Effect of the Yield Criterion of Matrix on the Brittle Fracture of Fibres in Uniaxial Tension of Composites
Effect of the Yield Criterion of Matrix on the Brittle Fracture of Fibres in Uniaxial Tension of Composites
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DOI：
10.1155/2016/3746161
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发表时间：
2016-04
影响因子：
--
通讯作者：
S. Alexandrov;Y. Erisov;F. Grechnikov
中科院分区：
文献类型：
--
作者：
S. Alexandrov;Y. Erisov;F. Grechnikov
本文研究了连续纤维增强金属基复合材料在平行于纤维方向拉伸时，基体屈服准则对纤维脆性断裂的影响。假定矩阵服从相当一般的各向同性屈服准则。采用文献中先前提出的预测纤维断裂的拉伸载荷的近似方法。结果表明，这种拉伸载荷实际上与基体的屈服准则无关。这对于工程应用来说是一个很大的优势，因为在特雷斯卡屈服准则的情况下可以得到解析解。该解决方案可用于广泛的基质材料，而不会损失纤维断裂时拉伸载荷预测的准确性。
This paper examines the effect of the yield criterion of the matrix on brittle fracture of the fibre in continuous fibre reinforced metal matrix composites subjected to tension in the direction parallel to the fibres. It is assumed that the matrix obeys quite a general isotropic yield criterion. An approximate approach to predicting the tensile load at which the fibre breaks previously proposed in the literature is adopted. It is shown that this tensile load is practically independent of the yield criterion of the matrix. This is a great advantage for engineering applications since an analytic solution is available in the case of Tresca yield criterion. This solution can be used for a wide range of matrix materials with no loss of the accuracy of the prediction of the tensile load at which the fibre breaks.