Notch fatigue assessment of four critical plane strain energy criteria based on mixed cracking mode

Four strain energy criteria based on critical plane were assessed using the notch fatigue testing results obtained from the fully reversed uniaxial and cyclic torsion fatigue experiments on the notched shaft specimens made from 16MnR, a mixed cracking material. All the fatigue analysis is based on the stress and strain results obtained by the finite element method with a robust plasticity model. The initial Ellyin criterion has been modified as a strain energy criterion based on critical plane. A material constant has been introduced to weight the different damage between tensile and torsion work in the initial Ellyin criterion and Chu criterion. A detailed comparison among the modified Ellyin criterion, the modified Chu criterion, the Jiang criterion and the Lee criterion has been made. The comparative result shows that the predicted results using the modified two fatigue criteria are generally in good agreement with the experimental data as those of other two multiaxial fatigue criteria. But for the notch components under cyclic loading, the Chu criterion has a better prediction than other three fatigue criteria.
Multiaxial notch fatigue Mixed cracking mode Fatigue criteria
Baoxiang Qiu Zengliang Gao Xiaogui Wang
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
国际会议
国际断裂力学2007年会(Fracture Mechanics and Applications 2007)
长沙
英文
107-111
2007-11-01(万方平台首次上网日期,不代表论文的发表时间)