In-plane and out-of-plane quasi-static compression performance enhancement of 3D printed re-entrant diamond auxetic metamaterial with geometrical tuning and fiber reinforcement

作     者：Niranjan Chikkanna Shankar Krishnapillai Velmurugan Ramachandran Niranjan Chikkanna;Shankar Krishnapillai;Velmurugan Ramachandran

作者机构：Department of Mechanical EngineeringIndian Institute of Technology Madras600036India Department of Aerospace EngineeringIndian Institute of Technology Madras600036India 

出 版 物：《Defence Technology(防务技术)》 (Defence Technology)

年 卷 期：2023年第25卷第7期

页      面：1-17页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Universiti Teknologi Malaysia  UTM 

主　　题：Auxeticity Fibre reinforcement Tailorability Anisotropy Geometrical influence Property enhancement 

摘      要：Auxetic materials are cellular materials with a unique property of negative Poisson’s *** auxeticity and performance of these metamaterials utterly depend on the geometrical parameters and loading *** the first time,the quasi-static uniaxial compression performance of fused filament fabricated re-entrant diamond auxetic metamaterial is evaluated in the x-direction(in-plane)and z-direction(out-of-plane).The most commonly used thermoplastic feedstock,Acrylonitrile butadiene styrene,is considered a material of *** effect of influential geometrical parameters of the re-entrant diamond structure and printing parameter is systematically studied using Taguchi’s design of ***-based multi-objective optimisation technique has been adopted to arrive at the optimal *** are made to improve the stiffness and strength of the structure with fibre *** glass fibre reinforcements have enhanced specific strength and stiffness in both in-plane and out-ofplane directions.A sevenfold and thirteen times increase in specific strength and energy absorption is evident for glass fibre-reinforced structures in out-of-plane directions compared to in-plane *** tuning of geometrical parameters of the re-entrant diamond structure can result in a Poisson’s ratio of up to-3.49 when tested in the *** parametric study has illustrated the tailorability of the structure according to the application *** statistical study has signified each considered parameter’s contribution to the compression performance characteristics of the 3D printed re-entrant diamond auxetic metamaterial.