Numerical simulation of collapse of a granular material column using material point method
In order to study the movement and accumulation characteristics of granular material collapses,the material point method was used to simulate a granular material column collapse experiment.The simulation results were compared with the experimental results.Investigations were made on the flow properties of the particles(evolution of sliding distance,accumulation height,velocity,energy,and kinetic energy flux).In order to reflect the granular flow's destructive potential during the collapse of the granular material column,the impact of the aspect ratio of the granular material column on the kinetic energy flux of the granular flow was further examined.The larger the aspect ratio of the granular material column,the larger the particle velocity at the outer edge of the granular material column and the stronger the degree of collapse.At the same time,the sliding distance and kinetic energy are increasing.For the distribution of kinetic energy flux,the closer the horizontal direction is to the initial granular material column,the greater the kinetic energy flux.
granular columncollapse processmaterial point methodnumerical simulation
万方数据
维普
