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论文:2020,Vol:38,Issue(4):889-896 |
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引用本文： |
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梁双强, 张成龙, 陈革, 周其洪, KO Frank. 开孔三维编织复合材料强度预测及应力分析[J]. 西北工业大学学报 |
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LIANG Shuangqiang, ZHANG Chenglong, CHEN Ge, ZHOU Qihong, KO Frank. Open-Hole 3D Braided Composites Strength Prediction and Stress Analysis[J]. Northwestern polytechnical university |
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| 开孔三维编织复合材料强度预测及应力分析 |
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| 梁双强1, 张成龙2, 陈革1,3, 周其洪1, KO Frank4 |
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1. 东华大学 机械工程学院, 上海 201620;
2. 东华大学 纺织学院, 上海 201620;
3. 新疆大学 纺织服装学院, 乌鲁木齐 830000;
4. 英属哥伦比亚大学 材料系, 温哥华 V6T1Z4 |
| 摘要: |
| 由缺陷引起的应力集中是复合材料结构件使用时需要考虑的工程问题。三维编织复合材料相对于传统复合材料具有优异的损伤容限性能。首先对含缺陷前后三维（3D）编织复合材料的拉伸性能进行试验研究，并通过FGM（fabric geometry model）对其他方向材料性能进行预测。然后基于Abaqus有限元对开孔后孔周边应力分布进行分析，并和Lekhnitskii理论进行了对比，同时对沿孔垂直于在载荷方向应力分布进行了观察。分别基于传统平均应力准则和点应力准则以及基于不同失效准则的渐进失效理论对含开孔三维编织复合材料强度进行预测，并与试验结果进行了对比。结果表明，点应力准则可以很好的预测3D编织复合材料含缺陷拉伸强度，而渐进失效分析可以模拟拉伸过程中的损伤起始，损伤扩展和最终破坏模式。 |
| 关键词:
三维编织
开孔
强度预测
渐进失效
应力
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| Open-Hole 3D Braided Composites Strength Prediction and Stress Analysis |
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| LIANG Shuangqiang1, ZHANG Chenglong2, CHEN Ge1,3, ZHOU Qihong1, KO Frank4 |
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1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China;
2. College of Textiles, Donghua University, Shanghai 201620, China;
3. College of Textile and Clothing, Xin Jiang University, Urumchi 830000, China;
4. Department of Material Engineering, University of British Columbia, Vancouver V6 T1 Z4, Canada |
| Abstract: |
| The stress concentration caused by notches is a common engineering issue for composite structure application. 3D braided composite possess excellent damage tolerance compared to common laminates. The tensile properties of 3D braided composite with open-hole and un-notched were experimentally examined. The mechanic properties of 3D braided composite in other directions are predicted using FGM (Fabric Geometry Model) and finite element analysis. The stress distributions around the hole and perpendicular to the loading direction are analyzed based on Abaqus software. The simulation results were compared with Lekhnitskii's analytical study. The open-hole strength of 3D braided composite was predicted respectively using Average stress failure criteria, Point stress failure criteria (PSC), and also the progressive failure analysis based on different failure criteria. The predicted strength results were compared to the experimental values. The results show the PSC predicted strength matched the experiment, while the progressive failure analysis can predict the failure initiation, propagation and final failure mode. |
| Key words:
3D braided composite
open-hole
strength prediction
progressive failure
stress
simulation
FGM
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| 收稿日期: 2019-10-20
修回日期:
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| DOI: 10.1051/jnwpu/20203840889 |
| 基金项目: 国家重点研发计划（2016YFB0303300）资助 |
| 通讯作者: 陈革(1967-),东华大学教授,主要从事新型纺织机械及机电一体化研究。E-mail:chenge@dhu.edu.cn
Email：chenge@dhu.edu.cn |
| 作者简介: 梁双强(1991-),东华大学博士研究生,主要从事纺织复合材料力学及疲劳性能研究。
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