在二维条件下,对比分析了经典的确定性模型和随机孔隙模型对含孔隙复合材料的物理模拟结果.确定性模型将含孔隙复合材料看做各向同性均匀介质,将孔隙假设为大小相同、离散均匀分布的规则形状;随机孔隙模型依据随机介质理论,采取统计学原理和方法,将孔隙看做是小尺度上的随机扰动,叠加于由基体构成的大尺度背景介质平均特性之上,可以利用空间平稳随机过程加以描述.研究发现,利用随机孔隙模型不但能够得到与真实孔隙几何相似性良好的孔隙形貌,而且基于此模型的超声衰减系数理论预测结果和实验测试结果之间的符合程度大大优于传统的确定性模型.
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