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作 者:赖士刚[1] 史力[1] 王晓欣[1] 孙立斌[1] 张征明[1] 王莞珏 LAI Shi-gang SHI Li WANG Xiao-xin SUN Li-bin ZHANG Zheng-ming WANG Wan-jue(Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China)
机构地区:[1]清华大学核能与新能源技术研究院先进核能技术协同创新中心先进反应堆工程与安全教育部重点实验室,北京100084
出 处:《原子能科学技术》2016年第11期2041-2047,共7页Atomic Energy Science and Technology
基 金:国家科技重大专项资助项目(ZX06901)
摘 要:模块化高温气冷堆(HTR-PM)石墨堆芯结构是多体结构,其动态特性研究是复杂的非线性问题。国内外开展了一系列研究,未能较好解决。为了分析该非线性结构的动态特性,本文介绍一种数值模型,将石墨砖和碳砖简化为质点,各部件的接触简化为连接器单元,通过碰撞试验拟合获取连接器参数。数值模型计算的位移基本同1∶1双层四砖石墨组件试验位移时程结果吻合。分析证明,模型对参数不敏感,计算结果准确高效。因此,可将此模型用于石墨堆芯结构的位移分析。High temperature reactor-modular pebble bed(HTR-PM)graphite core structure is recognized as multi-body structure that introduced complicated non-linear issues into the investigation of dynamic characters. Many attempts were made to research this issue,however,problems still remained.In this paper,a numerical analysis model was introduced,which simplified graphite/carbon bricks as mass point with rotary inertia and contacts of the components as connectors.The parameters of the connectors were obtained from relevant tests.Numerical analysis results match the tests displacement results of 1∶1four-brick-two-layer graphite assembly.Moreover,the numerical model is insensitive to parameters.Hence,this model can be applied in HTR-PM graphite core structure dynamic response under seismic loads with precision and lower calculation cost.
分 类 号:TL341[核科学技术—核技术及应用]
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