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在预测三维机织复合材料力学性能时,将纱线特别是纬纱横截面假设成何种形状一直众说纷纭.本文中假设纬纱截面形状分别为圆形、跑道形、凸透镜形、矩形,经纱横截面形状为矩形,采用刚度平均法和等应变力学模型计算了4种角联锁结构复合材料的弹性模量,经与复合材料的数字图像对比分析和实验验证表明,圆形纬纱截面形状假设与数字图像相差较大,与其它截面形状假设的弹性模量预测结果相差也较大,跑道形、凸透镜形、矩形等纬纱截面形状假设彼此间弹性模量预测结果的差异很小,与实验数据也具有较好的一致性.

参考文献

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