进气畸变对某压气机一级叶片振动的影响

EFFECT OF INLET DISTORTION ON BLADE VIBRATION AND INLET DISTORTION TOLERANCE

本文定量地分析了进气畸变激起的 -级叶片的振动应力 ,分析了在不同畸变水平下对应的应力变化趋势 ,并从叶片振动响应角度对评定畸变容限指标的方法进行了初步讨论。

This paper examines the acceptability of inlet distortion from the angle of to the blade strength,and considers the influence of some inlet distortion patterns on the compressor blades vibration.An analytical moethod is provided.Meanwhile,the exciting forces of the circumferential distortion on the compressor blades and the blade responses to these fores are analyzed.The blade vibratory stresses caused by the distortion are calculated.The stress variation at different distortion levels is also investigated,and so the inlet distortion tollerance limit determined by the blade strength is discussed.