COUPLED LOCAL BUCKLING STRENGTH OF H-SHAPED MEMBERS UNDER COMPRESSION

The purpose of this research is to drive the evaluation formula coupled local buckling strength H-shaped members under pure compression. To clarify interaction among plate elements, multiple studies have been conducted. As a result, formulae for maximum are established and expressed by empirical equations or regression analysis . However, most were not able explain behavior because complicated. solve problem, Prof. Ikarashi proposed displacement function using Fourier series an based on energy method. By series, de?ection can be described even if combined stresses act members. In paper, method, as well did. di?erence between Ikarashi’s researches function. exponentiation trigonometric used particular Because fast-converging compared function, it possible that only three terms. Additionally, describe elastic web-?ange amongst elements comprising cross section. closed-form proposed. verify reliability e?ectiveness formula, modal ?nite element method (FEM)