在交流高电场下研究了硅橡胶的老化过程,通过显微镜观察到了硅橡胶老化后产生的具有分形特征的电树枝结构,并对不同电压下获得的电树枝进行了形态以及分形维数方面的描述.基于修正的DLA模型和球状生长模型分别构建了相应的模拟算法,并对电树枝结构的生长过程进行了数值模拟,获得了较好的电树枝模拟结果.同时,也分析了不同模型下的模拟结果与实验结果在形态以及分形维数上的差异. The aging process of silicone rubber was studied under AC high electric field. The electrical tree structure with fractal characteristics was observed by microscopy. The morphology and fractal dimension of the electrical branches obtained under different voltages were described Based on the modified DLA model and the spherical growth model, the corresponding simulation algorithms are constructed respectively, and the growth process of the electrical tree structure is numerically simulated to obtain the better electrical tree simulation results. At the same time, Differences between the simulation results and the experimental results in morphology and fractal dimension.