压气机叶片厚度对强度的影响研究

摘要

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.