Enhanced energy-absorbing and sound-absorbing capability of functionally graded and helicoidal lattice structures with triply periodic minimal surfaces

作     者：Miao Zhao Zhendong Li Jun Wei Chua Chong Heng Lim Xinwei Li Miao Zhao;Zhendong Li;Jun Wei Chua;Chong Heng Lim;Xinwei Li

作者机构：Department of Mechanical EngineeringNational University of SingaporeSingapore 117411Singapore Chongqing Key Laboratory of Metal Additive Manufacturing(3D Printing)Chongqing UniversityChongqing 400044China Department of Mechanical EngineeringNewcastle UniversitySingapore 567739Singapore 

基　　金：supported by the NUS R&G Postdoc Fellowship Program (No.A-0000065-76-00) the China Scholarship Council (No.202006050088) 

出 版 物：《矿物冶金与材料学报:英文版》 (International Journal of Minerals,Metallurgy and Materials)

年 卷 期：2023年第30卷第10期

页      码：1973-1985页

摘      要：Lattice structures have drawn much attention in engineering applications due to their lightweight and multi-functional *** this work,a mathematical design approach for functionally graded(FG)and helicoidal lattice structures with triply periodic minimal surfaces is *** types of lattice structures including uniform,helicoidal,FG,and combined FG and helicoidal are fabricated by the additive manufacturing *** deformation behaviors,mechanical properties,energy absorption,and acoustic properties of lattice samples are thoroughly *** load-bearing capability of helicoidal lattice samples is gradually improved in the plateau stage,leading to the plateau stress and total energy absorption improved by over 26.9%and 21.2%compared to the uniform sample,*** phenomenon was attributed to the helicoidal design reduces the gap in unit cells and enhances fracture *** acoustic properties,the design of helicoidal reduces the resonance frequency and improves the peak of absorption coefficient,while the FG design mainly influences the peak of absorption *** broad range of frequency from 1000 to 6300 Hz,the maximum value of absorption coefficient is improved by18.6%-30%,and the number of points higher than 0.6 increased by 55.2%-61.7%by combining the FG and helicoidal *** study provides a novel strategy to simultaneously improve energy absorption and sound absorption properties by controlling the internal architecture of lattice structures.

主 题 词：additive manufacturing lattice structure triply periodic minimal surface energy absorption sound absorption 

学科分类：0819[工学-海洋工程类] 0806[工学-电气类] 08[工学] 0805[工学-能源动力学] 080502[080502] 

核心收录：

D　O　I：10.1007/s12613-023-2684-8

馆 藏 号：203123978...