A simplified method of predicting stresses in surfaced steel rods

In this paper computational methodology of elasto-plastic states for rods subjected to thermal loads is presented. The dependence of stresses on strain was assumed on the basis of tension curves taking into account temperature. The computations of strains and stresses in a rod made of S235 steel, loaded by thermal fields generated by a point welding heat source of different intensities, were investigated. The analysis of development of plastic strains was carried out. Experimental tests were made for surfaced rod, with geometry and welding parameters assumed in numerical simulations, to verify the correctness of modelling. A simplified method was proposed to determine the longitudinal stresses in surfaced rods.