INTERSECTION DIMENSIONS SELECTION OF AN I-PROFILE SHAPE IN ORDER TO SECURE A MINIMAL MASS FOR A OVERHEAD CRANE GIRDER
A quality constructive solution can be considered one that ensures the proper functioning and reliability of the product with the least possible cost. Therefore, it is the main goal of every designer to obtain the required girder capacity with minimal material expense in the cross section design of a full plate girder. This ensures an optimal material participation in the overall price of the finished structure already in the initial stage of design. This paper presents the I-profile shape cross-section optimization at the overhead crane main girder, where the metal sheets stability calculation to buckling is made according to BAS/JUS U.E7.121/1986. The mathematical model is solved using the nonlinear programming method SUMT (sequential unconstrained minimization technique) where from the goal function with constraints, with introduction of the penalty function, a new function