Estimates of elastic moduli for granular material with anisotropic random packing structure

1995 ◽  
Vol 32 (14) ◽  
pp. 1989-2008 ◽  
Author(s):  
Ching S. Chang ◽  
Sao J. Chao ◽  
Y. Chang
Keyword(s):  
Granular Material ◽  
Elastic Moduli ◽  
Random Packing ◽  
Packing Structure

Estimates of Elastic Modulus for Media of Randomly Packed Granules

1994 ◽  
Vol 47 (1S) ◽  
pp. S197-S206 ◽  
Author(s):  
Ching S. Chang ◽  
Ching L. Liao
Keyword(s):  
Elastic Modulus ◽  
Granular Material ◽  
Granular Materials ◽  
Elastic Moduli ◽  
Internal Stresses ◽  
Granular System ◽  
Particle Properties ◽  
Packing Structure

The model of static hypothesis is not readily available for granular material treated as a collection of particles. Unlike other types of material, the internal stresses in a granular system are concentrated at discrete inter-particle contacts. In this paper, we propose a static hypothesis and a micromechanical description of strain considering the packing structure. The upper and lower estimates of the elastic moduli for granular materials are derived in explicit terms of the inter-particle properties.

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