Pressure wave propagation in a shaken granular bed.
Pressure waves in a granular material travel through particle contact points and are primarily transmitted by the "force chains" that carry most of the load in a granular medium. However, these force chains tend to be fragile and ephemeral and can be disrupted by very minor perturbations including the waves themselves. External vibration also disrupts the force chains and therefore also changes the wave propagation characteristics. In this paper we study the effects of vibration on wave propagation in a shaken granular bed.
Hostler
Stephen R
SR
California Institute of Technology, Pasadena, California 91125, USA. hostler@case.edu
Brennen
Christopher E
CE