轴系扭振激励下叶片动应力分析及寿命评估  

Dynamic Stress Analysis and Life Evaluation of Blades under Torsional Vibration Excitation of Shafting

作　　者：翁振宇[1] 张勇[2] 马义良[1] 郭魁俊 初世明[1] WENG Zhen-yu;ZHANG Yong;MA Yi-liang;GUO Kui-jun;CHU Shi-ming(Harbin Turbine Company Limited,Harbin 150046,China;Jiangsu Nuclear Power Co.,Ltd.,Lianyungang 222042,China)

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]江苏核电有限公司,连云港222042

出　　处：《汽轮机技术》2021年第3期193-196,共4页Turbine Technology

摘　　要：在长叶片的开发过程中,叶片在轴系扭振激励下的动应力分析是一个重要的设计环节。应用有限元分析了某机组在轴系最危险的两相短路工况下,低压末级叶片的瞬态动应力,评估了叶片在瞬态激励下的循环寿命,为长叶片的安全运行提供了有力的保障。In the process of the development of long blade,blade in the shafting torsional vibration excitation,the dynamic stress analysis is an important part of the design process,in this paper,finite element analysis of a certain unit in shaft is the most dangerous two phase short circuit conditions of low-pressure stage blade at the end of the transient dynamic stress,evaluated the cycle life of blade under transient excitation,to provide powerful guarantee to the safe operation of long blade.

关 键 词：长叶片 轴系扭振响应 动应力 寿命评估 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]