Compressive Wave Propagation in Highly Ordered Granular Media Based on DEM

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Abstract

In this study, we investigated the propagation of the compressive waves in twp-dimensional highly ordered particle assemblies with different material properties and confining stresses. We focused on the attenuation of velocity amplitude, wave speed and energy dispersion behaviors. The mechanisms of wave propagation through specimens containing inclusions that show different horizontal angles were simulated. The peak velocities change exponentially as a function of time along the wave propagation direction. Energy dispersion exhibits an increasing trend as the angle increases. Then the effects of material parameter on wave propagation speed and the confining stress with the dispersion relations are determined. Finally, the shape of wavefront is studied to show the propagation of stress wave. It is linked to the distribution of equivalent strain. The outer contours of wavefront and strain distribution have the same shape.

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APA

Wang, J., & Chu, X. (2018). Compressive Wave Propagation in Highly Ordered Granular Media Based on DEM. International Journal of Nonlinear Sciences and Numerical Simulation, 19(5), 545–552. https://doi.org/10.1515/ijnsns-2017-0213

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