X-VCFEM单元在颗粒增强复合材料裂纹模拟中的应用研究

Study on the Application of X-VCFEM on Cracking Simulations in Particle Reinforced Composites

基于Ghost提出的Voronoi单元有限元法,构造能反映颗粒增强复合材料界面脱层和基体裂纹扩展的单元(X-VCFEM单元),采用积分区域动态划分技术,建立简单模型进行计算模拟。将计算结果与传统有限元软件进行比较,结果表明,X-VCFEM单元在研究颗粒增强复合材料界面裂纹时是有效的,同时也说明该方法具有精度高、速度快的特点。

It is introduced that an extended Voronoi cell finite element model（X-VCFEM） proposed by Ghosh for modeling the propagation of interracial debounding and matrix cracking in fiber reinforced composite materials. With a dynamic mesh strategy of integral area, comparisons of X-VEFEM simulations of one Voronoi element with reference results of traditional finite element method validate the effectiveness of X-VCFEM model. The results show that this model for modeling the initiation and propagation of interracial debonding and matrix cracking in complex particle reinforced composite materials has the advantages of fast speed and high precision.