With the appearance of numerical methods, and specifically the finite element method in the 1960's, a new line of research emerged in the complex study of the behavior of the grain-silo structure. Of the numerous studies performed to date, most are directed towards obtaining a mathematical model to simulate the behavior of the stored material. However, no new model has served to satisfactorily explain the distribution and magnitude of experimentally determined pressures. The authors previously applied finite element models to calculate pressures on the silo walls in static conditions. The logical progression of these studies has been to consider the dynamic situation, since the greatest stresses produced are the overpressures exerted during discharge. Indeed, these pressures condition the design of the silo.
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