Numerical simulation of a cylindrical fatigue specimen loaded under mixed-mode conditions

This research has been supported by the Ministry of Education, Youth and Sports of the Czech Republic under the project m-IPMinfra (CZ.02.1.01/0.0/0.0/16_013/0001823) and the equipment and the base of research infrastructure IPMinfra were used during the research activities. Also, thanks are due to the specific research project FSI-S-17-4386 of the Faculty of Mechanical Engineering, BUT. ; Although a significant number of service failures occur due to the fatigue crack propagation under mixed-mode loading conditions, this area is still relatively unexplored. That is why study of mixed mode fatigue crack propagation has become much more relevant recently. The mixed mode crack behaviour is also the subject of this paper. It is focused mainly on numerical modelling of cylindrical fatigue specimen containing small cracks, loaded under mixed mode conditions. The simulation results are needed to successfully evaluate experimental measurements of crack propagation in the cylindrical fatigue specimens made of the austenitic stainless steel 316L. Some of the experimental data are also presented in this paper. Comparison of mixed mode results and pure mode I data is also carried out. Fig. 1.