The criteria of conflict overlap of any two ellipsoidal aggregates are proposed based on a volume-index, and a numerical method of three-dimensional random aggregate model is realized.

• 提出了针对颗粒夹杂为椭球形状并呈随机分布的多相复合材料的三维有限元网格的建立方法,为复合材料细观结构研究提供了一种全自动的建模工具。