基于DEM的直吹管浇注料振压成型研究  

Vibration-pressing forming of castable for direct blow pipe based on DEM

作　　者：冯霏[1] 丁群龙 FENG Fei;DING Qunlong

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《现代机械》2024年第4期47-51,共5页Modern Machinery

摘　　要：为进一步提高直吹管浇注料填充质量,通过离散元方法研究了直吹管浇注料在1D竖直振动条件下的密实过程。采用整体加料、连续振动的实验方式系统地研究了振动时间t、振幅A、频率f和压制压力等因素对浇注料堆积致密化的影响规律,并确定获得最密堆积所对应的最佳工艺参数,结果表明:离散单元法能有效地模拟浇注料在直吹管内振动密实过程,合理的振动参数和压制压力能大幅度提高浇注料的堆积密度,相同的振动强度下,高频率低振幅的振动更有效,振幅为0.4 mm,频率为55 Hz,压制压力为1400 N时密实效果最佳。In order to further improve the filling quality of direct blow pipe castable,the compaction process of the castable under 1D vertical vibration was studied by using discrete element method.The effect of vibration time t,amplitude A,frequency f and compaction pressure on the densification of the castable were systematically studied by using the experimental method of integral feeding and continuous vibration.The optimum process parameters corresponding to the densest packing were determined.The results showed that the discrete element method could effectively simulate the vibration compaction process of the castable in a direct blow pipe,and reasonable vibration parameters and compaction pressure could significantly improve the stacking density of the castable.Under the same vibration intensity,high-frequency and low-amplitude vibration was more effective.When the amplitude was 0.4 mm,the frequency was 55 Hz,and the compaction pressure was 1400 N,the compaction effect was the best.

关 键 词：振动密实 浇注料 离散元法 直吹管 数值模拟 

分 类 号：TH113.1[机械工程—机械设计及理论]