The equipment,such as toiler,pressure vessel and pipeline,subjected to cyclical load suffer failure as a result of the low cycle fatigue (LCF).In this paper,based on the continuum damage mechanics(CDM)theory,the LCF d...The equipment,such as toiler,pressure vessel and pipeline,subjected to cyclical load suffer failure as a result of the low cycle fatigue (LCF).In this paper,based on the continuum damage mechanics(CDM)theory,the LCF damage variable is measured through stress amplitude method during the strain controlled tests,and a continuum damage model of isotropic LCF is derived.The material tested is a 10CrMo910 steel.The LCF damage evolution equation and life estimate have been derived by use of the effective stress concept and the hypothesis of strain equivalence.展开更多
文摘The equipment,such as toiler,pressure vessel and pipeline,subjected to cyclical load suffer failure as a result of the low cycle fatigue (LCF).In this paper,based on the continuum damage mechanics(CDM)theory,the LCF damage variable is measured through stress amplitude method during the strain controlled tests,and a continuum damage model of isotropic LCF is derived.The material tested is a 10CrMo910 steel.The LCF damage evolution equation and life estimate have been derived by use of the effective stress concept and the hypothesis of strain equivalence.
