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基于织物真实形态选取了整体中空夹层复合材料的最小结构单元,确定了几何参数和纤维体积含量的计算方法,建立了力学模型,并在此基础上预测了整体中空夹层复合材料的弹性常数。分析了当绒经和地经纱的织造密度保持一定的比例不变时,不同织造参数下面板弹性性能的变化。制作了侧拉、平压试件并进行了性能测试,通过实验值和理论预测值的对比,表明了力学模型的正确性。
Based on the true shape of the fabric, the minimum structural unit of the whole hollow sandwich composite was selected. The calculation method of geometrical parameters and fiber volume content was established. The mechanical model was established and the elastic constants of the whole hollow sandwich composite were predicted. The variation of the elastic properties of the panels under different weaving parameters was analyzed when the weaving density of the warp yarns and the ground warp yarns kept the same ratio. The side pull and flat pressure test pieces were made and the performance test was carried out. The correctness of the mechanical model was demonstrated through the comparison between the experimental value and the theoretical predictive value.