DISCHARGE FROM CYLINDRICAL SLENDER STEEL SILOS: FINITE ELEMENT SIMULATION AND COMPARISON WITH EUROCODE 1

摘要

This study presents a model for the analysis of silo discharge with the finite element method. The proposed model incorporates the Drucker-Prager plasticity model, a metal wall, and surface-to-surface contact using a dynamic analysis. This study reports the results obtained for discharge from a silo with a flexible wall and compares these results with the new version of Eurocode 1. The mean overpressure coefficients obtained were 1.23 on the vertical wall and 1.28 on the hopper. The analysis of different silo geometries reveals a strong dependence of the value of the overpressure coefficient on silo height. A study of the relative rigidity of the wall and the grain showed that rigidity did not affect the dynamic pressures clearly.