New method of inelastic buckling analysis for steel frames

Nonlinear stability analysis of the frame structures

“…Tek se s razvojem kompjuterske tehnike stvorila mogućnost za sveobuhvatno rešenje ovog problema. Treba napomenuti da su se ovim problemom u poslednje vreme bavili mnogi autori čiji su rezultati prikazani u [24], [5] i [13].…”

“…Fast development of computer technology has created the opportunity for a comprehensive solution of this problem. It should be mentioned that this problem recently was investigated by many authors whose results are presented, for example, in [24], [5] and [13]. U ovom radu je primenjena metoda konačnih elemenata kao najefikasnija numerička metoda za rešavanje stabilnosti okvirnih nosača.…”

“…Pristup koji se zasniva na primeni teorije tangentnog modula u poslednje vreme dosta je razmatran u literaturi, i pri tome može da se izdvoji rešenje koje je dato u [24]. Rezultati dobijeni u ovom radu pokazuju da se predloženom analizom stabilnosti u neelastičnoj oblasti može izračunati kritična sila čeličnih okvirnih nosača i na taj način obaviti proračun takvih nosača.…”

“…The approach that is based on the application of tangent modulus theory is also discussed in the literature, and solution given in [24] can be specified. The results obtained in this paper show that the proposed inelastic buckling analysis suitably evaluates the critical load and failure modes of steel frames, and can be a good alternative for the evaluation of critical load in the design of steel frames.…”

A numerical study on the structural integrity of self-anchored cable-stayed suspension bridges

“…As a matter of fact, several studies, based on formulations, which involve both geometric and material nonlinearities, have shown that material inelastic behavior of structural members highly affects the nonlinear static behavior of the bridge structure [8][9][10][11]. Both geometric and material nonlinearities were considered in the modified BPI approach proposed by Yoo and Choi [12,13] in which the effect of material inelasticity in the structural members was reproduced by means of classical tangent modulus theory and column-strength curves provided by current design codes. Moreover, an iterative eigenvalue analysis was adopted to calculate, at each computational step, the tangent modulus of each structural member.…”