POST-LIMIT STIFFINESS PREDICTION OF SEMI-RIGID JOINTS USING GENETIC ALGORITHMS

Authors

  • L. R. O. DE LIMA
  • P. C. G. DA S. VELLASCO
  • J. G. S. DA SILVA
  • L. A. C. BORGES
  • L. A. P. S. DA SILVA

Abstract

THIS PAPER PROPOSES THE USE OF GENETIC ALGORITHMS TO CALIBRATE THE POST LIMIT STIFFNESS OF THE VARIOUS JOINT COMPONENTS THAT, FOLLOWING THE EUROCODE 3 COMPONENT MODELS, ALLOW THE PREDICTION OF THE NONLINEAR BEHAVIOUR OF STEEL JOINTS. NASCON, A SPECIALIZED COMPUTER SOFTWARE PURPOSELY DEVELOPED FOR THE ANALYSIS OF STEEL JOINTS, WAS USED TO CALIBRATE THE POSTLIMIT STIFFNESS OF EACH INDIVIDUAL JOINT COMPONENT. TO ACHIEVE THIS OBJECTIVE, AN AUTOMATIC ITERATIVE PROCEDURE WAS IMPLEMENTED THAT COMBINED THE COMPONENT METHOD SOLVER (NASCON) WITH THE GENETIC ALGORITHM SOFTWARE, EVOLVER, TO YIELD RELIABLE ESTIMATES OF THE POST-LIMIT STIFFNESS OF EACH COMPONENT FROM AVAILABLE EXPERIMENTAL TEST RESULTS FOR THE GLOBAL JOINT BEHAVIOUR.

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Published

2005-12-01

Issue

Vol. 2 No. 4 (2005)

Section

Articles

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