分析了TiC颗粒增强钛基复合材料的微损伤演化规律,建立了含损伤演化的动态本构模型.TiC 颗粒增强钛基复合材料在拉伸载荷作用下,微裂纹以翼型裂纹形式扩展,基于平面翼型裂纹扩展模型,建立了二维动态损伤本构关系,并退化到一维拉伸状态,假设微裂纹成核规律满足Weibull分布,得到了一维拉伸应力状态下能够反映TiC颗粒增强钛基复合材料的损伤演化规律的宏细观相结合的动态本构关系.模型计算结果与试验结果吻合较好.
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