核电厂循环水泵房电机梁的谐响应振动分析
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摘要
针对核电厂机组运转时循环水泵房电机梁的振动问题,建立了结构的有限元模型,利用AN-SYS对模型结构进行了谐响应分析,以确定电机梁在机组运行状况下的最大内力及位移,为设计提供依据。首先,对结构模型进行了模态分析,确定谐响应分析的频率范围及设备运转振动是否与电机梁共振;然后,对模型施加动力简谐荷载,计算电机梁的最大位移响应及控制内力。计算结果表明,结构设计能够适应机器设备振动要求。
In order to consider the vibrational problem of electiric machine-bearing beam in circulation water pump house,the finite element model of the slructure was established.Harmonic response analysis of the model structure was carried out by using ANSYS,and then the maximum force and displacement of the beam was calculated under the condition of the unit operation.First,on the basis of modal analysis,the frequency range of harmonic response analysis was determined and whether there is resonance between water pump equipment and beam vibration or not was researched.Second,the maximum displacement response and control force of the beam were calculated by applying the dynamic harmonic excitation on the model structure.The results show that the structure design can adapt to the request of machine and equipment vibration.
In order to consider the vibrational problem of electiric machine-bearing beam in circulation water pump house,the finite element model of the slructure was established.Harmonic response analysis of the model structure was carried out by using ANSYS,and then the maximum force and displacement of the beam was calculated under the condition of the unit operation.First,on the basis of modal analysis,the frequency range of harmonic response analysis was determined and whether there is resonance between water pump equipment and beam vibration or not was researched.Second,the maximum displacement response and control force of the beam were calculated by applying the dynamic harmonic excitation on the model structure.The results show that the structure design can adapt to the request of machine and equipment vibration.
引文
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[14]中华人民共和国国家标准.动力机器基础设计规范(GB50040-96).1997CHINA STANDARDIZATION,Code for Design of Dynamicmachine Foundation,(GB 50040-96).1997
[2]薛志成,王振清,裴强,吴爽.核电站取水口建筑物的抗震性能分析[J].工业建筑,2012,42(8):69-74.XUE Zhi cheng,WANG Zhen qing,PEI qiang,WU Shuang.Seismic performance analysis of water intake building in a nuclear power station[J].In-dustrial Construction,2012,42(8):69-74.
[3]薛志成,王振清,王立涛,裴强.核电站结构地震动态响应进行计算研究[J].清华大学学报(自然科学版),2012,52(8):1096-1101.XUE Zhi cheng.WANG Zhen qing,WANG Litao,PEI Qiang.Parallel finite element computing of nuclear power station stucture earthquake dynamicresponse[J].J.tsinghua Univ.(Sci.&Tech.),2012,52(8):1096-1101
[4]王新敏.ANSYS工程结构数值分析[M].北京:人民邮电出版社.WANG Xinmin.ANSYS Numerical Analysis of Engineering Structures[M].Beijing,Posts&Telecom Press.
[5]王新,李同春,塔娜.大型灯泡贯流式泵站振动研究概述[J].中国农村水利水电,2009,2:83-85.WANG Xin,LI Tongchun,TA Na.Overview on Vibration Research on Large-scale Bulb Tubular Pumping Station[J].China Rural Water andHydropower,2009,2:83-85.
[6]张树邦,付长青.水轮发电机下机架振动模态和径向谐响应分析[J].大电机技术,2003,4:20-22.ZHANG Shubang,FU Changqing.Analysis of Vibration More and Response for Hydro-generator Lower Bracket[J].Large Electric Machine andHydraulic Turbine,2003,4:20-22.
[7]胡卫强,王敏庆.振动测试中传感器数目和位置设计的谐响应分析方法[J].噪声与振动控制,2006,4:114-116.HU Weiqiang,WANG Minqing.Using Harmonic Response Analysis Method to Design Placement and Number of Sensors in Vibration Test[J].Noise and Vibration Control,2006,4:114-116.
[8]黄永辉,韩旭,黄芬.基于减基法的结构谐响应快速分析方法[J].振动与冲击,2009,28(7):61-64.HUANG Yonghui,HAN Xu,HUANG Feng.An efficient algorithm for harmonic response analysis of structures based on a reduced-basis method[J].Journal of Vibration and Shock,2009,28(7):61-64.
[9]张宪,何洋,钟江等.疲劳振动试验台的模态与谐响应分析[J].机械设计与制造,2008,4:12-14.ZHANG Xian,HE Yang,ZHONG Jiang,et al.Modal and Harmonic Analysis of Fatigue Vibration Test-bed[J].Machinery Design&Manufac-ture,2008,4:12-14.
[10]马震岳,张波.水电站厂房机墩结构加载方式探讨及刚度分析[J].水力发电,2009,35(7):40-43.Ma Zhenyue,Zhang Bo.Loading Mode and Stiffness Analysis of Powerhouse Foundation Structure of Hydropower Station[J].Journal of Hydroe-lectric Engineering,2009,35(7):40-43.
[11]徐进友,刘建平,宋轶民,王世宇.大型水电站地下厂房结构动力特性研究[J].水电能源科学,2009,27(5):97-99.XU Jinyou,LIU Jianping,SONG Yimin,WANG Shiyu.Study on Dynamic Characteristics of Underground Powerhouse Structure of Large Hydro-power Station[J].Water Resources and Power,2009,27(5):97-99.
[12]陈剑,姚新刚,沈振中.洮河峡城水电站圆筒式机墩的谐响应分析[J].南水北调与水利科技,2008,6(2):84-86.CHEN Jian,YAO Xin-gan,SHEN Zhen-zhong.Harmonic Analysis on the Columnar Pier Base of the Xiacheng Hydropower Plant on TaoheRiver[J].South-to-North Water Transfers and Water Science&Technology,2008,6(2):84-86.
[13]徐伟,闫滨,杨国范,胡志华.水电站地下厂房结构三维有限元数值模拟研究[J].沈阳农业大学学报,2008,39(6):750-752.XU Wei,YAN Bin,YANG Guo-fan,HU Zhi-hua.3-D Finite Element Computational Analysis on Structural Characteristics of UndergroundHydro-power Station[J].Journal of Shenyang Agricultural University,2008,39(6):750-752.
[14]中华人民共和国国家标准.动力机器基础设计规范(GB50040-96).1997CHINA STANDARDIZATION,Code for Design of Dynamicmachine Foundation,(GB 50040-96).1997
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