Recently structural integrity assessment under seismic events have been increasingly important in nuclear power plants. Seismic loading condition can be characterized by dynamic and cyclic loading. Although both loading rate and cyclic loading can af...
Recently structural integrity assessment under seismic events have been increasingly important in nuclear power plants. Seismic loading condition can be characterized by dynamic and cyclic loading. Although both loading rate and cyclic loading can affect material’s tensile and “apparent” J-resistance properties, it has been shown that the cyclic loading effect is much more significant than the loading rate effect for typical nuclear piping materials. In this paper, an efficient and practical numerical method using FE damage analysis is presented to simulate ductile fracture of pipe test under monotonic and cyclic loading. The damage model is based on the multi-axial fracture strain energy concept. For validation, the proposed method is applied to Japanese pipe test data. The pipe data set is published data for STS410 carbon steel pipes, performed at Central Research Institute Electric Power Industry (CRIEPI). Data include through-wall cracked pipe test results under monotonic and systematically-varied applied cyclic loading conditions.