Title

Role of particle shape and contact profile on the dynamic response of particulate materials

Document Type

Article

Date of Original Version

1-1-1993

Abstract

Experimental and numerical studies have been conducted to investigate the effect of particle shape and particle surface roughness on intergranular load transfer, velocity and wavelength of a stress wave transmitted through granular media subjected to explosive loading. Dynamic photoelasticity was used as the experimental technique to study stress-wave propagation through granular media simulated by assemblies of elliptical and circular particles with varying surface roughnesses. Numerical studies employed a computational scheme based on the distinct element method. Results indicate that the shape of the particle affects both the velocity of the transmitted stress-wave pulse and the load-transfer characteristics. The wavelength shows no appreciable dependency on the particle shape. Particle surface roughness seems to affect the load-transfer characteristics and the wave length, and to a limited extent, the wave velocity. © 1993.

Publication Title

Optics and Lasers in Engineering

Volume

19

Issue

1-3

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