Jiang Wu-Gui, Zhong Ren-Zhi, Qin Qing H, Tong Yong-Gang
School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China.
Research School of Engineering, the Australian National University, Acton, ACT 2601, Australia.
Int J Mol Sci. 2014 Dec 16;15(12):23389-407. doi: 10.3390/ijms151223389.
A three-dimensional (3D) representative volume element (RVE) model was developed for analyzing effective mechanical behavior of fiber-reinforced ceramic matrix composites with imperfect interfaces. In the model, the fiber is assumed to be perfectly elastic until its tensile strength, and the ceramic material is modeled by an elasto-plastic Drucker-Prager constitutive law. The RVE model is then used to study the elastic properties and the tensile strength of composites with imperfect interfaces and validated through experiments. The imperfect interfaces between the fiber and the matrix are taken into account by introducing some cohesive contact surfaces. The influences of the interface on the elastic constants and the tensile strengths are examined through these interface models.
建立了一个三维（3D）代表性体积单元（RVE）模型，用于分析界面不完善的纤维增强陶瓷基复合材料的有效力学行为。在该模型中，假设纤维在达到其拉伸强度之前是完全弹性的，而陶瓷材料则采用弹塑性Drucker-Prager本构定律进行建模。然后使用该RVE模型研究界面不完善的复合材料的弹性性能和拉伸强度，并通过实验进行验证。通过引入一些粘结接触面来考虑纤维与基体之间的不完善界面。通过这些界面模型研究了界面对弹性常数和拉伸强度的影响。
