LOCAL STRESSES IN WEB OF WELDED BEAM
Influence of stiffeners on local stresses in the web under locally distributed loads in the middle of I shaped beam are studied as well as the influence of loading cases are studied: the first load case is load is localized at the top flange only on part of the web; the second load case is load acted on part of the top flange at right angle to the web. Evaluation of deflected mode of beam has been carried out with the help of Finite Elements Method (FEM). With the help of solid rectangular finite elements beam model has been built. Loading is nearly up to ultimate limit state which is determined by formation of plastic hinge. Deformation of material of the beam is described by Prandtl diagram. Material yield condition is accepted by von Mises criterion. On the basis of carried out investigation it is assumed that stiffeners in the beam under locally distributed loads acted on top flange do not increase capacity of the web except the zones directly attached to them.