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本文简略地回顾了各向同性和各向异性材料的破坏准则。在文献[1]和[2]的基础上,更完整地提出了以基体和界面破坏判定复合材料在复杂应力下破坏的准则。准则方程的形式取决于基体的破坏特征;方程的系数可由组份性能、含量和界面粘接状况所确定。这就揭示了这些参数对复合材抖强度的作用和影响,对复合材料的材料和结构设计有直接的指导意义。偏轴拉伸强度的理论计算结果与试验结果很一致。
This article briefly reviews damage rules for isotropic and anisotropic materials. Based on the literature [1] and [2], a more complete set of criteria for determining the failure of composites under complex stress with matrix and interface failure is proposed. The form of the criterion equation depends on the failure characteristics of the matrix; the coefficients of the equation can be determined by the properties of the composition, the content, and the bonding condition of the interface. This reveals the role and influence of these parameters on the seismic intensity of the composite, which has direct guiding significance for the material and structural design of the composite. The theoretical calculation results of the off-axis tensile strength are in good agreement with the experimental results.