颗粒形状对复合材料拉伸力学行为影响的有限元模拟

Finite Element Simulation on Effect of Particle Shape on Tensile Mechanical Behavior of Composite

采用有限元软件,模拟了形状不同的TiC增强颗粒对316L不锈钢复合材料拉伸力学行为的影响。结果表明,增强体颗粒的形状对该复合材料的应力应变分布有重要影响。与正方形、六边形颗粒相比,因为圆形颗粒的边界与基体可更好接触,在几何上导致更为紧密的界面结合;增强体颗粒形状采用圆形,有利于该复合材料应力应变的均匀分布,圆形颗粒表现出较好的强化效果。

The effects of reinforcing TiC particles with different shape on the tensile mechanical behavior of 316L stainless steel matrix composite were investigated by finite element analysis software. The simulation results show that the reinforced particle shape has a major impact on the stress and strain behaviors of the composite. The particles in the composite is in round shape,which can produce a better strengthening for its more uniform dispersion of stress and strain, as compared with the composite which can adopt the hexagon or square particles.