A DISCRETE ELEMENT ANALYSIS FOR ANISOTROPIC SKEW PLATES AND GRIDS

THE PRINCIPAL FEATURES ARE: (1) FORMULATION OF SIX ELASTIC STIFFNESSES AND COMPLIANCES IN TERMS OF THREE MODULI OF ELASTICITY IN ANY THREE DIRECTIONS AND THREE POISSON'S RATIOS RELATED TO THESE DIRECTIONS, (2) REPRESENTATION OF AN ANISOTROPIC SKEW-PLATE-AND-GRID SYSTEM BY A DISCRETE-ELEMENT MODEL CONSISTING OF A TRIDIRECTIONAL ARRANGEMENT OF RIGID BARS AND ELASTIC JOINTS, (3) FORMULATION OF STRESS-STRAIN AND MOMENT-CURVATURE RELATIONS FOR THE DISCRETE-ELEMENT USING CONCEPTS OF A CONTINUM COMPOSED OF INTERCONNECTED FIBERS, (4) DERIVATION OF STIFFNESS MATRIX USING EQUATIONS OF STATICS, AND (5) A RECURSION-INVERSION PROCEDURE TO SOLVE THE STIFFNESS EQUATIONS. THE METHOD ALLOWS FREE VARIATION IN STIFFNESSES, LOADS, AND SUPPORTS. CONCENTRATED AND DISTRIBUTED LOADS AND SUPPORTS AND EXTERNAL COUPLES IN THREE DIRECTIONS ARE EASILY HANDLED, INCLUDING GRID-BEAMS IN THREE DIRECTIONS. A COMPUTER PROGRAM IS WRITTEN TO CHECK THE FORMULATION. THE RESULTS COMPARE WELL WITH THE RESULTS FROM OTHER APPROXIMATE METHODS AND WITH EXPERIMENTAL DATA. /AUTHOR/

  • Corporate Authors:

    University of Texas, Arlington

    Arlington, TX  USA  76010

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  USA  78701

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Vora, M R
    • Matlock, H
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00207970
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Nov 18 1970 12:00AM