3D打印碳纤维复合材料力学性能计算与实验  

Calculation and Experiment of Mechanical Properties of 3D Printed Carbon Fiber Reinforced Composite

作　　者：栾丛丛 林志伟[2,3] 姚鑫骅[2,4] 傅建中[1,2,4] LUAN Congcong;LIN Zhiwei;YAOXinhua;FU Jianzhong(Zhejiang University Engineering Training Center,Hangzhou 310058,China;School of Mechanical Engineering,Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province,Hangzhou 310027,China;Experimental Teaching Center,Hangzhou 310027,China;State Key Laboratory of Fluid Power&Mechatronic Systems,Hangzhou 310027,China)

机构地区：[1]浙江大学工程训练(金工)中心,浙江杭州310058 [2]浙江大学机械工程学院,浙江省三维打印工艺与装备重点实验室,浙江杭州310027 [3]浙江大学机械工程学院,实验教学中心,浙江杭州310027 [4]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310027

出　　处：《材料科学与工程学报》2023年第4期540-544,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51905478);浙江省高等教育学会高等教育研究课题资助项目(KT2021376)。

摘　　要：针对三维打印(3D打印)连续碳纤维热塑性复合材料力学性能计算需求,结合3D打印熔融沉积成型工艺特点,考虑填充率和沉积线角度等工艺参数影响,对传统复合材料混合定律进行改进,提出一种基于改进混合定律计算预测3D打印连续碳纤维增强热塑性复合材料结构件拉伸强度和模量的新方法。研究表明,在不同填充率下,所提出的基于改进混合定律计算得到的拉伸强度与实验结果更加接近,平均预测误差为1.8%;而根据传统复合材料混合定律计算拉伸强度与实际测试结果相比,平均预测误差为11.6%;相较传统复合材料混合定律,所提改进混合定律计算方法平均预测误差减小9.8%。研究结果为3D打印连续碳纤维增强热塑性复合材料结构件力学性能的可调可控打印提供了一种可行的理论计算方法。In order to meet the demand of mechanical properties calculation of 3D printed continuous carbon fiber reinforced thermoplastic composite,a new method based on improved mixture rule is proposed,considering the influence of fill density and deposition line angle.The results showed that the tensile strength calculated by the proposed method was closer to the experimental results,and the average prediction error was 1.8%.While the average prediction error that calculated by the traditional mixture rule was 11.6%,which indicated that there was a 9.8%reduction in the average error of the tensile strength calculated by the proposed method.The research provides a feasible theoretical calculation method for the mechanical properties of 3D printing continuous carbon fiber reinforced thermoplastic composite.

关 键 词：三维打印 碳纤维 复合材料 力学性能 混合定律 

分 类 号：TH16[机械工程—机械制造及自动化]