| C/C复合材料表面烧蚀细观形貌损伤分析 |
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| 引用本文： | 王臣,梁军,杜善义.C/C复合材料表面烧蚀细观形貌损伤分析[J].固体火箭技术,2007,30(2):150-154. |
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| 作者姓名： | 王臣 梁军 杜善义 |
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| 作者单位： | 哈尔滨工业大学复合材料与结构研究所,哈尔滨,150001 |
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| 摘 要： | 基于C/C复合材料烧蚀表面细观形貌和细观结构上的流场分布规律研究,着重分析了微裂纹尺寸对C/C复合材料中Z向纤维和基体界面上因变温引起的开裂损伤的影响,给出了微裂纹随温度变化的扩展规律及微裂纹特征尺寸随温度变化的表达式;提出了在高温下因变温而造成的损伤模型,为C/C复合材料结构烧蚀计算提供了一种基础性理论。研究结果表明,高温下变温会引起C/C复合材料力学性能的劣化。
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| 关 键 词： | C/C复合材料 细观形貌 流场分布 热损伤 裂纹扩展 烧蚀 |
| 文章编号： | 1006-2793（2007）02-0150-05 |
| 收稿时间： | 2006-05-07 |
| 修稿时间： | 2006-08-17 |
Thermal damage analysis on micropattern of ablative surface of C/C composites |
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| WANG Chen,LIANG Jun,DU Shan-yi.Thermal damage analysis on micropattern of ablative surface of C/C composites[J].Journal of Solid Rocket Technology,2007,30(2):150-154. |
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| Authors: | WANG Chen LIANG Jun DU Shan-yi |
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| Institution: | Center for Composite Materials,Harbin Institute of Technology,Harbin 150001 ,China |
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| Abstract: | Based on investigation on flow field distribution law of micropattern of ablative surface for C/C composites,the effects of microcrack size on cracking damage of the interface between the fiber in Z direction and matrix of C/C composites due to temperature change were emphaticaly analyzed.The propagation law of microcrack with temperature change and the expression for characteristic size of microcrack with temperature change were given.The damage model caused by temperature change under high temperature was put forward,which can provide the basic theory for the ablation calculation of C/C composites.The results show that temperature change under high temperature can deteriorate mechanical property of C/C composites. |
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| Keywords: | C/C composite micropattern flow field distribution thermal damage crack propagation ablation |
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