Role of particle shape and contact profile on the dynamic response of particulate materials
Date of Original Version
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.
Optics and Lasers in Engineering
Shukla, Arun, Martin H. Sadd, Raman Singh, Qiming Tai, and S. Vishwanathan. "Role of particle shape and contact profile on the dynamic response of particulate materials." Optics and Lasers in Engineering 19, 1-3 (1993): 99-119. doi:10.1016/0143-8166(93)90037-L.