FINIT ELEMENT MODELING OF THE BACK-TO-BACK CONECTED COLD FORMED STEEL PROFILES BOLTED JOINTS

Abstract

The most favourable method of determining the behaviour of the structural elements, before being used at a large scale, is numerical simulation. This paper presents finite element modelling of some types of the compound sections of back-to-back cold-formed steel profiles with bolted joints. There are presented numerical models of the joints between these steel members with the aid of welded gusset elements, which are used in making of light steel portal frames. The purpose is to identify the areas of local buckling in order to ensure their safety by adding stiffening elements to increase the bearing capacity of the structure. The results are based on the experimental studies and numerical modelling.