异形截面复合材料构件成形及力学性能预测方法研究

doi:10.3901/JME.2024.02.107

机械工程学报 ›› 2024, Vol. 60 ›› Issue (2): 107-118.doi: 10.3901/JME.2024.02.107

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异形截面复合材料构件成形及力学性能预测方法研究

黄浩¹, 单忠德², 张丽娇³, 孙正², 郭子桐⁴, 刘检华¹, 金鹏⁵

1. 北京理工大学机械与车辆学院北京 100081;
2. 南京航空航天大学南京 210016;
3. 中车工业研究院有限公司北京 100160;
4. 北京科技大学材料科学与工程学院北京 100083;
5. 深圳湾实验室生物医学工程研究所深圳 518132

收稿日期:2023-01-21 修回日期:2023-07-05 出版日期:2024-01-20 发布日期:2024-04-09
作者简介:黄浩，男，1997年出生，博士研究生。主要研究方向为三维复合材料成形与多尺度性能预测。E-mail：hao_0108@126.com
基金资助:
江苏省前沿引领技术基础研究专项(BK20212007)、北京理工大学研究生科研水平和创新能力提升专项计划(2022YCXZ019)、国家轻量化材料成形技术及装备创新中心基金(111902Q-A)和先进成形技术与装备国家重点实验室开放基金(SKL2020001)资助项目。

Research on Forming and Mechanical Properties Prediction Method of Special-section Composite Component

HUANG Hao¹, SHAN Zhongde², ZHANG Lijiao³, SUN Zheng², GUO Zitong⁴, LIU Jianhua¹, JIN Peng⁵

1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081;
2. Nanjing University of Aeronautics and Astronautics, Nanjing 210016;
3. CRRC Industrial Research Institute Co., Ltd., Beijing 100160;
4. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083;
5. Shenzhen Bay Laboratory, Institute of Biomedical Engineering, Shenzhen 518132

Received:2023-01-21 Revised:2023-07-05 Online:2024-01-20 Published:2024-04-09

摘要/Abstract

摘要： 柔性导向三维织造技术成形构件层间性能强、应用广泛，但受织造过程路径规划和成形工艺的制约，使得织造时间长、构件性能不稳定。同时异形截面构件的复杂性使得原有工艺难以准确成形，且缺少相应的力学性能预测方法，严重阻碍三维织造技术在异形截面构件上的应用。本文深入探究柔性导向三维织造技术的织造机理，提出分区域织造的工艺方案，通过分段拟合逼近截面形状，有效解决了复杂异形截面构件成形难的问题。基于此工艺方案，建立牵引拉杆的宏细观尺度有限元力学性能预测模型，并以细观尺度预测结果为材料属性，分析牵引拉杆轴向承载时的应力状态。进一步建立纤维体积分数模型，分析了XY向纤维体积分数与力学性能之间的关系，为织造过程的形性调控奠定基础。试验结果表明，有限元预测Z向弹性模量的误差在4.2%以内，为异形截面构件的早期设计和工程应用提供基础。

关键词: 异形截面, 柔性导向三维织造, 力学性能预测, 成形工艺, 纤维体积分数

Abstract: The component formed by flexible guide 3D weaving technology has excellent interlayer performance and have been widely used. But it is restricted by the path planning and forming process, resulting in long weaving time and unstable component performance. At the same time, it is formidable to accurately form special-section components using the traditional process due to the complexity, and the lack of corresponding prediction methods for mechanical properties seriously hinders the application of 3D weaving technology in special-section components. In this paper, the weaving mechanism of flexible guided three-dimensional weaving technology is deeply explored, and the process scheme of sub-regional weaving is proposed. The section shape is approximated by piecewise fitting, which effectively solves the problem of forming complex irregular section components. Based on this process scheme, the macro-and meso-scale finite element mechanical properties prediction model of traction rod is established, and the stress state of traction rod under axial load is analyzed by taking the meso-scale prediction results as material properties. The fiber volume fraction model was further established to analyze the relationship between the fiber volume fraction in XY direction and the mechanical properties, which laid the foundation for the shape control of the weaving process. The experimental results show that the error of finite element prediction of Z-direction elastic modulus is less than 4.2 %, which provides the basis for the early design and engineering application of special-shaped section members.

Key words: special section, flexible guide 3D weaving, mechanical properties prediction, forming process, fiber volume fraction

中图分类号:

TB332

黄浩, 单忠德, 张丽娇, 孙正, 郭子桐, 刘检华, 金鹏. 异形截面复合材料构件成形及力学性能预测方法研究[J]. 机械工程学报, 2024, 60(2): 107-118.

HUANG Hao, SHAN Zhongde, ZHANG Lijiao, SUN Zheng, GUO Zitong, LIU Jianhua, JIN Peng. Research on Forming and Mechanical Properties Prediction Method of Special-section Composite Component[J]. Journal of Mechanical Engineering, 2024, 60(2): 107-118.

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异形截面复合材料构件成形及力学性能预测方法研究

Research on Forming and Mechanical Properties Prediction Method of Special-section Composite Component

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