The Investigation of the Stress State near the Crack Tip of Central Cracks through Numerical Analysis

The paper deals with the fracture problematics which is solved by CAE systems. Main goal of the numerical simulation is to investigate the stress state near the crack tip through determination of stress intensity factors. The investigated component is thick plate with symmetric central crack. Through determination of stress intensity factor for all three fracture modes of cracks can be told whether the crack will be grown by comparison of their values with critical value of the stress intensity factor for used material called as the plane strain fracture toughnessKIC. Numerical simulations were realized by the worldwide used code ANSYS. Through numerical simulation can be solved diverse fracture problems with various shapes of cracks and subsequently we can produce safer and more reliable products.