Wide-Band Periodic Absorbing Structure Designs and 3D Printing
In the design of lightweight absorbing structures,one challenge lies in maintaining the absorbing performance while reducing weight.This paper utilized conductive acrylonitrile-butadiene-styrene copolymer(ABS)as the absorbing material to design various absorbing structures.The geometric parameters of these structures were optimized using the CST Studio Suite simulation software,and the optimized designs were fabricated using the fusion deposition molding(FDM)3D printing technology for experimental verifications.The printing parameters of conductive ABS and the absorption properties of different structures were investigated.The results indicate that the printing temperature has a certain influence on the mechanical properties of the printed samples,and the mechanical properties of printed samples are optimal at a printing temperature of 265℃.For the 3D printed honeycomb absorbing structure,it achieves a minimum reflection loss of-19.1 dB with an effective bandwidth reaching 5.4 GHz,whereas the simulations yield a minimum reflection loss of-36.9 dB and an effective bandwidth of 6.1 GHz.For the wood pile absorbing structure,it exhibits a minimum reflection loss of-21.0 dB and an effective bandwidth of 10.6 GHz,surpassing the simulated values with a minimum reflection loss of-18.3dB and an effective bandwidth of 5.9 GHz.Furthermore,the angular cone absorbing structure demonstrates a minimum reflection loss of-40.9 dB and an effective bandwidth of 12.0 GHz,whereas the simulations yield a minimum reflection loss of-35 dB and an effective bandwidth of 13.2 GHz.Additionally,different filling rates have varying effects on the absorption performances of angular cone structures.The lowest reflection loss is achieved at a filling rate of 100%.The widest effective absorption bandwidth is achieved at a filling rate of 30%.This study provides novel insights for the designs and preparations of wideband absorbing materials,and offers important valuable guidance for the developments and applications of electromagnetic wave absorption.
Fused Deposition MoldingConductive Acrylonitrile-Butadiene-Styrene CopolymerAbsorbing StructurePrinting Process
万方数据
维普
