Compression behavior and energy absorption of 3D printed continuous fiber reinforced composite honeycomb structures with shape memory effects

被引：145

作者：

Zeng, Chengjun ^{[1
]}

Liu, Liwu ^{[1
]}

Bian, Wenfeng ^{[2
]}

Leng, Jinsong ^{[3
]}

Liu, Yanju ^{[1
]}

机构：

[1] Harbin Inst Technol HIT, Dept Astronaut Sci & Mech, POB 301,92 West Dazhi St, Harbin 150001, Peoples R China

[2] Harbin Inst Technol HIT, Dept Civil Engn, Weihai 264209, Peoples R China

[3] Harbin Inst Technol HIT, Ctr Composite Mat & Struct, POB 3011,2 YiKuang St, Harbin 150080, Peoples R China

来源：

ADDITIVE MANUFACTURING | 2021年 / 38卷

基金：

中国国家自然科学基金;

关键词：

3D printing; Continuous fiber; Honeycomb; Energy absorption; Shape memory;

D O I：

10.1016/j.addma.2021.101842

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional (3D) printing is a potential rapid prototyping process that may replace traditional manufacturing processes to fabricate lightweight cellular structures with superior energy absorption performance. In the present work, continuous fiber reinforced composite honeycomb structures (CFRCHSs) with excellent shape memory properties were manufactured through a fused filament fabrication (FFF) technology, and their out-of-plane/in-plane compression behaviors and energy absorption characteristics were experimentally investigated. The results reveal that the failure process of the 3D printed CFRCHSs under in-plane loading is that the honeycomb cells collapse layer by layer along the loading direction , accompanied by the formation of a localized band. The crashworthiness analysis indicates that the 3D printed CFRCHSs outperform several competitive cellular topologies in the compression strength and specific energy absorption. A simplified analytical model for the in-plane compression strength of CFRCHSs was derived, and good agreement between measurements and predictions was observed. Additionally, the shape recovery tests demonstrate that the 3D printed CFRCHSs possess the potential as key elements of lightweight intelligent systems and adjustable energy absorbing devices.

引用

页数：15

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