Selection of Parameters for I-beam Experimental Model Subjected to Bending and Torsion

AbstractThin-walled rods in steel structures can work in conditions of bending with torsion. Dealing with bending, conjugate with warping torsion can be a challenging task. To make justified choice of construction parameters, a more detailed study of its behavior and carrying capacity in this case is needed. Currently, the Russian norms have no guidance on accounting for plastic deformations when calculating beams experiencing simultaneously bending and torsion. Research of bearing capacity at such work, taking into account development of material plastic deformations, is a topical issue. To develop a methodology for the design of beams experiencing both bending and twisting a careful theoretical and numerical analysis of these structures is needed. Justification of numerical and theoretical results requires experimental evaluation. Currently in MGSU experimental studies of I-beams bearing capacity considering their warping torsion are under preparation. The article considers the numerical calculations of the experiment model of I-beam under torsion with bending. Behavior of the model was analyzed, considering mesh partitioning into finite elements, diagram of the material, support conditions. On the basis of studies, the parameters of test models, applied loads value were determined and planning of experiment was carried out