LIU Qin, CAI Lixun, CHEN Hui, YIN Tao. A STUDY OF LOW CYCLE FATIGUE PROPERTIES OF MATERIALS BASED ON THE FUNNEL-SHEET SPECIMENS1)[J]. MECHANICS IN ENGINEERING, 2019, 41(1): 14-22. DOI: 10.6052/1000-0879-18-222
Citation: LIU Qin, CAI Lixun, CHEN Hui, YIN Tao. A STUDY OF LOW CYCLE FATIGUE PROPERTIES OF MATERIALS BASED ON THE FUNNEL-SHEET SPECIMENS1)[J]. MECHANICS IN ENGINEERING, 2019, 41(1): 14-22. DOI: 10.6052/1000-0879-18-222

A STUDY OF LOW CYCLE FATIGUE PROPERTIES OF MATERIALS BASED ON THE FUNNEL-SHEET SPECIMENS1)

  • According to the energy equivalent method, a semi-analytical model of the load-displacement relation for funnel-sheet specimens is proposed to correlate the Ramberg-Osgood parameters and the geometry parameters. The model is validated with the forward-predictions and the reverse-predictions in the finite element analysis. On this basis, a new method is put forward for predicting the low cycle fatigue (LCF) properties of materials by funnel sheet specimens. The LCF properties of the SS316L funnel -sheet specimens are verificated to be agree with the round bar specimens. Therefore, the LCF properties of N18 and SAPH440 at different temperatures are predicted by the method.
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