Evaluation of energy absorption enhancement of additively manufactured polymer composite lattice structures

IF 3.1 Q2 MATERIALS SCIENCE, COMPOSITES

Functional Composites and Structures Pub Date : 2023-01-01 DOI:10.1088/2631-6331/acc0d0

Praveen Kumar A, Quanjin Ma

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引用次数: 2

Abstract

The unique compressive behaviour of lattice cubic structures as well as their high specific strength and significant energy absorbing characteristics makes them an attractive solution for crashworthiness applications. Hence in this research study, the crashworthiness behaviour and energy absorbing characteristics of the thermoplastic polymer composite lattice cubic structures were experimentally investigated under quasi-static compression. Four design patterns such as Cuboctahedron, Kelvin cell, Truncated cube in square and dividend square geometrics were considered and fabricated through fused deposition modelling technique. The proposed structures were additively manufactured with four different thermoplastic polymer based filament materials and their influence on the crashworthiness characteristics were investigated experimentally. The obtained results revealed that the PLA-CF based KC configuration exhibited SEA of 2.50 kJ g−1 and the maximum value of CFE is 84.91% for PETG-CF based KC configuration. Furthermore, the experimental results indicated that the proposed thermoplastic polymer composite based lattice cubic structures are potentially a suitable component for crashworthiness applications owing to their significant energy absorption ability.

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增材制造聚合物复合材料晶格结构的能量吸收增强评价

晶格立方结构独特的压缩性能以及高比强度和显著的吸能特性使其成为耐撞应用的有吸引力的解决方案。因此，本研究对热塑性聚合物复合材料晶格立方结构在准静态压缩下的耐撞性能和吸能特性进行了实验研究。采用熔融沉积建模技术，研究了长方体、开尔文单元、正方形截方和红利正方形四种几何形状。采用四种不同的热塑性聚合物基长丝材料增材制造了该结构，并对其耐撞性能的影响进行了实验研究。结果表明，PLA-CF基KC构型的SEA为2.50 kJ g−1,PETG-CF基KC构型的CFE最大值为84.91%。此外，实验结果表明，基于晶格立方结构的热塑性聚合物复合材料具有显著的能量吸收能力，是一种潜在的适合耐碰撞应用的组件。

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来源期刊

Functional Composites and Structures Materials Science-Materials Science (miscellaneous)

CiteScore

4.80

自引率

10.70%

发文量