eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2014-08-28 11 2 10214 article Mohsen Emdadifard 1 S. M. Mir Mohammad Hosseini 1 Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran. In the present paper, discrete element method (DEM) is used to study wave propagation phenomenon in granular soils. The effect of factors such as coefficient of friction, frequency, normal stiffness and soil gradation on the wave speed is studied. Using the wall motion based on the sinusoidal function is the method of loading used in this simulation, through which the pressure wave is transferred to particles. Simulations results are well consistent with the results of experiments conducted by other researchers. In addition, the results obtained are shown as graphs to study the effectiveness of each parameter. According to the results, the coefficient of friction and normal stiffness have a greater effect on the wave speed. https://www.biotech-asia.org/vol11no2/a-study-of-the-wave-velocity-in-granular-soils-using-discrete-element-method/ Discrete Element Method; Wave Propagation; Granular Soils