A DISCRETE-ELEMENT ANALYSIS FOR ANISOTROPIC SKEW PLATES AND GRIDS

A DISCRETE-ELEMENT METHOD OF ANALYSIS FOR ANISOTROPIC SKEW-PLATE AND GRID-BEAM SYSTEMS IS PRESENTED. THE METHOD CAN BE USED TO SOLVE A WIDE VARIETY OF PROBLEMS. THE PRINCIPAL FEATURES ARE: (1) FORMULATION OF SIX ELASTIC STIFFNESSES AND COMPLIANCES IN TERMS OF THREE MODULII OF ELASTICITY IN ANY THREE DIRECTIONS AND THREE POISSON'S RATIOS RELATED TO THESE DIRECTIONS, (2) REPRESENTATION OF AN ANISOTROPIC SKEW-PATE 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 MODEL USING CONCEPTS OF A CONTINUUM COMPOSED OF INTERCONNECTED FIBERS, (4) DERIVATION OF A 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, INCLUDING GRID-BEAMS IN THREE DIRECTIONS, ARE EASILY HANDLED. A COMPUTER PROGRAM HAS BEEN WRITTEN TO CHECK THE FORMULATION. THE RESULTS COMPARE WELL WITH THE RESULTS FROM OTHER APPROXIMATE METHODS AND WITH EXPERIMENTAL DATA. /AUTHOR/

  • Supplemental Notes:
    • Rr No 56-18, 203 PP, 26 FIG, 4 TAB, 42 REF, 6 APP
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  United States  78712
  • Authors:
    • Vora, M R
    • Matlock, H
  • Publication Date: 1970-8

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Filing Info

  • Accession Number: 00209425
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 22 2002 12:00AM