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以SiC颗粒增强6061铝基复合材料(SiCp/6061Al)的微观电镜扫描图为基础,建立了含有颗粒真实微观结构的有限元模型,并以此拓展出分别含有圆形、正四边形和正六边形颗粒形状的简化模型。通过使用Abaqus有限元软件以及子模型技术模拟研究了含有不同颗粒形状模型的拉伸性能。研究发现,形状较为圆滑的简化模型(圆形、正六边形),其模拟结果与原始模型出入较大,含有棱角的正四边形模型,其应力-应变曲线与原始模型一致,但应变分布仍有所差异。
Based on the SEM micrographs of SiC particle-reinforced 6061 aluminum matrix composites (SiCp / 6061Al), a finite element model containing the real microstructure of the particles was established, and then the finite element models including circular, regular tetragon and regular hexagon A simplified model of particle shape. The tensile properties of different particle shape models were simulated by using Abaqus finite element software and submodeling technique. The results show that the simplified shape (round and regular hexagon) shape is more smooth and the simulation result is larger than that of the original model. The regular quadrangular model with edges and corners has the same stress-strain curve as the original model, but the strain distribution still exists Differences.