如何确定预制件的结构参数与复合材料厚度之间的数量关系是设计人员面临的一个难题.对三维机织复合材料横截面图像细观结构进行观察分析.结果表明,决定三维机织复合材料厚度的部位在沿纬纱的中心线横截面处;经纱的横截面呈长方形;纬纱的纵向轨迹呈直线形.基于细观结构导出了用预制件结构设计参数表示的复合材料厚度计算公式,用算例验证了公式的正确性.验证结果表明,复合材料厚度计算公式正确,具有实用性.
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