an investigation on collapse of square columns reinforced by fractal geometry method

this article is a research on the crashworthiness of steel thin-walled columns with square sections. these shells are reinforced by alumina foam which is placed on the shell based on an arrangement according to fractal geometry. fractals were thinned out in a few steps and examined. the samples are placed under axial loading and as we know, the surface below the load-displacement diagram represents the amount of absorbed energy. it should be noted that all analyzes have been performed by abaqus software. finally, it was concluded that the addition of aluminum reinforcement to adsorbent improved the energy absorption parameters. it was observed that with increasing fractal geometry stages, buckling potential increased, however energy absorption parameters are improved. finally, the specimen with fractal geometry of the third stage with alumina foam was known as the best absorber.