MODEL TECHNIQUE FOR ANALYSIS OF NONLINEAR STRUCTURES

AN EXPERIMENTAL METHOD TO DETERMINE STRESS RESULTANTS AND DISPLACEMENTS, BY TAKING INTO ACCOUNT GEOMETRICAL NON-LINEARITY, IS SUGGESTED FOR EVERY PROJECT IN WHICH NONLINEAR BEHAVIOR MAY BE A SIGNIFICANT FACTOR. THE METHOD CONSISTS OF LOADING A MODEL IN TWO STAGES. FIRST, A FRACTION OF THE DEAD AND LIVE LOADS IS APPLIED SUCH THAT THE DISPLACEMENTS OF THE SYSTEM REMAIN SMALL AND ITS BEHAVIOR MAY BE CONSIDERED AS LINEAR. THEN, THE MODEL IS LOADED WITH ITS FULL DEAD AND LIVE LOADS UNDER WHICH IT DISPLAYS ITS REAL, NONLINEAR BEHAVIOR. STRAINS AND DISPLACEMENTS ARE RECORDED FOR BOTH CASES. BY COMPARING THE TWO READINGS, THAT IS, BY DIVIDING THE SECOND READING BY THE FIRST ONE, THE NONLINEARITY OF THE SYSTEM IS DETERMINED. AN INVESTIGATION WAS CARRIED OUT ON A CABLE-STAYED BRIDGE SYSTEM.

Media Info

  • Pagination: p. 243-6
  • Serial:
    • Experimental Mechanics
    • Volume: 12
    • Issue Number: 5
    • Publisher: Society for Experimental Mechanics
    • ISSN: 0014-4851

Subject/Index Terms

Filing Info

  • Accession Number: 00209680
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 28 2002 12:00AM