Modelování zkoušek vrubovaných vzorků z nerezové oceli 316L vyrobených technologií SLM

Abstract

Master thesis is dealing with a modeling of tests on notched specimens made of stainless steel 316L produced by SLM technology. Initially, the description of SLM technology and theory of plasticity is given. Four variants of notched specimens are put to the monotonic tests under tension, torsion, and combination of tension and torsion utilizing Digital Image Correlation system. Further, a numerical study featuring four material models considering Chaboche and Voce hardening rules and von Mises and Hill yield condition is performed. Numerical simulations are prepared in the form of macros with parametric geometry generation. The results from experiments and numerical simulations are compared and evaluated regarding the individual material model response under multiaxial stress state. Appendix of the master thesis includes a search of heat treatment and creep model calibration as additional data for further research of stainless steel 316L produced by SLM technology.