| Dynamic Wave Propagation in Particulate Materials with Different Particle Shapes Using a Discrete Element Method (2007) | |||||||||||||
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| In this paper we use a discrete element method to explore the propagation of waves through granular materials consisting of particles with different geometric shapes. We present results for a variety of granular assemblages and shapes. To simulate these tests numerically we use a DEM system that is capable of 1) resolving the details of contact, 2) calculating the contact forces and 3) computing the stress within a particle. We corroborate our results with Shukla's experiments of waves propagating through photoelastic discs [Shukla93]. Introduction The study of wave propagation through granular material has many important applications. Granular material is used to absorb shock waves during transportation of heavy equipment and to isolate sensitive equipment from ground vibrations. It also has applications in manufacturing ceramic components which require dynamic compaction of ceramic powders. In all of these applications, we need to study the wave velocity and the peak value of the wa... | |||||||||||||
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