CAJ | 학술논문

对叶轮机叶片缘板金属摩擦阻尼器进行了实验研究。着重研究了摩擦阻尼器对叶片的一阶弯曲振型的影响。研究表明，利用金属摩擦阻尼器可以有效地降低叶片的振动；通过合理选择阻尼器的质量（即正压力），可以最大限度地降低叶片的弯曲振动应力，即存在一最优正压力；并且随着激振力的增加，这一最优正压力也将随之增加。因此，它是叶轮机械中一种非常简单有效的减振措施。
대협륜궤협편연판금속마찰조니기진행료실험연구。착중연구료마찰조니기대협편적일계만곡진형적영향。연구표명，이용금속마찰조니기가이유효지강저협편적진동；통과합리선택조니기적질량（즉정압력），가이최대한도지강저협편적만곡진동응력，즉존재일최우정압력；병차수착격진력적증가，저일최우정압력야장수지증가。인차，타시협륜궤계중일충비상간단유효적감진조시。
Experiments were conducted in laboratory to investigate theeffects of platform friction dampers on resonant stresses in gas turbine blades.The results show that the resonant response can be attenuated greatly through the use of friction dampers for the fundamental bending mode of the blade.The decrease of the response can be as large as more than 70％ by optimizing the mass of damper,which should be increased with the magnifying of excitation force level.Platform friction damper is an effective measure to reduce the blade vibration in gas turbine.