利用已有的纤维增强复合材料性试验样本,运用统计分析与拟合优度检验方法证明选取二参数Weibull分布函数近似估计纤维增强复合材料拉伸强度与弹性模量分布类型的合理性.通过拉伸强度与损伤变量的关系建立纤维增强复合材料的损伤演化模型,并利用试验数据与线性拟合方法推导不同层数纤维增强复合材料的演化方程.损伤演化分析结果表明,在同等损伤情况下,单层纤维增强复合材料比二、三、四层纤维增强复合材料拉伸强度分别高出10％、20％、25％,拉伸强度随着层数的增加呈逐渐降低趋势,而层数对材料弹性模量的影响可忽略不计.在此基础上,提出考虑粘贴层数的纤维增强复合材料拉伸强度修正系数klayer,系数建议值可供加固设计参考.
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