C/C复合材料微观尺度烧蚀形貌演变研究

宋永善; 齐乐华; 张守阳; 张佳平; 李逸仙

doi:10.13433/j.cnki.1003-8728.2018.0519

C/C复合材料微观尺度烧蚀形貌演变研究

doi: 10.13433/j.cnki.1003-8728.2018.0519

1.
西北工业大学机电学院, 西安 710072;
2.
西北工业大学 C/C复合材料研究中心, 西安 710072

基金项目:

国家自然科学基金项目（51472203、51521061）与西北工业大学博士论文创新基金项目（CX201109）资助

详细信息

作者简介:
宋永善(1982-),博士研究生,研究方向为复合材料微观结构表征、力学性能研究,songyongshan@mail.nwpu.edu.cn

通讯作者:
齐乐华,教授,博士生导师,qilehua@nwpu.edu.cn

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- 文章访问数: 250
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- 被引次数: 0
出版历程
- 收稿日期: 2017-04-21
- 刊出日期: 2018-05-05

Simulation on Morphology Evolution of Micro Ablation for C/C Composites

1.
Northwestern Polytechnical University, School of Mechatronic Engineering, Xi'an 710072, China;
2.
Northwestern Polytechnical University, Carbon/Carbon Composites Research Center, Xi'an 710072, China

摘要

摘要: 为了模拟C/C复合材料高温烧蚀环境下的形貌演变规律，基于水平集算法，耦合扩散方程建立了C/C复合材料在微观尺度烧蚀模型，计算了C/C复合材料的微观形貌演变过程，并将计算过程中发现的圆柱形凸起形貌与C/C复合材料烧蚀后的微观形貌进行了对比，二者吻合较好。在此基础上，分析了气体扩散和非均匀氧化反应对纤维和基体烧蚀形貌演变的影响规律，为研究C/C复合材料微观烧蚀机理奠定基础。
- C/C复合材料 /
- 烧蚀 /
- 形貌演变 /
- 水平集算法
Abstract: An micro ablation model for C/C composites was built coupling the level set method with the diffusion equation to simulate the morphology evolution of C/C composites under high temperature condition. Surface morphology evolution during ablation was calculated. The cylindrical convex morphology resulted from calculation showed a good agreement with the surface morphologies of C/C composites after ablation experiment, indicating the reliability of the built model. On this basis, the effect of the gas diffusion and inhomogeneous oxidation reaction on the morphology evolutions of fibers and matrix were analyzed to support further studies on micro ablation mechanism of C/C composites.
- C/C composites /
- ablation /
- morphology evolution /
- level set method

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参考文献(18)

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