Unified tensile model for unidirectional ceramic matrix composites with degraded fibers and interface
Unified tensile model for unidirectional ceramic matrix composites with degraded fibers and interface
复制标题
具有降解纤维和界面的单向陶瓷基复合材料的统一拉伸模型
DOI：
10.1016/j.jeurceramsoc.2018.09.006
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发表时间：
2019-02
影响因子：
5.7
通讯作者：
G.-Q. Jiao
中科院分区：
文献类型：
--
作者：
C. -P. Yang;F. Jia;B. Wang;T. Huang;G.-Q. Jiao
为了克服先前提出的微机械模型的粗糙度[Acta Mech. Sin.（2011）382]，建立了基于混合律、剪滞理论和统计方法的预应力陶瓷基复合材料（CMCs）高温氧化承载能力的多尺度分析模型。为了综合表征力学降解机制，氧化诱导的纤维颈缩（或脆化）和纤维-基体界面弱化都被考虑在内。将该模型应用于2D-C/SiC复合材料。研究了界面摩擦阻力、界面凹陷长度、纤维颈缩因子和氧化时间对复合材料剩余力学性能的影响。参数分析表明，修正后的公式比以前的模型更合理。预测的2D-C/SiC复合材料的剩余拉伸模量和强度与实验数据吻合较好，并且微观损伤机制与宏观断裂形貌之间有较好的相关性。
In order to overcome the roughness of the previously proposed micromechanical model [Acta Mech. Sin. (2011) 382], an enhanced multiscale analytical model was thus developed based on the rule of mixture, shear-lag theory and statistical approach to forecast the load carrying capacity of the prestressed ceramic matrix composites (CMCs) subjected to high-temperature oxidation. For comprehensive characterization of the mechanical degradation mechanisms, the oxidation induced fiber necking (or embrittlement) and fiber-matrix interface weakening were both taken into account. The suggested model was then applied to 2D-C/SiC composites. The influences of interface friction resistance, interface recession length, fiber necking factor and oxidation duration upon the residual mechanical property were investigated. Parametric analysis demonstrates that the modified formulations are much more reasonable than the previous model. The predicted residual tensile modulus and strength for the 2D-C/SiC composite agree well with the experimental data and furthermore the microscopic damage mechanisms were correlated properly with the macroscopic fracture morphologies.
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影响因子：
9.1
作者：
Lamouroux, F;Bertrand, S;Cataldi, M
通讯作者：
Cataldi, M
影响因子：
2.3
作者：
Zhigang Sun;H. Shao;Xihui Chen;Yingdong Song
通讯作者：
Zhigang Sun;H. Shao;Xihui Chen;Yingdong Song
影响因子：
9.1
作者：
F. Pailler;J. Lamon
通讯作者：
F. Pailler;J. Lamon
DOI：
10.1016/j.mseb.2006.03.012
发表时间：
2006-06
影响因子：
3.6
作者：
Shoujun Wu;Lai-fei Cheng;Litong Zhang;Yongdong Xu;Qing Zhang
通讯作者：
Shoujun Wu;Lai-fei Cheng;Litong Zhang;Yongdong Xu;Qing Zhang
影响因子：
3.5
作者：
Chengpeng Yang;G. Jiao;Bozhe Wang
通讯作者：
Chengpeng Yang;G. Jiao;Bozhe Wang