IMECH-IR  > 流固耦合系统力学重点实验室
Experimental and numerical study of circular, stainless thin tube energy absorber under axial impact by a control rod
Yang Z(杨哲); Yan H; Huang CG(黄晨光); Diao XZ; Wu XQ(吴先前); Wang SH; Lu LL(路玲玲); Liao LJ(廖丽涓); Wei YP(魏延鹏)
Source PublicationThin-Walled Structures
2014-09
Volume82Pages:24-32
ISSN0263-8231
Abstract

In this study, several crashworthiness parameters of a circular, thin tube energy-absorbing structure, which is used in a high-temperature, gas-cooled reactor (HTR), are studied experimentally and numerically at various tube thicknesses, temperatures and impact velocities. The average crushing force is fundamentally dependent on strain hardening, strain rate hardening, and, particularly, temperature softening of the material. The peak forces during buckling are significantly affected by the local strain rate in the material and exhibit a decreasing trend in sequentially formed folds. Reducing the tube thickness is an effective method to weaken the average crushing force, but it does not weaken the maximum crushing force. Additionally, the stress concentration at the edge of the backplate-graphite contact surface is evaluated in detail to ensure the structural security of the energy absorber. (C) 2014 Elsevier Ltd. All rights reserved.

KeywordCircular Thin Tube Energy Absorber Progressive Buckling Axial Impact Strain Rate Interfacial Pressure
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000339693300003
Funding OrganizationThis work is supported by National S&T Major Project (Grant no. 2008ZX06902-005).
DepartmentLMFS冲击与耦合效应(LHO)
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49037
Collection流固耦合系统力学重点实验室
Corresponding AuthorWei YP(魏延鹏)
Recommended Citation
GB/T 7714
Yang Z,Yan H,Huang CG,et al. Experimental and numerical study of circular, stainless thin tube energy absorber under axial impact by a control rod[J]. Thin-Walled Structures,2014,82:24-32.
APA Yang Z.,Yan H.,Huang CG.,Diao XZ.,Wu XQ.,...&Wei YP.(2014).Experimental and numerical study of circular, stainless thin tube energy absorber under axial impact by a control rod.Thin-Walled Structures,82,24-32.
MLA Yang Z,et al."Experimental and numerical study of circular, stainless thin tube energy absorber under axial impact by a control rod".Thin-Walled Structures 82(2014):24-32.
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