Abstract
In this study, the shear-lag model considering the micro-structure “interphase” and the two separate micro-damages, “interphase” debonding and matrix damage, in single fiber composite is developed firstly. So the more actual stress distribution on the fiber fragmentations during the process of stress transferring in single fiber composite is obtained. Then based on the present shear-lag model, the Monte-Carlo simulation for the process of the single-fiber fragmentation is established to predict the number of fiber fragmentation during the process of the test. The predicted result of the simulation is in accordance with the result of the single-fiber fragmentation test. At last, the factors including the statistical parameter of fiber strength distribution, the properties of the matrix and the state of the “interphase” in the single fiber composite, which affect the process of single-fiber fragmentation are analyzed.
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