采用细观力学方法对单向纤维增强陶瓷基复合材料的单轴拉伸应力-应变行为进行了研究.采用Budiansky-Hutchinson-Evans(BHE)剪滞模型分析了复合材料出现损伤时的细观应力场,结合临界基体应变能准则、应变能释放率准则以及Curtin统计模型三种单一失效模型分别描述陶瓷基复合材料基体开裂、界面脱粘以及纤维失效三种损伤机制,确定了基体裂纹间隔、界面脱粘长度和纤维失效体积分数.将剪滞模型与3种单一失效模型相结合,对各个损伤阶段的应力-应变曲线进行模拟,建立了准确的复合材料强韧性预测模型,并讨论了界面参数和纤维韦布尔模量对复合材料损伤以及应力-应变曲线的影响.与室温下陶瓷基复合材料单轴拉伸试验数据进行了对比,各个损伤阶段的应力-应变、失效强度及应变与试验数据吻合较好.
参考文献
[1] | 张立同,成来飞.连续纤维增韧陶瓷基复合材料可持续发展战略探讨[J].复合材料学报,2007,24(2):1-6.Zhang Litong,Cheng Laifei.Discussion on strategies of sustainable development of continuous fiber reinforced ceramic matrix composites[J].Acta Materiae Compositae Sinica,2007,24(2):1-6. |
[2] | Aveston J,Cooper G A,Kelly A.Single and multiple fracture,the properties of fiber composites[C]//Conference Proceedings on the Properties of Fiber Composites,National Physical Laboratory.Guildford,UK:IPC Science and Technology Press Ltd,1971:15-26. |
[3] | Hsueh C H,Crack-wake interfacial debonding criteria for fiberreinforced ceramic composites[J].Acta Mater,1996,44(6):2211-2216. |
[4] | Gao Y,Mai Y,Cotterell B.Fracture of fiber-reinforced materials[J].J Applied Mathematics and Physics(ZAMP),1988,39(7):550-572. |
[5] | Solti J P,Mall S,Robertson D D.Modeling damage in unidirectional ceramic matrix composites[J].Composites Science and Technology,1995,54(1):55-66. |
[6] | Curtin W A.Theory of mechanical properties of ceramicmatrix composites[J].Journal of American Ceramic Society,1991.74(11):2837-2845. |
[7] | 张鸿.宋迎东.陶瓷基复合材料纤维拔出力学分析[J].航空动力学报,2007,22(11);1886-1892.Zhang Hong,Song Yingdong.Mechanical analysis of single fiber pull-out on ceramic matrix composites[J].Journal of Aerospace Power,2007,22(11):1886-1892. |
[8] | Budiansky B,Hutchinson J W,Evans A G.Matrix fracture in fiber-reinforced ceramics[J].Journal of Mechanics Physics and Solids,1986,34(2):167-189. |
[9] | Kuo W S.Damage of multi-directionally reinforced ceramic matrix composites[D].Newark:University of Delaware,1992. |
[10] | Pryce A W,Smith P A.Behavior of unidirectional and crossply ceramic matrix composites under quasi-static tensile loading[J].Journal of Materials Science,1992,27(10):2695-2704. |
[11] | Beycrle D S,Spearing S M,Zok F W,Evans A G.Damage and failure in unidirectional ceramic-matrix composites[J].Journal of American Ceramic Society,1992,75(10):2719-2725. |
[12] | Holmes J W,Cho C.Frictional heating in a unidirectional fiber-reinforced ceramic composite[J].Journal of Materials Science Letters,1992,11(1):41-44. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%