THE KINETICS OF POWDER SETTLEMENT CAUSED BY LOW-LEVEL VIBRATION AND ELASTIC STRESSES

Citation
Y. Boguslavskii et S. Drabkin, THE KINETICS OF POWDER SETTLEMENT CAUSED BY LOW-LEVEL VIBRATION AND ELASTIC STRESSES, Physica. A, 222(1-4), 1995, pp. 75-86
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ISSN journal
0378-4371
Volume
222
Issue
1-4
Year of publication
1995
Pages
75 - 86
Database
ISI
SICI code
0378-4371(1995)222:1-4<75:TKOPSC>2.0.ZU;2-X
Abstract
Based on general principles of metastable states and the mechanics of continuous media, the kinetic equation of settlement of granular mater ial subjected to low level vibration and elastic stresses is developed . Because of confining pressure, the material remained nearly as a sol id block and never assumed loose free moving behavior. In such conditi ons, a rather classical approach using classical elasticity with refer ence to the microstructural nature of granular media was sufficient to capture some of its properties. The proposed model used the energy ba rrier criteria for evaluation of densification of granular materials i n isotropic and anisotropic loading conditions. The model predicts set tlement dependance on vibration amplitude and number of cycles for giv en range of confining pressure and deviatoric stresses. The prediction matches well with the experimental data.