层间剪切强度是评价复合材料层合板层间力学性能的一项重要指标.首先,按照ASTM D 2344开展了复合材料层合板短梁剪切试验,研究了CCF300/5228复合材料层合板层间剪切性能.其次,基于数字图像相关方法得到了不同载荷作用下层间全场位移和应变分布.最后,利用ABAQUS建立了复合材料层合板有限元模型,分析了复合材料层合板层间位移及应变分布,并与数字图像相关计算结果进行了对比.研究表明,数字图像相关方法试验结果与有限元分析结果具有较好的一致性.数字图像相关方法能够实时监测层合板层间应变分布,进而预测层间剪切破坏位置,为复合材料层间剪切性能研究提供有效的全场应变监测手段.
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