[1]刘继,李珍,药天运.熔丝制造3D打印CFRP层内损伤破坏机理与模型研究[J].西安建筑科技大学学报(自然科学版),2024,56(01):74-81.[doi:10.15986/j.1006-7930.2024.01.010]
　LIU Ji,LI Zhen,YAO Tianyun.Research on damage and failure mechanism and model of 3D printed cfrp layer by fused filament fabrication[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(01):74-81.[doi:10.15986/j.1006-7930.2024.01.010]
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熔丝制造3D打印CFRP层内损伤破坏机理与模型研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年01期
页码:
74-81
栏目:
出版日期:
2024-02-28

文章信息/Info

Title:
Research on damage and failure mechanism and model of 3D printed cfrp layer by fused filament fabrication
文章编号:
1006-7930(2024)01-0074-08
作者:
刘继1; 李珍2; 药天运3
（1.陕西铁路工程职业技术学院 道桥与建筑学院，陕西 渭南 714099；2.长安大学 公路学院，陕西 西安 710061；3.长安大学 建筑工程学院，陕西 西安 710061）
Author(s):
LIU Ji1;  LI Zhen2;  YAO Tianyun3
（1.School of Bridge and Building, Shaanxi Railway Institute, Shaanxi Weinan 714099, China;2.School of Highway, Chang′an University, Xi′an 710061, China;3.College of Civil Engineering and Architecture, Chang′an University, Xi′an 710061, China）
关键词:
桥梁工程; 熔丝制造技术; 碳纤维复合材料; 损伤失效机理; 夹片式锚具
Keywords:
bridge engineering;  fused filament fabrication;  carbon fiber reinforced plastics;  damage failure mechanism;  clip anchor
分类号:
TU599；U444
DOI:
10.15986/j.1006-7930.2024.01.010
文献标志码:
A
摘要:
为将3D打印技术应用到桥梁工程中，以熔丝制造3D打印碳纤维复合材料锚环为研究对象，开展了材料层内损伤失效机理的基础性研究工作.首先，对锚环进行了张拉锚固破坏试验，明晰材料的损伤失效模式.其次，测试分析了材料的弹性参数及强度参数值，供后续仿真分析使用.最后，通过VUMAT子程序构建了材料的损伤失效本构关系，利用ABAQUS仿真分析软件模拟熔丝制造3D打印碳纤维复合材料锚环的渐进损伤失效全过程，分析其层内损伤失效机理.结果表明：熔丝制造3D打印碳纤维复合材料具有显著的层内损伤现象；选用Hashin损伤起始判据与刚度瞬间退化模型作为熔丝制造3D打印碳纤维复合材料损伤力学模型偏于安全，具有一定的可行性；锚环在高度方向产生纵向裂纹是由纤维拉伸失效导致的.
Abstract:
In order to apply 3D printing technology to bridge engineering, the basic research work on the mechanism of damage and failure within the material layer was carried out, with the manufacturing of 3D printed carbon fiber composite anchor rings using fuse as the research object. Firstly, tensile anchorage failure test was carried out to clarify the damage failure mode of the anchor ring. Secondly, the elastic parameters and strength parameters of the material are tested and used for subsequent simulation analysis. Finally, the damage failure constitutive relationship of the material was constructed by VUMAT subroutine, and the whole process of progressive damage failure of the 3D-printed carbon fiber reinforced plastic anchor ring was simulated by ABAQUS simulation analysis software, and the damage failure mechanism in the layer was analyzed. The results show that the intra damage of 3D printed carbon fiber reinforced plastic manufactured by fuse is significant. The use of Hashin damage initiation criterion and stiffness instantaneous degradation model as the damage mechanical model of 3D printing carbon fiber reinforced plastic is safe and feasible. The longitudinal cracks in the height direction of the anchor ring are caused by fiber tensile failure.

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备注/Memo

备注/Memo:
收稿日期:2022-09-16修回日期:2023-01-01
基金项目:长安大学中央高校基本科研业务费专项资金（300102282108）;陕西铁路工程职业技术学院科研基金项目（KY2019-50）
第一作者:刘继（1989—），男，硕士，讲师，主要从事大跨桥梁施工、桥梁工程智能制造研究.E-mail: lj_hpu@163.com
更新日期/Last Update: 2024-04-08