Performance evaluation and analysis method of vertical silo based on DEM-FEM coupling

Abstract

The present invention discloses a vertical container silo performance evaluation and analysis method based on DEM-FEM coupling. The method is carried out in two steps: the generation of material particles is realized through unit conversion of solid units, the contact between material particles and material particles and between material particles and the inner wall of the equipment is considered, and the stress distribution and particle distribution of the inner wall of the container during the loading process are obtained. The first step is the particle generation and natural falling loading process, and the second step is to open the discharge port below the silo, monitor the discharge of material particles, and obtain the silo weight loss curve through the change of the silo support reaction force. Compared with the existing silo design, it can more conveniently simulate the silo in the loading and discharging process, and reduce the amount of calculation through the coupling analysis of FEM and DEM, which is conducive to the rapid evaluation of the performance of the silo.

Images