WET SOLIDS FLOW ENHANCEMENT

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The elastic modulus E of wet granular material was found to be of the order of 0.25 MPa, this value does not compare well with the value predicted for a cubic array of spheres under Hertzian contact were the predicted values were in the order of 250 MPa . The strain-stress behavior of a wet granular media was measured using a split Parfitt tensile tester. In all cases the stress increases linearly with distance until the maximum uniaxial tensile stress is reached. The stress then decreases exponentially with distance after this maximum is reached. The linear region indicates that wet ... continued below

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12 pages

Creation Information

Caram, Hugo S. & Foster, Natalie March 30, 1999.

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Description

The elastic modulus E of wet granular material was found to be of the order of 0.25 MPa, this value does not compare well with the value predicted for a cubic array of spheres under Hertzian contact were the predicted values were in the order of 250 MPa . The strain-stress behavior of a wet granular media was measured using a split Parfitt tensile tester. In all cases the stress increases linearly with distance until the maximum uniaxial tensile stress is reached. The stress then decreases exponentially with distance after this maximum is reached. The linear region indicates that wet solids behave elastically for stresses below the tensile stresses and can store significant elastic energy. The elastic deformation cannot be explained by analyzing the behavior of individual capillary bridges and requires accounting for the deformation of the solids particles. The elastic modulus of the wet granular material remains unexplained. New information was found to support the experimental finding and a first theory to explain the very small elastic modulus is presented. A new model based on the used of the finite element method is being developed.

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12 pages

Notes

OSTI as DE00786388; NTIS

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  • Other Information: PBD: 30 Mar 1999

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  • Report No.: FG22-95PC95219--10
  • Grant Number: FG22-95PC95219
  • DOI: 10.2172/786388 | External Link
  • Office of Scientific & Technical Information Report Number: 786388
  • Archival Resource Key: ark:/67531/metadc723159

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  • March 30, 1999

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • March 30, 2016, 6:26 p.m.

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Caram, Hugo S. & Foster, Natalie. WET SOLIDS FLOW ENHANCEMENT, report, March 30, 1999; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc723159/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.