ON THE THEORY OF ARCHING IN MASS FLOW HOPPERS

Experimental evidence reveals an overdesign of the critical outlet widths in mass flow hoppers, when following the standard Jenike method for the estimation because A.W. Jenike did not account for the possibility that an arch across the outlet may slide along the wall, nor for the fact that the arch, in addition to its own weight, will have to sustain the weight of the powder above. A modified theory is presented, where these two factors are included. Furthermore, this theory includes simplified, purely analytical expressions for the distribution of active and passive stresses in the powder in the converging hopper section of a silo. The theory yields considerably less overdesign of the critical arching width of the hopper outlet than does the original A.W. Jenike theory. The remaining overdesign may be compensated for by the alternative principle of measurement which is given.

  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Enstad, G
  • Publication Date: 1975-10

Media Info

  • Features: References;
  • Pagination: p. 1273-83
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00130898
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Apr 7 1976 12:00AM