Continuous fiber-reinforced 2.5D hybrid lattice structures with superior compression performance via self-supporting suspension printing

Dong, Ke1,2; Hou, Tiannuo1; Zheng, Pai2; Xiong, Yi1

2024-10-20

10.1016/j.compscitech.2024.110845

COMPOSITES SCIENCE AND TECHNOLOGY   影响因子和分区

0266-3538

1879-1050

This paper proposes an innovative class of two-and-a-half dimensional (2.5D) hybrid continuous fiber reinforced lattice structures (CFRLSs) that rationally combine distinct lattice designs to leverage the tensile strength of fibers for achieving superior compression performance. These hybrid structures are fabricated through a selfsupporting suspension printing (SSSP) method, which enables the fabrication of suspension structures across substantial gaps through continuous fiber 3D printing (CF-3DP). The compression behavior of the proposed 2.5 D hybrid CFRLSs was optimized by focusing on two key variables in hybridizing the basic lattice along the build direction: composition ratio and distribution strategy. Finite element and analytical models were developed to elucidate their three failure mechanisms and related control strategies. Compared to the conventional single-type structure, i.e., honeycomb design, the proposed hybrid structures show a substantially higher compression performance, with improvements of up to 141.3 % and 330.1 % in specific strength and modulus, respectively, even at a lower density. This hybrid lattice design method based on SSSP opens up new horizons for engineering high-performance CFRLSs with superior compression performance by fully exploiting the design freedom offered by CF-3DP.

3D printing Continuous fiber reinforced composites 2.5D hybrid lattice structures Compression performance

SCI

英语

第一 ; 通讯

National Natural Science Foundation of China[52105261] ; Shenzhen Science and Technology Innovation Committee[JCYJ20210324104610028] ; COMAC International Collaborative Research Project[COMAC-SFGS-2023-3148] ; PolyU-Rhein Koster Joint Laboratory on Smart Manufacturing[H-ZG6L] ; Southern University of Science and Technology, Shenzhen, China[G03034K003]

Materials Science

Materials Science, Composites

WOS:001308757000001

ELSEVIER SCI LTD

Web of Science

1.Southern Univ Sci & Technol, Sch Syst Design & Intelligent Mfg, Shenzhen 518055, Peoples R China
2.Hong Kong Polytech Univ, Dept Ind & Syst Engn, Kowloon, Hong Kong, Peoples R China

Dong, Ke,Hou, Tiannuo,Zheng, Pai,et al. Continuous fiber-reinforced 2.5D hybrid lattice structures with superior compression performance via self-supporting suspension printing[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2024,257.

Dong, Ke,Hou, Tiannuo,Zheng, Pai,&Xiong, Yi.(2024).Continuous fiber-reinforced 2.5D hybrid lattice structures with superior compression performance via self-supporting suspension printing.COMPOSITES SCIENCE AND TECHNOLOGY,257.

Dong, Ke,et al."Continuous fiber-reinforced 2.5D hybrid lattice structures with superior compression performance via self-supporting suspension printing".COMPOSITES SCIENCE AND TECHNOLOGY 257(2024).