Effect of crystal orientation on elastic stresses and vibration characteristics of nickel-based single crystal turbine blade

被引:10
作者
Li, Lei [1 ]
Zeng, Yan [1 ]
Li, Jie [2 ]
Zhao, Yanchao [1 ]
Yuan, Tianyu [1 ]
Yue, Zhufeng [1 ]
机构
[1] Northwestern Polytech Univ Changan Campus, Dept Engn Mech, Xian 710129, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ Changan Campus, Sch Power & Energy, Xian 710129, Shaanxi, Peoples R China
来源
MATERIALS TODAY COMMUNICATIONS | 2023年 / 35卷
基金
中国国家自然科学基金;
关键词
Nickel -based single crystal Turbine blade; Crystal orientation; Elastic stresses; Vibration characteristics; CRYSTALLOGRAPHIC ORIENTATIONS; FATIGUE FAILURE; CREEP DAMAGE; SUPERALLOY; ENGINE; DEFORMATION; ANISOTROPY; BEHAVIOR; FRACTURE; AIR;
D O I
10.1016/j.mtcomm.2023.106135
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The impact of crystal orientation on the elastic stress and vibration properties of nickel-based single-crystal turbine blades is complex and can affect their performance. By defining and describing single-crystal blade orientation by Euler angles rotation, this work presents the influence rule of crystal orientation on the elastic stress and dynamic frequency of blade through lotus leaf diagrams. The results shows that the rotations of three Euler angles can affect significantly the distribution of the region where the stress extremum occurs, and the difference between the maximum and minimum of stress is 210.11 MPa. In addition, the degree and mechanism of influence of Euler angles rotations on the several order frequencies are different. From the 1st to 3st order mode, the influence range of the crystal orientation on the dynamic frequency increases gradually, but the frequency ranges of the 3st, 4st and 5st order are roughly the same, and the frequency range of 6st order is the largest variation range. The blade is most likely to generate resonance when the second-order frequency reaches the minimum f2min. The Euler angle & beta; has a significant influence on the resonance margin, and the larger resonance margin can be obtained easily when the Euler angle & beta; is large enough.
引用
收藏
页数:16
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