Strain Regularity and Stiffness Tensor of Reinforcers in Dense Particle Reinforced Composites

针对高体积份数、随机分布、等轴状颗粒增强复合材料 ,研究了材料的应变分布规律 ,给出了基体和增强体应变平均值与材料微观结构参数之间的定量关系。结果表明 ,除应变平均值外 ,应变涨落是影响刚度张量的另一个重要因素 ,研究了应变涨落与材料微观结构参数之间的关系 ,并推导出了复合材料的刚度张量。与实验结果和以往的理论比较 ,预测结果与实验结果吻合良好

<div> Based on the study of strain distribution in composites reinfo rced with high-volume-fraction, randomly distributed par ticles, the quantitative relation betw een the average strains of matrix / reinforcers and micro structure parameters of the composite is investigated .I t is revealed that besides the average strains, strain fluctuation is also an impor tant factor affecting the stiffness modulus of the composites.</div> <div> The relation between the strain fluctuation and microstructure parameters of the composite is also obtained to derive the stiffness tensor .The theoretical prediction is favorably compared with experimental results.</div>