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

doi:https://doi.org/10.2172/6182233

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

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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:: Haff, P. K.

Publication Date:: 1989-03-01

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

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                    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.

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                    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

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                    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.

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@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}

}

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