Boundary effect on the dynamic response of a 7-hexagon fuel ducts submerged in fluid

doi:10.1016/j.nucengdes.2020.110870

IMECH-IR > 非线性力学国家重点实验室

	Boundary effect on the dynamic response of a 7-hexagon fuel ducts submerged in fluid
	Peng Q(彭青)1,2 ; Su, X.3; Li, J.4; Gao, F.3; Liu XM(刘小明)1,2 ; Wei, Y. G.5
通讯作者	Liu, X.(xiaomingliu@imech.ac.cn)
发表期刊	NUCLEAR ENGINEERING AND DESIGN
	2020-12-15
卷号	370 页码:10
ISSN	0029-5493
摘要	Understanding the dynamic response of core structure in a fast reactor under earthquake could provide a guideline for the reactor design. A core consists hundreds of ducts; this fact challenges full-scale experiments or simulations. A popular solution is to use a matrix of 7 ducts to represent the whole core, yet the effect of boundary constraint on the experiment or simulation representation has not been reported so far. In this article, two types (type 1 and type 2 as in graphical abstract) of boundary constraint, as a bracketing limit to the real world situation, has been investigated with a coupled acoustic-structural (CAS) model, and the effects of the gap size on the dynamics and the seismic response are explored. Results show that type 2 constraint exerts a stronger constraint than type 1 constraint does and synchronizes ducts with ground excitations. In addition, a smaller gap under type 1 boundary constraint reduces the eigenfrequencies and introduces stronger coupling effect between ducts.
关键词	Hexagon bundle Seismic response Coupled acoustic-structure Finite element simulation Fluid-structure interaction
DOI	10.1016/j.nucengdes.2020.110870
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000598781300005
关键词[WOS]	FINITE-ELEMENT FORMULATIONS ; CORE SEISMIC BEHAVIOR ; ADDED-MASS ; HEXAGONAL CYLINDERS ; PRESSURES ; VIBRATION
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
资助项目	National Natural Science Foundation of China[11772334] ; National Natural Science Foundation of China[11890681] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; Youth Innovation Promotion Association CAS[2018022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040501]
项目资助者	National Natural Science Foundation of China ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Liu, X.
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85901
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Inst Atom Energy, Beijing 102413, Peoples R China; 4.China Earthquake Adm, Inst Engn Mech, Key Lab Earthquake Engn & Engn Vibrat, Harbin 150080, Peoples R China; 5.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Peng Q,Su, X.,Li, J.,et al. Boundary effect on the dynamic response of a 7-hexagon fuel ducts submerged in fluid[J]. NUCLEAR ENGINEERING AND DESIGN,2020,370:10.
APA	彭青,Su, X.,Li, J.,Gao, F.,刘小明,&Wei, Y. G..(2020).Boundary effect on the dynamic response of a 7-hexagon fuel ducts submerged in fluid.NUCLEAR ENGINEERING AND DESIGN,370,10.
MLA	彭青,et al."Boundary effect on the dynamic response of a 7-hexagon fuel ducts submerged in fluid".NUCLEAR ENGINEERING AND DESIGN 370(2020):10.

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