ANLAYSIS OF FLEXURAL STIFFENESS OF UNIVORMLY LOADED STEEL MEMBERS ON THE YIELD PLATEAU. 1: STABILITY ANALYSIS IN THE PLASTIC RANGE

This paper illustrates results of experiments based on different theories for determining the critical load of a column buckling in the plastic range: the Engesser-Kalman and Engesser-Shanley theories. Tests up to and beyond yield point were made on aluminum alloy, having no sharply-defined yield point, and structural steel which has a well-defined yield point. Continuously loaded specimens of structural steel show that for short, stocky columns the buckling strength is far above the yield strength. However, since the parameters of the tests were extremely wide, the deviations between test results and theory do not appear in practice, since, for example, columns with a slenderness ratio equal to 30 are exceptional. In the discussion of the problem of lateral torsional buckling of beams under uniform moment it is deduced that after complete yield of the compression flanges, the beam will buckle laterally, with the development of plastic moment regardless of beam length. /TRRL/

  • Corporate Authors:

    Technische Universitaet

    Braunschweig,   Germany 
  • Authors:
    • IVANYI, M
  • Publication Date: 1973

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Filing Info

  • Accession Number: 00261436
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 22 1974 12:00AM