文献类型：期刊文献

英文题名：Chirality manipulation of 3D printed gyroidal scaffolds towards mechanical properties enhancement

作者：Zhang, Yanhong[1];Zhang, Junming[2];Yang, Weidong[2];Che, Shunai[1,3];Cao, Yuanyuan[4];Han, Lu[1]

机构：[1]Tongji Univ, Sch Chem Sci & Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China;[2]Tongji Univ, Sch Aerosp Engn & Appl Mech, 100 ZhangWu Rd, Shanghai 200092, Peoples R China;[3]Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites,Shanghai Key L, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Low Dimens Mat Chem, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：96

外文期刊名：ADDITIVE MANUFACTURING

收录：;EI(收录号：20244717407972);WOS:【SCI-EXPANDED(收录号:WOS:001363680700001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 22373074; 12002238; 22472058) , National Key Research and Development Program of China (Grant No. 2022YFC2403200) , Fundamental Research Funds for the Central Universities, the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and the Shanghai Pujiang Program (2020PJD072) .

语种：英文

外文关键词：Additive manufacturing; Gyroid surface; Chirality manipulation; Interlocking geometry; Mechanical property

摘要：As the most appealing triply periodic hyperbolic surface, the gyroid (G) processes large strength-to-weight ratio and high energy absorption efficiency due to the distinctive energy distribution within its continuous saddle- shape surface. However, the structural complexity of G surface blocks the way in deeply understanding the origin of its mechanical responses. Particularly, the role of the chirality of gyroid works in its mechanical performance remains an unresolved issue. Herein, we investigate the influence of the topological structure and interlocking chiral geometry on the mechanical properties of G-related structures modeled from chirality manipulation and symmetrical modulation. Homochiral and racemic G structures from single to quadruple interlacing gyroidal networks were designed to experimentally evaluate their uniaxial compression mechanical properties, and their deformation mechanism was further conducted from finite element simulations. Our results showed that both the numbers and chirality degree of the networks significantly affect the mechanical properties of the materials. In particular, the spatially equally distributed left and right networks promote stronger mechanical strength due to a more uniform dispersion of mechanical stress. This chiral structural design strategy emphasizes the significance of structural spatial symmetry in mechanical regulation and opens up new horizons for the design of novel mechanical structures.