CAJ | 학술논문

自带冠叶片冠间接触碰撞减振结构具有减振、方便安装与检修、制造精度要求低等优点,已广泛用于汽轮机设计制造并在多台汽轮机上安全运行多年,但目前对这种结构的减振机理和减振效果的研究却很不全面.结合国内外碰撞振动理论的研究成果,从自带冠叶片的碰撞振动特性、动力学模型、数值方法和实验研究等方面来介绍该领域的研究现状,着重阐述对该领域相关发展方向的一些看法,最后展望该领域以后需深入研究的几个关键问题.
자대관협편관간접촉팽당감진결구구유감진、방편안장여검수、제조정도요구저등우점,이엄범용우기륜궤설계제조병재다태기륜궤상안전운행다년,단목전대저충결구적감진궤리화감진효과적연구각흔불전면.결합국내외팽당진동이론적연구성과,종자대관협편적팽당진동특성、동역학모형、수치방법화실험연구등방면래개소해영역적연구현상,착중천술대해영역상관발전방향적일사간법,최후전망해영역이후수심입연구적궤개관건문제.
Integral shroud blades with a contact-impact damping structure in tips have advantages of vibration re-duction, convenient installation and low precision for manufacturing. They were successfully applied in stream turbines for safe operation many years ago. But, the study on the damping mechanism and damping effect of such a structure was rath-er limited. Combined with study developments of vibro-impact theory, the research situation of integral shroud blades was summarized from the aspects, such as, characteristics of vibro-impact, dynamic model, numerical method and experimen-tal studies. Several key problems for future study were also presented.