RA-based fretting fatigue life prediction method of Ni-based single crystal superalloys

被引:12
作者
Sun, Shouyi [1 ]
Li, Lei [1 ]
Yang, Weizhu [1 ]
Yue, Zhufeng [1 ]
Wan, Huan [1 ]
机构
[1] Northwestern Polytech Univ, Dept Engn Mech, POB 883m,Changan Campus, Xian 710129, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Ni-based single crystal (NBSX); Fretting fatigue; Resolved shear stress; Accumulated dissipated energy; Finite element analysis; CRACK INITIATION; PARTIAL SLIP; BEHAVIOR; CONTACT; DAMAGE; WEAR; ORIENTATION; SIMULATION; PLASTICITY; MECHANISM;
D O I
10.1016/j.triboint.2019.01.036
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Fretting fatigue damage can significantly reduce the service life of Ni-based single crystal (NBSX) superalloys turbine blades. In this work, we proposed a fretting fatigue life prediction method by considering cracking, wear and their mutual interaction. Specifically, a parameter, denoted as RA, is developed with combination of Resolved shear stress based damage factor and Accumulated dissipated energy based damage factor, by which the contribution from cracking and wear are described respectively. The proposed method is validated with experimental data in the literature. Finite element analyses are performed to study the distribution of stresses and strains. Results show that the predicted crack initiation site, failure plane and life cycles are consistent with the experimental results.
引用
收藏
页码:109 / 117
页数:9
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