Dynamic characteristics identification of two graphite bricks in molten salt reactor considering fluid-structure interaction

doi:10.1016/j.nucengdes.2018.06.015

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Dynamic characteristics identification of two graphite bricks in molten salt reactor considering fluid-structure interaction
	Zhong, Y ; Yang, X ; Ding, D ; Zou, Y ; Tsang, DKL
刊名	NUCLEAR ENGINEERING AND DESIGN
	2018
卷号	335 期号:-页码:409-416
关键词	MASS
ISSN号	0029-5493
DOI	10.1016/j.nucengdes.2018.06.015
文献子类	期刊论文
英文摘要	Graphite core plays a very important role in thorium molten salt reactor (TMSR) served as a reflector, a moderator as well as a structural material. The whole graphite core is submerged in molten salt during operation and consists of a large number of graphite bricks interconnected with keys and dowels. The molten salt as a fluid will affect the dynamic behavior of the graphite core. This phenomenon is called fluid-structure interaction (FSI). In order to maintain the integrity of the graphite core under a seismic event, it is essential to predict dynamic characteristics of the graphite bricks affected by FSI. In this paper a 1/4 scaled-down test model derived from similarity analysis will be presented. The nonlinear response of the graphite brick under the excitation of the sinusoidal harmonic is regarded as a single degree of freedom system. The dynamic characteristics of added mass and added damping can be obtained by fitting the time history of models' displacement subjected to simple harmonic motion. The experimental results shown that the added mass and the added damping are strongly dependent on the gap size between two bricks. Furthermore, a three-dimensional finite element model has been derived for the dynamic analysis of two graphite bricks with molten salt and the modelling parameters are obtained from the experiment. We found that the results from the numerical method are in good agreement with the experiment.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30911]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Dept Nucl Reactor Mat & Engn, Shanghai 201800, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Y,Yang, X,Ding, D,et al. Dynamic characteristics identification of two graphite bricks in molten salt reactor considering fluid-structure interaction[J]. NUCLEAR ENGINEERING AND DESIGN,2018,335(-):409-416.
APA	Zhong, Y,Yang, X,Ding, D,Zou, Y,&Tsang, DKL.(2018).Dynamic characteristics identification of two graphite bricks in molten salt reactor considering fluid-structure interaction.NUCLEAR ENGINEERING AND DESIGN,335(-),409-416.
MLA	Zhong, Y,et al."Dynamic characteristics identification of two graphite bricks in molten salt reactor considering fluid-structure interaction".NUCLEAR ENGINEERING AND DESIGN 335.-(2018):409-416.