利用安装在拉伸试验机上的像框剪切装置,研究了平纹预浸碳纤维机织织物的剪切行为.研究发现,预浸碳纤维织物的剪切行为与织物的分阶段剪切行为类似.根据实验结果,分两个不同剪切阶段建立了预浸碳纤维织物的二维剪切性能模型.在剪切初始阶段,利用扭力弹簧来模拟纱线交叉点之间的剪切摩擦,通过实验确定了扭力弹簧扭转刚度系数.在剪切第二阶段,给出了载荷与剪切角之间的关系模型.试验结果表明,利用扭力弹簧可以很好地模拟剪切初始阶段的剪切摩擦.
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