Vibration-pressing forming of castable for direct blow pipe based on DEM
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,fre-quency 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.
vibratory compactioncastablediscrete element methoddirect blow pipenumerical simulation
万方数据
维普
