Abstract

A prediction model of matrix crack density in ceramic matrix composites under arbitrary matrix stress distribution was proposed. The matrix was separated into many small segments whose strength was determined by stochastic defect theory. By comparing the matrix strength and stress distribution, the matrix cracking process was simulated. The model proposed in this paper can theoretically simulate the matrix crack density of any matrix stress distribution, especially when the interface shear stress increases under cyclic loading, which can contribute to the prediction of fatigue life.

中文翻译：

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任意基体应力分布下陶瓷基复合材料基体裂纹密度预测模型

摘要

提出了任意基体应力分布下陶瓷基复合材料基体裂纹密度的预测模型。矩阵被分成许多小段，其强度由随机缺陷理论确定。通过比较基体强度和应力分布，模拟了基体开裂过程。本文提出的模型在理论上可以模拟任意基体应力分布的基体裂纹密度，尤其是在循环载荷作用下界面剪应力增大时，有助于疲劳寿命的预测。