Study of the Effects of Various Geometrical and Loading Parameters on the Fracture Resistance Behaviour of a Reactor-Grade Pressure Vessel Steel in the Upper Shelf as Well as DBTT Regime

摘要: Unlike mechanical properties, the fracture resistance behaviour of ductile materials depends upon state stress existing ahead growing crack-tip. For materials, resistance, expressed in terms J–R curve, goes on changing with crack growth. The curves are influenced by specimen geometry, size, crack-depth, and loading boundary conditions, etc. Another complicacy arises ductile-to-brittle transition temperature regime, where toughness exhibits considerable scatter dependency temperature. structural integrity analysis safety-critical components, data required upper-shelf as well regime order to account for design-basis postulated accidental conditions. It may not always be possible carry out tests real-life components due several limitations, including those irradiation environment apart from prohibitive cost time tests. Finite element (FE) cracks conditions offer an impressive alternative safety-analysts. In this work, experiments were conducted two different types mechanics specimens only but also regime. effect crack-depth was studied using shallow-cracked deep-cracked specimens. size thickness values. geometry condition a compact-tension single-edged-notched-bend specimen. FE analysis, nonlocal Rousselier’s damage model used. We extensively effects variables ferritic pressure vessel steel, which have received much attention literature. Extensive verify numerical simulation results models.