss structures with hollow trusses
Abstract In this study, the effect of elevated temperatures on the out-of-plane properties of nickel based pyramidal lattice truss structures with hollow trusses were investigated through theoretical analysis, experimental measurements and numerical prediction. It is found that, with the increase of temperature from 25 °C to 450 °C, the compressive strength, compressive modulus and energy absorption capacity of the sandwich structures fabricated via SLM additive manufacturing decrease by 37.98%, 33.25% and 38.36%, respectively. The theoretically predicted failure modes and compressive strength of the hollow lattice truss cores are in well agreement with experimental measurements and numerical predictions. Comparison with competing lightweight sandwich constructions reveals that the nickel based pyramidal lattice truss structure with hollow truss exhibits superiority in the specific strength under high temperature.
Highlights The nickel based pyramidal lattice structures with hollow trusses were fabricated by using selective laser melting. With the increase of temperature, the compressive strength and energy absorption capacity of sandwich structures decrease. The hollow lattice truss is more prone to buckling failure at high temperature. The hollow pyramidal lattice core exhibit structural preponderance at high temperature.
Effect of elevated temperature on the out-of-plane compressive properties of nickel based pyramidal lattice truss structures with hollow trusses
Abstract In this study, the effect of elevated temperatures on the out-of-plane properties of nickel based pyramidal lattice truss structures with hollow trusses were investigated through theoretical analysis, experimental measurements and numerical prediction. It is found that, with the increase of temperature from 25 °C to 450 °C, the compressive strength, compressive modulus and energy absorption capacity of the sandwich structures fabricated via SLM additive manufacturing decrease by 37.98%, 33.25% and 38.36%, respectively. The theoretically predicted failure modes and compressive strength of the hollow lattice truss cores are in well agreement with experimental measurements and numerical predictions. Comparison with competing lightweight sandwich constructions reveals that the nickel based pyramidal lattice truss structure with hollow truss exhibits superiority in the specific strength under high temperature.
Highlights The nickel based pyramidal lattice structures with hollow trusses were fabricated by using selective laser melting. With the increase of temperature, the compressive strength and energy absorption capacity of sandwich structures decrease. The hollow lattice truss is more prone to buckling failure at high temperature. The hollow pyramidal lattice core exhibit structural preponderance at high temperature.
Effect of elevated temperature on the out-of-plane compressive properties of nickel based pyramidal lattice truss structures with hollow trusses
Zhang, Zhi-jia (Autor:in) / Zhang, Qian-cheng (Autor:in) / Huang, Lei (Autor:in) / Zhang, De-zhi (Autor:in) / Jin, Feng (Autor:in)
Thin-Walled Structures ; 159
27.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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