| 纤维泊松收缩对陶瓷基复合材料基体裂纹演化影响 |
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| 引用本文： | 李龙彪,宋迎东,孙志刚. 纤维泊松收缩对陶瓷基复合材料基体裂纹演化影响[J]. 航空动力学报, 2008, 23(12): 2196-2201 |
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| 作者姓名： | 李龙彪 宋迎东 孙志刚 |
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| 作者单位： | 南京航空航天大学 能源与动力学院, 南京 210016 |
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| 基金项目： | 南京航空航天大学博士学位论文创新与创优基金(BCXJ08-85); 江苏省普通高校研究生创新基金(CX08B-1338); 博士点基金(20070287039) |
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| 摘 要： | 采用细观力学方法分析了陶瓷基复合材料在单向拉伸载荷作用下纤维泊松收缩对基体裂纹演化的影响,将库仑摩擦法则与拉梅公式相结合分析复合材料细观应力场,结合临界基体应变能准则以及界面脱粘断裂力学方法确定基体裂纹演化,讨论了界面摩擦系数、纤维泊松比、界面脱粘韧性以及纤维体积百分比等参数对界面脱粘和基体裂纹演化产生的影响,并与常界面剪应力假设下基体裂纹演化进行了对比.
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| 关 键 词： | 陶瓷基复合材料 基体裂纹 界面脱粘 泊松收缩 库仑摩擦 |
| 收稿时间： | 2007-11-30 |
| 修稿时间： | 2008-03-10 |
Influence of fiber Poisson contraction on matrix cracking development of ceramic matrix composites |
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| LI Long-biao,SONG Ying-dong and SUN Zhi-gang. Influence of fiber Poisson contraction on matrix cracking development of ceramic matrix composites[J]. Journal of Aerospace Power, 2008, 23(12): 2196-2201 |
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| Authors: | LI Long-biao SONG Ying-dong SUN Zhi-gang |
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| Affiliation: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | The influence of fiber Poisson contraction on matrix cracking development of ceramic matrix composites under unidirectional tensile was studied in this paper.The micro stress field was analyzed by combining the Coulomb's friction law and the Lame formulation.The matrix cracking development was determined by the critical matrix strain energy criterion and the fracture mechanics interface de-bonding criterion.The influence of interface friction coefficient,fiber Poisson ration,interface de-bonding toughness a... |
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| Keywords: | matrix cracking ceramic matrix composites interface de-bonding Poisson contraction Coulomb's friction |
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