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真实工况下,涡轮叶片的型面测量、变化分析及其对性能的影响,是需要研究解决的问题。针对目前研究普遍采用仿真叶片模型,且涡轮叶片研究薄弱问题,开展了涡轮叶片型面测量、建模、模型比对以及性能分析完整系统分析。结合自动开发的三维扫描系统,完成了真实工况下的叶片型面测量及差异量化评估,在叶片建模基础之上,采用有限元分析技术,对叶片在离心负荷作用下的形变、等效弹性应变以及等效应力进行分析,总结其变化规律,得出叶片型面的微小变化对性能的影响趋势。验证数据研究可进一步推动构建涡轮叶片性能模型,并指导我国发动机设计与维修。
Under real operating conditions, the measurement and analysis of turbine blade profile and its impact on performance are problems to be solved. In view of the fact that the simulation blade model is generally used in the current research and the turbine blade research is weak, a complete system analysis of turbine blade profile measurement, modeling, model comparison and performance analysis is carried out. Combined with the automatic developed 3D scanning system, the blade surface measurement and differential quantitative assessment under real working condition are completed. Based on the blade modeling, the finite element analysis technology is used to analyze the deformation of the blade under the centrifugal load. Elastic strain and equivalent stress were analyzed, and the variation rule was summarized, and the influence trend of small change of blade profile on performance was obtained. Verification data research can further promote the construction of turbine blade performance model, and guide our engine design and maintenance.