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碳纤维增强复合材料微观烧蚀行为数值模拟

李伟 方国东 李玮洁 王兵 梁军

李伟, 方国东, 李玮洁, 王兵, 梁军. 碳纤维增强复合材料微观烧蚀行为数值模拟[J]. 力学学报, 2019, 51(3): 835-844. doi: 10.6052/0459-1879-18-351
引用本文: 李伟, 方国东, 李玮洁, 王兵, 梁军. 碳纤维增强复合材料微观烧蚀行为数值模拟[J]. 力学学报, 2019, 51(3): 835-844. doi: 10.6052/0459-1879-18-351
Wei Li, Guodong Fang, Weijie Li, Bing Wang, Jun Liang. NUMERICAL SIMULATION OF MICRO-ABLATION BEHAVIOR FOR CARBON FIBER REINFORCED COMPOSITES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 835-844. doi: 10.6052/0459-1879-18-351
Citation: Wei Li, Guodong Fang, Weijie Li, Bing Wang, Jun Liang. NUMERICAL SIMULATION OF MICRO-ABLATION BEHAVIOR FOR CARBON FIBER REINFORCED COMPOSITES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 835-844. doi: 10.6052/0459-1879-18-351

碳纤维增强复合材料微观烧蚀行为数值模拟

doi: 10.6052/0459-1879-18-351
基金项目: 1) 国家自然科学基金资助项目(11732002,11672089).
详细信息
    通讯作者:

    方国东

    方国东,梁军

  • 中图分类号: O346.1;

NUMERICAL SIMULATION OF MICRO-ABLATION BEHAVIOR FOR CARBON FIBER REINFORCED COMPOSITES

  • 摘要: 碳纤维增强复合材料已广泛应用于烧蚀热防护系统中,其微观结构直接影响材料的烧蚀行为,因此材料微观烧蚀机制分析对材料设计和制备具有重要意义.本文采用有限体积法并引入固体相体积分数与界面重构技术,建立了碳纤维增强复合材料微观烧蚀数值模型.利用该微观烧蚀数值模型对碳基体包裹单根碳纤维进行烧蚀模拟,将数值模拟的烧蚀形貌与解析解结果进行对比,验证了数值求解方法的正确性.对单向碳纤维增强复合材料在不同碳纤维倾斜角下的微观烧蚀行为进行了模拟分析,得到了碳纤维倾斜角对微观烧蚀行为的影响规律.研究发现:对于碳纤维的抗氧化性能比基体强的情况,当氧扩散速率远远大于碳氧反应速率时,碳纤维将出现"笋尖"状的烧蚀形貌;当碳氧反应速率远远大于氧扩散速率时,纤维和基体将以相同速率烧蚀.当碳纤维的抗氧化性能比基体强时,纤维倾斜角会对材料微观烧蚀行为产生较大影响;相反,则影响不显著.

     

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出版历程
  • 收稿日期:  2018-10-24
  • 刊出日期:  2019-05-18

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