3D打印复合材料开孔板力学性能影响规律

摘要/Abstract

摘要： 为了改善3D打印技术制备的连续碳纤维增强复合材料样件的拉伸力学性能，研究了不同填充路径对复合材料开孔板拉伸性能的影响。采用主应力轨迹路径的规划方法制备了主应力轨迹路径填充开孔板测试样件，并将其与栅格路径填充开孔板和机械加工开孔板进行了拉伸性能对比。结果表明：主应力轨迹路径填充开孔板与机械加工开孔板相比，拉伸强度高9.73%，弹性模量高25.58%；主应力轨迹路径填充开孔板在断裂前圆孔周围的应变分布更均匀，应变更小。

关键词: 3D打印, 复合材料, 开孔板, 主应力轨迹, 力学性能

Abstract: In order to improve the tensile mechanics properties of 3D printing continuous carbon fiber reinforced composites, the influences of different filling paths on open-hole plates composite tensile properties were studied. The principal stress trajectory path planning method was used to print the main stress trajectory path filled open-hole plate test specimen，and the tensile properties were compared with zig-zag path filled open-hole plates and machined open-hole plates. The results show that, compared with machined open-hole plates, the tensile strength of principle stress trajectory path filled open-hole plates is 9.73% higher, and the elastic modulus is 25.58% higher. The principle stress trajectory path filled open-hole plate strain distribution before fracture is more uniform and the strain is smaller.

Key words: 3D print, composite, open-hole plate, principal stress trajectory, mechanics property

中图分类号:

V258

闫东东;单忠德;战丽;范聪泽;孙启利. 3D打印复合材料开孔板力学性能影响规律[J]. 中国机械工程.

YAN Dongdong;SHAN Zhongde;ZHAN Li;FAN Congze;SUN Qili. Influences Law of Mechanics Properties of 3D Printing Composite Open-hole Plates[J]. China Mechanical Engineering.

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