摘要
应用模态分析的基本原理和ＣＲＡＳ系统，对某风扇叶片进行了试验和分析，给出了前１２阶振动模态及其固有频率，为该叶片的降噪减振提供了依据和方向。
By the basic principle of modal analysis and CRAS system, experiments and analysis are made on a fan blade， giving first 12 order vibration modes and their respective natural frequencies．This paper provides the foundation and direc-tion of noise reduction and shock absorption of the fan blade.
