基于细观结构分析理论,研究界面对韧性复合材料宏观强度的影响.提出一种基于细观摄动位移(Microscopic fluctuation displacement, MFD)的界面模型,以断裂韧性表征界面抵抗脱粘失效的能力.数值算例显示界面对复合材料离轴强度影响较大,界面的破坏改变了基体塑性区的分布规律.
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