基于DIGIMAT/FE建立含孔隙复合材料细观模型,模型涵盖纤维、树脂和孔隙三相,有效反映了复合材料真实的微结构和细观材料属性,结合通用的ABAQUS/EXPLICIT对细观模型施加超声波激励.通过提取超声波在材料内传播云图,建立了单向连续纤维增强复合材料超声衰减和孔隙率的关系.以T800/环氧树脂复合材料体系为例,研究孔隙尺寸对超声衰减系数模拟结果的影响,并将数值模拟结果与解析模型得到的经验关系进行对比,验证了模型的有效性.该方法能够有效地指导实验过程,为降低复合材料孔隙率、提高其性能提供理论依据.
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