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Title: Microscopic modelling of sound waves in granular material: Quarterly progress report, January 1, 1989--March 31, 1989

Abstract

Our work over the past several years has been directed toward a detailed examination of the transmission of sound through dry granular materials at the microscopic level. Such a granular system consists of a contact network along which, and only along which, the momentum impulses which comprise the sound wave may travel. In the past several years we have studied two such systems. In one of these grains cascaded down an incline, and the pressure impulses recorded on the bed were studied using computer simulation. We looked at both thin and thick flows. The second type of system studied was a collection of quasi-static grains subjected to compressive loading. 8 refs., 5 figs.

Authors:
Publication Date:
Research Org.:
Duke Univ., Durham, NC (USA). Dept. of Civil and Environmental Engineering
Sponsoring Org.:
USDOE
OSTI Identifier:
6182233
Report Number(s):
DOE/PC/90959-T9
ON: DE89012399
DOE Contract Number:  
FG22-86PC90959
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; GRANULAR MATERIALS; WAVE PROPAGATION; COMPUTERIZED SIMULATION; FLOW RATE; MEASURING METHODS; PROGRESS REPORT; SOUND WAVES; DOCUMENT TYPES; MATERIALS; SIMULATION; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage; 010600 - Coal, Lignite, & Peat- Properties & Composition

Citation Formats

Haff, P. K. Microscopic modelling of sound waves in granular material: Quarterly progress report, January 1, 1989--March 31, 1989. United States: N. p., 1989. Web. doi:10.2172/6182233.
Haff, P. K. Microscopic modelling of sound waves in granular material: Quarterly progress report, January 1, 1989--March 31, 1989. United States. https://doi.org/10.2172/6182233
Haff, P. K. Wed . "Microscopic modelling of sound waves in granular material: Quarterly progress report, January 1, 1989--March 31, 1989". United States. https://doi.org/10.2172/6182233. https://www.osti.gov/servlets/purl/6182233.
@article{osti_6182233,
title = {Microscopic modelling of sound waves in granular material: Quarterly progress report, January 1, 1989--March 31, 1989},
author = {Haff, P. K.},
abstractNote = {Our work over the past several years has been directed toward a detailed examination of the transmission of sound through dry granular materials at the microscopic level. Such a granular system consists of a contact network along which, and only along which, the momentum impulses which comprise the sound wave may travel. In the past several years we have studied two such systems. In one of these grains cascaded down an incline, and the pressure impulses recorded on the bed were studied using computer simulation. We looked at both thin and thick flows. The second type of system studied was a collection of quasi-static grains subjected to compressive loading. 8 refs., 5 figs.},
doi = {10.2172/6182233},
url = {https://www.osti.gov/biblio/6182233}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {3}
}