汽轮发电机组弹簧隔振基础模型试验模态分析  

Modal Analysis of Experiment on Model of Spring Vibration Isolated Turbine-Generator Foundation

作　　者：安栋[1] 孙昕[2] 屈铁军[1] 尹学军 邵晓岩 

机构地区：[1]北方工业大学建筑工程学院,北京100144 [2]华东电力设计院,上海200063 [3]青岛科而泰环境控制技术有限公司,青岛266000

出　　处：《北方工业大学学报》2012年第3期84-88,共5页Journal of North China University of Technology

基　　金：国家自然科学基金项目(50678001);北京市教委科技发展计划重点项目(KZ200710009005)

摘　　要：采用随机激励法对某电厂的大型汽轮发电机组弹簧隔振基础1∶10模型的动力特性进行了模态分析,得到了结构的自振频率和振型.运用相似理论获得了原型的动力特性,并将试验结果与ANSYS有限元软件分析结果及STARDYNE动力计算结果进行比较,比较得到试验结果与两种数模分析结果吻合较好.Dynamic characteristics of 1 ：10 model of spring vibration isolated turbine generator foundation are obtained from modal analysis of the random excitation method. Natural frequency and vibration mode of the structure are obtained from the test. Dynamic characteristics of prototype are obtained using the similarity theory. The experimental result is compared with the theoretical result of ANSYS and dynamic computation results of STARDYNE. The experimental result is in good agreement with that of the numberical analysis.

关 键 词：汽轮发电机 弹簧隔振基础 模态试验 自振特性 

分 类 号：TU271.1[建筑科学—建筑设计及理论]