通过建立二维有限元模型,研究了Z-pinning增强工艺过程中Pin针的嵌入对预成型件纤维变形区域的改变,定量表征了工艺引起的基体富集区的形状和大小,以及局部纤维方向变化和纤维含量非均匀分布的特征参数,得到纤维非均匀分布的规律.在此基础上,模拟了不同直径的Pin针对层合板面内微观结构的影响规律.结果表明:Pin针直径的改变对基体富集区的影响较大;局部纤维偏转角和纤维体积含量随着Pin针直径的增大而增大,但其最大值变化不明显.
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