タイプIII複合容器蓄圧器の疲労き裂解析

抄録

For upcoming hydrogen society, cost reduction of Type III composite accumulators in hydrogen refueling stations is indispensable. Authors have investigated the high cost reduction by replacing pressure cycle tests of actual accumulators with finite element fatigue analysis of them. In this research, fatigue crack analysis for a 111 L Type III composite accumulators for pressure cycle tests are performed. Stress intensity factor ranges are calculated from both experimental results using fatigue crack’s striation spacing and simulation results using far field hoop stress and crack tip hoop stress. Proposed effective stress intensity factor ranges found to be better agreement with the experimental result than stress intensity factor for whole pressure range.