A DISCRETE-ELEMENT METHOD FOR TRANSVERSE VIBRATIONS OF BEAM- COLUMNS RESTING ON LINEARLY ELASTIC OR INELASTIC SUPPORTS

TWO MULTI-ELEMENT MODELS ARE USED TO SIMULATE THE INELASTIC CHARACTERISTICS OF SUPPORTS, ONE WHICH ALLOWS THE BEAM TO LIFT OFF THE SUPPORT WHEN IT DEFLECTS, UPWARD OR DOWNWARD, AND THE OTHER WHICH CONSIDERS THE RESISTANCE TO EITHER UPWARD OR DOWNWARD DEFLECTION. AN INTERNAL DAMPING FACTOR, WHICH IS RELATED TO THE FIRST DERIVATIVE WITH RESPECT TO TIME OF THE CURVATURE OF THE BEAM, HAS BEEN INCLUDED, IN ADDITION TO THE CONVENTIONAL EXTERNAL VISCOUS DAMPING FACTOR. THE METHOD IS BASED ON AN IMPLICIT DIFFERENCE FORMULATION OF THE CRANK-NICOLSON TYPE. A COMPUTER PROGRAM HAS BEEN WRITTEN TO CHECK THE VALIDITIES OF THE PROPOSED MULTI-ELEMENT MODELS OF TRACING THE LOADING PATHS OF THE NONLINEARLY-INELASTIC SUPPORTS AND OF THE IMPLICIT FORMULATION OF THE CRANK-NICOLSON TYPE. THE RESULTS COMPARE WELL WITH THE THEORETICAL RESULTS AND WITH EXPERIMENTAL DATA. /AUTHOR/

  • Supplemental Notes:
    • RES REP 56-24
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712
  • Authors:
    • Hsaio-chieh, CHAN J
    • Matlock, H
  • Publication Date: 1972-6

Media Info

  • Features: Figures; References;
  • Pagination: 229 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00209842
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 1973 12:00AM