Effect of contact plasticity on the seismic response of a 7-duct bundle immersed in fluid

doi:10.1016/j.nucengdes.2022.111987

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Effect of contact plasticity on the seismic response of a 7-duct bundle immersed in fluid
	Peng Q(彭青)1,2; Jin YR(靳宇然)1,2; Su XP 3; Liu XM(刘小明)1,2; Wei YG 4
刊名	NUCLEAR ENGINEERING AND DESIGN
	2022-11-01
卷号	398 页码:9
关键词	Nonlinear contact Plasticity Hexagonal bundle Earthquake Finite Element Method
ISSN号	0029-5493
DOI	10.1016/j.nucengdes.2022.111987
通讯作者	Liu, X.(xiaomingliu@imech.ac.cn)
英文摘要	In the reactor core, the ducts, submerged under fluid, are closely packed. As a result, the collision between ducts is inevitable during the seismic load. Understanding seismic response of the ducts needs to consider both the collision between ducts and the inertial effect from the surrounding fluid. For the collision model, we proposed a nonlinear contact model from a full scale simulation to consider the plastic effect during collision; For the fluid effect, we built an acoustic-structural model to obtain the added mass coefficient depending on the duct's location. Next, we integrated the effects from plastic collision and the fluid inertia into a beam model to study the seismic response of a 7-duct bundle, and then discussed the plastic effect on the contact forces, contact durations and duct acceleration. Results show that although contact plasticity hardly affects the ducts' motion, it has a noticeable effect on both contact force and contact energy dissipation. In addition, our result shows that the contact duration for one typical type of collisions tends to be constant.
分类号	二类
资助项目	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[12022210] ; National Natural Science Foundation of China[12032001] ; National Natural Science Foundation of China[11772334] ; Youth Innovation Promotion Association CAS[2018022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040501]
WOS关键词	ADDED-MASS ; CORE ; BEHAVIOR ; CODE
WOS研究方向	Nuclear Science & Technology
语种	英语
WOS记录号	WOS:000868652100007
资助机构	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Liu, X.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90409]
专题	力学研究所_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.UCAS, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Inst Atom Energy, Beijing 102413, Peoples R China; 4.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Peng Q,Jin YR,Su XP,et al. Effect of contact plasticity on the seismic response of a 7-duct bundle immersed in fluid[J]. NUCLEAR ENGINEERING AND DESIGN,2022,398:9.
APA	彭青,靳宇然,Su XP,刘小明,&Wei YG.(2022).Effect of contact plasticity on the seismic response of a 7-duct bundle immersed in fluid.NUCLEAR ENGINEERING AND DESIGN,398,9.
MLA	彭青,et al."Effect of contact plasticity on the seismic response of a 7-duct bundle immersed in fluid".NUCLEAR ENGINEERING AND DESIGN 398(2022):9.