碳纤维复合电极材料细观建模与拉伸模量预报

Simulation of Tensile Performance and Microstructure Modeling of Carbon Fiber Composite Electrode

预测含复杂结构的多相复合材料等效弹性属性一直是当今复合材料领域研究的重点方向。针对微观随机分布孔隙/通道的多相复合电极材料建模困难计算精度低的问题,提出了三维随机生长算法来模拟材料基体的复杂孔洞结构,建立了含复杂微观结构的有限元模型,并对复合材料的宏观等效弹性性能进行计算,计算结果表明,基于三维随机生长方法建立的含复杂微观结构的单胞模型,计算结果与文献实验数据吻合,上述建模方法能够有效的模拟复合材料电极的复杂微观结构并预报材料的拉伸性能。

Aiming at the problem of low computational accuracy of multi-phase composite electrode materials with microscopic random distribution of pores/channels, a new microstructure modeling method based on three-dimensional random growth method is proposed and a finite element model with complex microstructure is established. The calculated results show that the RVE model with complex microstructure based on the three-dimensional random growth method is in good agreement with the experimental data. The modeling method can simulate the composite electrode complex microstructure and predict the tensile properties of the material.