Abstract: Preparation for DEC (design extension condition) is one of the lesson learned from Fukushima nuclear accident. From the structural point of view, it is needed to know the failure modes of the pipe structure to make adequate preparation against excessive seismic loading. But the failure modes under seismic loading are still not clear. Low cycle fatigue is one of the major failure modes observed at seismic experiments. Ratcheting is also observed at some other experiments. And collapse is assum...
英字タイトル:
Failure modes investigation of pipe structure under excessive seismic loading

Preparation for DEC (design extension condition) is one of the lessons learned from Fukushima Daiichi nuclear accident. Best estimation is required for DEC. For best estimation of structural strength against seismic load, it is needed to know the failure modes of the piping to make adequate preparation against excessive seismic loading. Ratcheting, collapse and fatigue are the probable failure modes of piping due to seismic loading. But the occurrence conditions of these failure modes under seismic loadi...
英字タイトル:
Numerical study on piping failure modes under seismic loading - ratcheting and collapse