针对压气机叶片结构可靠性问题，在分析影响压气机叶片强度因素的基础上，将压气机叶片为悬臂梁，进而进行理论分析。并利用结构有限元软件对压气机动叶片进行静力学分析与模态分析，对不同厚度的压气机叶片进行有限元计算，分析得到厚度变化对叶片所受最大应力的影响规律，计算该叶片的固有频率和模态，获取坎贝尔图，进而将所得结果为压气机厚度设计和改进以及运行管理中避免共振提供决策依据。
Considering the problem of structure reliability for compressor blade, based on the chief factors of the strength of compressor blade. The analyses of the blade equivalent as cantilever beam are carried out in this paper. Statics and modal analyses are calculated by structure finite element software. Under various thicknesses of blades, structure finite element and the law of maximum stress are investigated. The inhere frequency and modal is worked out, and the Campbell diagram is given hereby. The results show that the correct thicknesses can avoid the resonance condition for compressor design, and improve operation management.
2017,(): 105-110 收稿日期：2017-09-25
DOI：10.3404/j.issn.1672-7649.2017.11.020
分类号：TK47
作者简介：刘隆波(1982-),男,博士研究生,研究方向为可靠性、测试性与综合保障
参考文献：
[1] 李其汉, 王延荣. 航空发动机结构强度设计问题[M]. 上海: 上海交通大学出版社, 2014.
[2] 李娜. 涡轮增压器压气机叶片静态和动态特性研究及优化设计[D]. 大连: 大连交通大学, 2007.
[3] 曲文浩. 航空发动机压气机叶片的静力学及模态分析[D]. 沈阳: 东北大学, 2012.
[4] 孙涛, 王毅, 王晓放, 等. 变厚度叶片对离心压缩机结构强度和性能影响[J]. 大连理工大学学报, 2012, 52(1): 29-34.
[5] 马辉, 能海强, 吕颂, 等. 变厚度壳单元的旋转叶片振动响应分析[J]. 机械设计与制造, 2013(11): 109-112.
[6] 张震宇. 压气机叶片TC4钛合金超高周疲劳失效机制及强度-寿命预测方法[D]. 北京: 北京理工大学, 2015.
[7] 古成中, 吴新跃. 燃气轮机叶片实体建模[J]. 船海工程, 2006, 35(3): 69-72.
[8] 付雷, 丰镇平. 毫米级微型燃气轮机系统设计原则与可实现循环分析[J]. 西安交通大学学报, 2011, 45(5): 42-46.
[9] 蒙先信, 段虞荣, 李佩仙. 涡轮增压器压气机导风轮叶片的强度和振动计算[J]. 重庆大学学报(自然科学版), 1978, (1): 155-157.
[10] GENG S J, CHEN N X, ZHANG H W, et al. An improvement on the efficiency of a single rotor transonic compressor by reducing the shock wave strength on the blade suction surfaces [J]. Proceedings of the Institute of Mechanical Engineering, 2012, 21(2): 127-135.
[11] YAMAZAKI Y, SHIN I, YOSHIDA K T. Evaluation of interfacial strength by an instrumented indentation method and its application to an actual TBC vane [J]. Proceedings of the Institute of Mechanical Engineering, 2011, 24(2): 109-117.
