大功率汽轮机成组长叶片三维振动特性分析

Three Dimensional Vibration Analysis of Long Grouped Blade for Large Power Steam Turbine

引入三维实体单元模型和子结构分析方法，提出了大功率汽轮机叶片组静频和动频的计算方法．文中对一工程中实际使用的长叶片组进行了分析，实例分析表明，文中所提供的分析模型可以充分利用现有的计算工具精确分析叶片组的振动特性。

Block elements in three dimensions and substructuring are developed to analyze the static and dynamic characteristics for long grouped blades. Stress distribution and vibration for different groups of blade can be obtained to describe the vibration behavior of a real long blade.