纬纱层向偏转角对2.5D机织复合材料经向拉伸力学行为的影响

doi:10.19936/j.cnki.2096-8000.20250928.010

复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (9): 75-83.DOI: 10.19936/j.cnki.2096-8000.20250928.010

纬纱层向偏转角对2.5D机织复合材料经向拉伸力学行为的影响

姜鹏飞^1,2, 李磊¹, 张一帆³

1.北京玻钢院复合材料有限公司,北京100192;
2.先进无机纤维与复合材料全国重点实验室,北京100192;
3.天津工业大学先进纺织复合材料教育部重点实验室,天津300387

收稿日期:2025-05-06 发布日期:2025-10-23
作者简介:姜鹏飞(1987—),男,硕士研究生,高级工程师,研究方向为高性能纤维及其复合材料研发,jiangpf2015@sina.com。

Effects of weft yarn deflection angle in the thickness direction on the warp-direction tensile mechanical behavior of 2.5D woven composites

JIANG Pengfei^1,2, LI Lei¹, ZHANG Yifan³

1. Beijing Composite Materials Co., Ltd., Beijing 100192, China;
2. State Key Laboratory of Advanced Inorganic Fibers and Composites, Beijing 100192, China
3. Key Laboratory of Advanced Textile Composite Materials, Ministry of Education, Tiangong University, Tianjin 300387, China

Received:2025-05-06 Published:2025-10-23

摘要/Abstract

摘要： 2.5D机织复合材料因其优异的整体结构特性在航空航天等领域展现出广阔的应用前景。然而,预制体中纬纱在层向的偏转特征导致材料力学性能与失效机理更为复杂,严重制约了其在工程领域的广泛应用。本文以典型2.5D机织T300/QY8911-Ⅳ复合材料为研究对象,通过建立包含0°、5°及20°纬纱偏转角的单胞模型,结合三维Hashin失效准则和Mises失效准则,构建了2.5D机织复合材料渐进损伤模型,系统研究了不同偏转角下材料经向拉伸力学行为。研究结果表明:随着纬纱偏转角增大,2.5D机织复合材料经向拉伸强度呈现先增大后减小的趋势。本研究可为2.5D机织复合材料的结构设计与工程应用提供理论依据,具有重要的工程实践意义。

关键词: 2.5D机织复合材料, 纬纱偏转角, 单胞模型, 渐进损伤

Abstract: 2.5D woven composites demonstrate promising application prospects in aerospace and other fields due to their excellent integral structural characteristics. However, the deflection characteristics of weft yarns in the thickness direction of preforms lead to more complex mechanical properties and failure mechanisms, significantly limiting their widespread application in engineering fields. This study focuses on typical 2.5D woven T300/QY8911-Ⅳ composites. By establishing unit-cell models with weft yarn deflection angles of 0°, 5° and 20°, and incorporating the 3D Hashin failure criterion and Mises failure criterion, a progressive damage model for 2.5D woven composites was developed to systematically investigate the warp-direction tensile mechanical behavior under different deflection angles. The results indicate that as the weft yarn deflection angle increases, the warp-direction tensile strength of 2.5D woven composites shows a trend of first increasing and then decreasing. This research provides theoretical foundations for the structural design and engineering applications of 2.5D woven composites, holding important practical engineering significance.

Key words: 2.5D woven composites, weft yarn deflection angle, unit-cell model, progressive damage

中图分类号:

TB332

姜鹏飞, 李磊, 张一帆. 纬纱层向偏转角对2.5D机织复合材料经向拉伸力学行为的影响[J]. 复合材料科学与工程, 2025, 0(9): 75-83.

JIANG Pengfei, LI Lei, ZHANG Yifan. Effects of weft yarn deflection angle in the thickness direction on the warp-direction tensile mechanical behavior of 2.5D woven composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(9): 75-83.

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纬纱层向偏转角对2.5D机织复合材料经向拉伸力学行为的影响

Effects of weft yarn deflection angle in the thickness direction on the warp-direction tensile mechanical behavior of 2.5D woven composites

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