Experimental and numerical crashworthiness investigation of 3D printing carbon fiber reinforced nylon origami tubes

被引:8
|
作者
Jiang, Zhiyu [1 ]
Zhao, Jian [1 ,2 ,4 ]
Chen, Weidong [1 ]
Lv, Huanlin [3 ,5 ]
机构
[1] Dalian Polytech Univ, Sch Text & Mat Engn, Dalian, Peoples R China
[2] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian, Liaoning, Peoples R China
[3] Dalian Polytech Univ, Sch Informat Sci & Engn, Dalian, Peoples R China
[4] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Liaoning, Peoples R China
[5] Dalian Polytech Univ, Sch Informat Sci & Engn, Dalian 116034, Peoples R China
关键词
3D printing; carbon fiber reinforced nylon; crashworthiness; energy absorption; quasi-static axial compression; ENERGY-ABSORPTION CAPACITY; WALLED SQUARE TUBES; THICKNESS; PERFORMANCE; BEHAVIOR; DESIGN; PARAMETERS; IMPACT;
D O I
10.1002/pc.27991
中图分类号
TB33 [复合材料];
学科分类号
摘要
In this article, the crashworthiness performance of 3D printed origami tubes with variable thickness and different printing angles are investigated. First, experimental results showed that, compared with the traditional equal thickness origami tubes, the initial peak crushing force of variable thickness origami tubes (VTOT) was reduced by 41% and the specific energy absorption (SEA) had an improvement of 22%. Then, the energy absorption (EA) capacity of 3D printed origami tubes at different printing angles was measured and analyzed experimentally. It can be concluded that smaller print angles provide better EA, and the larger print angles result in a significant increase in layer-to-layer shear under quasi-static axial loads, which makes the component more susceptible to buckling and cracking. Finally, the finite element method was constructed through Abaqus/Explicit to study the crashworthiness of VTOT under different mean thickness and the thickness difference in detail. As the mean thickness increases, the load-carrying capacity and EA capacity increase during the crushing process, but the VTOT with a mean thickness of 1.2 mm has the highest SEA and CLE. The larger thickness differences can significantly improve the EA properties of the VTOT through the changing of the deformation mode.
引用
收藏
页码:3296 / 3314
页数:19
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