The fatigue of material under multiaxial specimen loading

Abstract

This contribution describes experimental results under combined loading of specimens manufactured from common construction steel 11523 melting T31052. Specimens were loaded by amplitude of the torque, then by combination of torque and tension prestress. The last set of specimens was loaded in combination of torque and inner overpressure in the conditions of closed vessel. To obtain the required input values the stress-strain analysis of specimens was performed by finite element method in software Ansys. For evaluation of the results the Fuxa’s criterion [3] was applied. The performed experiments and their results embody a good agreement with bellow mentioned conjugated strength criterion. The experiments were performed on modified testing machine equipped by overpressure chamber.