基于Workbench的汽轮机低压叶片振动特性研究  

Research on Vibration Characteristics of Steam Turbine Low Pressure Blade Based on Workbench

作　　者：苟小平[1] 范志飞[1] 程叶叶 谢贞军 GOU Xiaoping;FAN Zhifei;CHENG Yeye;XIE Zhenjun(Dongfang Turbine Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方电气评论》2025年第2期44-49,53,共7页Dongfang Electric Review

摘　　要：利用Workbench对低压333叶片和633叶片进行了带预应力的模态分析。每只叶片的分析分为两种模式,一种是计算考虑相邻围带之间的接触,另一种是围带印记面法计算共振频率。两种模式都分别更改围带和叶根的接触方式,以尽可能的模拟真实的接触刚度。得到了不同计算模式下叶片的共振频率,并将共振频率与试验结果进行了对比,找到了最接近试验结果的计算方式。为后续叶片的振动设计提供了参考。The pre-stress modal analysis of low pressure 333 blade and 633 blade is carried out by the workbench.There are two modes of analysis for each blade.One method considered the contact behavior between adjacent shroud.The other is to calculate the resonance frequency by the shroud imprinting surface method.Both modes change the contact mode of shroud and blade root respectively to simulate the real contact stiffness as much as possible.The resonant frequencies of the blades under different calculation modes are obtained,and the resonant frequencies are compared with the experimental results.The calculation method closest to the test results is found.It provides a reference for the vibration design of subsequent blades.

关 键 词：振动 有限元 叶片 接触 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]