一、前言 汽轮机叶片和喷气发动机风扇叶片等旋转叶片,特别是大型的和高速运转的旋转叶片,在使用时由振动引起的疲劳破坏是个重大的问题.为了防止疲劳破坏,必须进行防止共振处理和使振动衰减的处理。然而,汽轮机叶片等的振动情况很复杂,要在设计上完全防止共振是困难的.因此,使振动衰减对于防止叶片的疲劳破坏是很重要的。 I. INTRODUCTION Rotor blades, such as turbine blades and jet engine fan blades, especially large-scale and high-speed rotating blades, are a major problem in the use of the fatigue damage caused by vibration. In order to prevent fatigue damage, it is necessary to prevent resonance processing and Vibration attenuation processing. However, the vibrations of the turbine blades and the like are complicated and it is difficult to completely prevent the resonance in the design, so it is important to prevent the vibration from damaging due to the fatigue damage of the blades.