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利用ANSYS软件模拟原位Mg2Si增强颗粒在均匀分布和随机分布条件下对镁基体应力场的影响。结果表明,当颗粒间距较小,且小于有效干涉距离时,颗粒间干涉作用会导致相近颗粒间产生应力集中。颗粒间的角度也能直接影响颗粒间相互作用。当颗粒间距小于有效干涉距离,且颗粒间的中心连线与载荷方向平行时,会产生最大应力集中值。相同条件下,原位Mg2Si颗粒均匀分布时的力学性能优于随机分布方式。
The effect of in-situ Mg2Si reinforced particles on the stress field of magnesium matrix was simulated with ANSYS software under uniform and random distribution. The results show that when the distance between the particles is small and less than the effective interference distance, the interparticle interference can cause the concentration of stress between adjacent particles. The angle between the particles can also directly affect the interaction between the particles. When the distance between the particles is less than the effective interference distance and the center line of the particles is parallel to the direction of the load, the maximum stress concentration will occur. Under the same conditions, the mechanical properties of in-situ Mg2Si particles are better than the random distribution.