Numerical simulation study on erosion mechanism of pre-mixed abrasive water jet:

摘要

In order to optimize the parameters of the pre-mixed abrasive water jet cutting technology and make it more efficient in the coal mine gas environment, finite element analysis software LS-DYNA is used to simulate single abrasive particle of rock erosion rule and analyze the influence of different particle size, different grinding particle impact velocity, different abrasive particle shape on rock erosion effect. The results show that under the same conditions, the greater the impact velocity, the better the erosion effect, and the erosion rate of abrasive particles is almost linear with the erosion rate of rock. With an increase in velocity of abrasive particles, the erosion rate of cube shape of abrasive particles is gradually higher than that of spherical particles of abrasive. The larger the particle size of abrasive particles, the bigger the kinetic energy of them and also the erosion depth and erosion volume on the rock and steel. But when the particle size increases, the erosion rate of abrasive par...