基于FEM的编织角对碳纤维圆管拉伸性能影响研究

doi:10.19936/j.cnki.2096-8000.20220928.004

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (9): 28-34.DOI: 10.19936/j.cnki.2096-8000.20220928.004

基于FEM的编织角对碳纤维圆管拉伸性能影响研究

李德宝¹, 朱锐祥¹, 祖磊^1*, 陈世军¹, 张骞¹, 张桂明¹, 吴乔国²

1.合肥工业大学机械工程学院,合肥 230009;
2.合肥工业大学土木与水利工程学院,合肥 230009

收稿日期:2021-09-07 出版日期:2022-09-28 发布日期:2022-09-27
通讯作者: 祖磊(1983-),男,博士,教授,主要从事复合材料力学与结构设计方面的研究,zulei@hfut.edu.cn。
作者简介:李德宝(1973-),男,硕士,副教授,主要从事复合材料力学与结构设计方面的研究。
基金资助:
国家自然科学基金项目(51875159,52175311,52175133,12102115);安徽省重点研究与开发计划项目(201904d07020013);中央高校基本科研业务费专项资金资助(JZ2021HGQB0274)

Effect of braiding angle on tensile properties of carbon fiber circular tube based on FEM

LI De-bao¹, ZHU Rui-xiang¹, ZU Lei^1*, CHEN Shi-jun¹, ZHANG Qian¹, ZHANG Gui-ming¹, WU Qiao-guo²

1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;
2. College of Civil Engineering, Hefei University of Technology, Hefei 230009, China

Received:2021-09-07 Online:2022-09-28 Published:2022-09-27

摘要/Abstract

摘要： 本文在细观力学的基础上,建立有限元模型,以预测编织单胞的拉伸模量。首先,采用参数化建模建立二维三轴编织结构模型,并与实际样件比较,研究了编织角对编织圆管单层厚度和纤维含量的影响。结果表明,在同种建模方法下,随着编织角度逐渐增大,纤维体积含量呈现先增后趋于稳定的趋势,单层厚度出现变薄的现象,且纤维挤压堆积得以减轻。然后,通过有限元模拟,预测出单胞的应力应变和模量值;经对比,该预测结果与实验结果吻合。最后,采用东丽T700碳纤维和环氧树脂编织成二维三轴圆管,根据GB/5349标准进行了复合材料二维三轴编织圆管的轴向拉伸实验,研究了不同编织角度对二维三轴编织复合材料圆管轴向拉伸性能的影响,以及编织角度对模量的影响;结果表明编织角度越小,模量越高,轴向拉伸性能越好。

关键词: 编织圆管, 拉伸实验, 编织角度, 拉伸模量

Abstract: In this paper, a finite element model was established based on meso-mechanics to predict the tensile modulus of braided RVE. Firstly, a two-dimensional triaxial braided structure model was established by parametric modeling, and the effect of braided angle on the thickness and fiber content of braided circular tube was studied by comparing with the actual sample. The results show that with the same modeling method, as the braiding angle increases, the fiber volume content increases first to a certain level and then remains steady at the level. When the monolayer thickness becomes thinner, and the fiber extrusion and accumulation is reduced. Then, the stress, strain and modulus of representative volume element were predicted by finite element simulation. The predicted results are in good agreement with the experimental results. Finally, TORAY T700 carbon fiber and epoxy resin were used to braided 2D triaxial tube. According to GB/5349 standard, the axial tensile test of 2D triaxial braided tube was carried out in order to study the effects of different braided angles on the axial tensile properties of 2D triaxial braided tube and those of braided angles on the modulus. The results suggest that the smaller the braiding angle, the higher the modulus and the better the axial tensile property.

Key words: braided round tube, tensile test, braiding angle, tensile modulus

中图分类号:

TB332

李德宝, 朱锐祥, 祖磊, 陈世军, 张骞, 张桂明, 吴乔国. 基于FEM的编织角对碳纤维圆管拉伸性能影响研究[J]. 复合材料科学与工程, 2022, 0(9): 28-34.

LI De-bao, ZHU Rui-xiang, ZU Lei, CHEN Shi-jun, ZHANG Qian, ZHANG Gui-ming, WU Qiao-guo. Effect of braiding angle on tensile properties of carbon fiber circular tube based on FEM[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 28-34.

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基于FEM的编织角对碳纤维圆管拉伸性能影响研究

Effect of braiding angle on tensile properties of carbon fiber circular tube based on FEM

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