提出了一个细观力学模型,用于预测非线性黏弹聚合物基复合材料的有效性质.该方法利用广义割线模量方法对单积分型热力学本构进行线性化,并运用Laplace变换技术将黏性问题转化为弹性问题.利用热力学本构拟合高密度聚乙烯的实验数据,得到基体的材料参数.利用该模型计算了玻璃微珠填充高密度聚乙烯复合材料(GB/HDPE)在恒应变率下的应力应变关系,计算结果与文献实验结果吻合较好.数值计算结果表明GB/HDPE.复合材料表现出明显的非线性力学行为.该细观力学模型可以很好地预测复合材料非线性黏弹性性质.
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