A design method of 3D printed auxetic structures with enhanced mechanical tunability
ZHANG Meng
XU Jiawen
CHEN Yanqiu
LIU Yu
Abstract：Auxetic materials have garnered attention due to their novel behavior under deformation and numerous other material properties,such as fracture resistance,shear resistance,and energy absorption.By integrating hyperelastic materials with auxetic structures,the highly deformable capability enables the design of structures with enhanced mechanical tunability.To this end,a design methodology for 3D printed auxetic structures with improved mechanical adjustability was proposed.The in-plane compressive behavior of the designed structures was investigated through test and numerical analyses.The results demonstrate that,compared to conventional auxetic structures,the composite material with auxetics structures exhibits higher stiffness and enhanced energy absorption performance.By further adjusting the distribution and amplitude of sinusoidal ligaments,auxetic structures with tunable energy absorption,Poisson ratio,and deformation modes were generated.This study presents a design approach for improving the mechanical properties and energy absorption of lightweight structures.
Keywords：Negative Poisson ratio3D printingAuxetic structureCompositesEnergy absorption
Publication Date：2025-07-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 101-107 )