Design of a continuous fiber trajectory for 4D printing of thermally stimulated composite structures

被引：17

作者：

Tian, XiaoYong ^{[1
]}

Wang, QingRui ^{[1
]}

Li, DiChen ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2020年 / 63卷 / 04期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

4D printing; continuous fibers; composite structures; fiber trajectory;

D O I：

10.1007/s11431-019-1485-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Deformation control of 4D printing has always been challenging. Herein, a design method for the fiber trajectory for 4D printing composite structures with embedded continuous fibers is reported, wherein the designed composite structures can be deformed into many types of deployable surfaces. Deformation of the bilayer composite structure was driven by differences in the coefficients of thermal expansion (CTEs) between the resin substrate and embedded fibers. The bending curvature and direction of the composite structure is controlled by adjusting fiber orientations. According to differential geometry theory, the relationship between the angle of intersecting fiber bundles and curvature of the final shape was obtained. Therefore, arbitrary deployable surfaces, including conical, cylindrical, and tangent surfaces, can be deformed. This design and additive manufacturing strategy allow precise control of the deforming process, greatly extending the potential applications of 4D printing.

引用

页码：571 / 577

页数：7

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