Institute of Mathematics of the Czech Academy of Sciences

As a result of operational stress, metal materials degrade. At elevated and high temperatures, which are the operating conditions of a number of power plants, a

The paper is focused on the crack growth in the manganese cast steel under static and dynamic loading. Crack extension is simulated by means of element extinction algorithms. Determination of micro-mechanical parameters is based on the combination of static tests, microscopic observation and numerical calibration procedures. The attention is paid on the influence of initial value of J-integral and the slope of R curve which is modelled by 3D FEM. Standard CT and SENB bodies were used for static tests and for dynamic tests Charpy body with V-notch. The commercial Abaqus software system, its explicit and implicit variant with a programmed user procedure, was verified by the WARP3D system.