模拟堆芯散体结构地震响应的简化新方法
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摘要
针对核反应堆堆芯散体结构在地震载荷作用下的复杂响应,提出一种高效的三维模拟方法。该方案采用Abaqus软件中刚体及连接器功能,将堆芯散体结构简化为弹簧和阻尼器链接的质点系统,通过合理的简化获得相关力学参数。同时开发出一套脚本程序以实现堆芯结构三维简化模型的参数化建模。数值算例表明,在保证模拟工程精度的前提下,该方法的计算效率比常规方法提高百倍以上。
An efficient 3D approach is proposed for simulating the complicated responses of the multi-body structure in reactor core under seismic loading.By utilizing the rigid-body and connector functions of the software Abaqus,the multi-body structure of the reactor core is simplified as a mass-point system interlinked by spring-dashpot connectors.And reasonable schemes are used for determining various connector coefficients.Furthermore,a scripting program is also complied for the 3D parametric modeling.Numerical examples show that,the proposed method can not only produce the results which satisfy the engineering requirements,but also improve the computational efficiency more than 100 times.
An efficient 3D approach is proposed for simulating the complicated responses of the multi-body structure in reactor core under seismic loading.By utilizing the rigid-body and connector functions of the software Abaqus,the multi-body structure of the reactor core is simplified as a mass-point system interlinked by spring-dashpot connectors.And reasonable schemes are used for determining various connector coefficients.Furthermore,a scripting program is also complied for the 3D parametric modeling.Numerical examples show that,the proposed method can not only produce the results which satisfy the engineering requirements,but also improve the computational efficiency more than 100 times.
引文
[1]Ikushima T,Honma T.Simplified Analytical Model forHTGR Core Seismic Response[J].Journal of NuclearScience and Technology,1979,16(8):605-612.
[2]Ikushima T,Nakazawa T.A Seismic Analysis Method fora Block Column Gas-Cooled Reactor Core[J].NuclearEngineering and Design,1979,55:331-342.
[3]Ikushima T,Honma T.Seismic Response of HighTemperature Gas-cooled Reactor Core with Block-TypeFuel,(III)Vibration Experiment of Two-DimensionalVertical Slice Core Model[J].Journal of Nuclear Scienceand Technology,1981,18(7):514-524.
[4]Honma T,Ishizuka H.Seismic Research on Block-TypeHTGR Core[J].Nuclear Engineering and Design,1982,71:195-215.
[5]Iyoku T,Smita J,Ishihara M,et al.R&D on CoreSeismic Design[J].Nuclear Engineering and Design,2004,233:225-234.
[6]Ishihara M,Iyoku T,Futakawa M.Evaluation of aSeismic Integrity in the HTTR Core-bottom Structure IV,Structural Integrity of Connecting Elements betweenGraphite Components[J].Nuclear Engineering andDesign,1995,154:83-95.
[7]Iyoku T,Inagaki Y.Seismic Study of High-temperatureEngineering Test Reactor Core Graphite Structures[J].Nuclear Technology,1992,99:158-168.
[8]Ikushima T."SONATINA-2V",a Computer Program forSeismic Analysis of the Two-Dimensional Vertical SliceHTTR Core[R].Japan Atomic Energy Research Institute,1982.
[9]Kim H K,Lee J S.Development of Core SeismicAnalysis Models for KNGR Fuel Assemblies Associatedwith 0.3g Seismic Loads[J].Nuclear Engineering andDesign,2002,212:201-210.
[10]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2006.
[11]Abaqus Scripting User's Manual,Version 6.9[S].RI,USA:Dassault Simula Corp.,2009.
[2]Ikushima T,Nakazawa T.A Seismic Analysis Method fora Block Column Gas-Cooled Reactor Core[J].NuclearEngineering and Design,1979,55:331-342.
[3]Ikushima T,Honma T.Seismic Response of HighTemperature Gas-cooled Reactor Core with Block-TypeFuel,(III)Vibration Experiment of Two-DimensionalVertical Slice Core Model[J].Journal of Nuclear Scienceand Technology,1981,18(7):514-524.
[4]Honma T,Ishizuka H.Seismic Research on Block-TypeHTGR Core[J].Nuclear Engineering and Design,1982,71:195-215.
[5]Iyoku T,Smita J,Ishihara M,et al.R&D on CoreSeismic Design[J].Nuclear Engineering and Design,2004,233:225-234.
[6]Ishihara M,Iyoku T,Futakawa M.Evaluation of aSeismic Integrity in the HTTR Core-bottom Structure IV,Structural Integrity of Connecting Elements betweenGraphite Components[J].Nuclear Engineering andDesign,1995,154:83-95.
[7]Iyoku T,Inagaki Y.Seismic Study of High-temperatureEngineering Test Reactor Core Graphite Structures[J].Nuclear Technology,1992,99:158-168.
[8]Ikushima T."SONATINA-2V",a Computer Program forSeismic Analysis of the Two-Dimensional Vertical SliceHTTR Core[R].Japan Atomic Energy Research Institute,1982.
[9]Kim H K,Lee J S.Development of Core SeismicAnalysis Models for KNGR Fuel Assemblies Associatedwith 0.3g Seismic Loads[J].Nuclear Engineering andDesign,2002,212:201-210.
[10]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2006.
[11]Abaqus Scripting User's Manual,Version 6.9[S].RI,USA:Dassault Simula Corp.,2009.
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