复杂连接形式的汽轮机长叶片振动特性研究  

Studies of Vibration Characteristics of Sophisticatedly Laced Long Blades

作　　者：李辛毅[1] 安宁[1] 王乐天[1] 季葆华[1] 孟庆集[1] 

机构地区：[1]西安交通大学

出　　处：《动力工程》1997年第1期38-40,59,共4页Power Engineering

摘　　要：利用空间扭曲梁的有限元模型，对带有复杂连接件形式的汽轮机扭曲长叶片的振动特性进行了计算分析。介绍了一种降阶技术用于解决采用阻尼拉金成圈结构时计算量太大的困难。在此分析基础上，对８５１ｍｍ叶片进行了计算，获得了比较满意的结果。Abstract With the help of finite element models of spacially tisisted beams a vibration characteristic calculation analysis has been performed for sophisticatedly laced long txisted steam turbine blades. The paper introduces an order reducing technique for easing the difficulties caused by the entailed excession calculation volume of blading structures with circumvallating damping wires. With analysis results as a basis, a calculation was performed for the 851 mm long blade with relatively satisfactory results.

关 键 词：汽轮机 扭叶片 末级长叶片 有限元法 振动 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]