锤击法在航空发动机部件模态试验中的常见问题浅析

锤击法模态分析试验技术以其简便、经济、高效的优势在航空发动机强度振动试验领域中得到广泛应用。但由于试验模态分析中的影响因素较多,各因素间往往又相互制约,给模态试验带来一定难度。从测试方法、参数设置、参数识别等方面总结试验中的几个常见问题并加以分析,旨在提高试验质量,给广大工程技术人员以借鉴。

Common problems analysis of impact modal test in aeroengine component

As its convenient,cost-effective and high-efficiency advantage,stamping modal analysis was applicated in the aeroengine strength vibration field.But it brings some difficulty in the analysis of modal test that there are so many influence factors and their interaction.In order to enhance test quality and apply some reference for engineering and technical personnel,several common problems were summarized and analyzed briefly in terms of measure method,parameter-setting,and analysis method.