| Proactive regulation of axial crushing behavior of thin-walled circular tube by gradient grooves |
| Wei YP(魏延鹏) ; Yang Z; Yan H; Guo YC; Wu XQ(吴先前); Huang CG(黄晨光); Wei, YP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
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| 发表期刊 | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
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| 2016
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| 卷号 | 108页码:49-60 |
| ISSN | 0020-7403
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| 摘要 | The progressive buckling behavior of a gradient grooved tube (GGT) designed for high temperature gas cooled reactor (HTR) is systematically studied in this paper. Based on the plastic hinge formation process, a sectionalized theoretical model is established to predict the quadratic upward trend of crushing force of GGT. The ordered and stable energy absorbing process of GGT is examined by low-speed axial impact using drop hammer test machine. The effect of proactive regulation parameters, including non dimensional groove width W/(h(0)+h), groove depth h(0)/h and half wavelength (H+W-h)/root Dh on buckling modes and force-displacement curve is determined by experiments and FE simulation. The non-dimensional groove width W/(h+h(0)) is determined as pi/2 according to the geometry coordination of bending grooves. The non-dimensional groove depth h(0)/h influences local buckling behavior and the critical value 0.6 for regular bending has been determined by numerical simulation. The quadratic trend force-displacement curves of GGT can be actively controlled by (H+W-h)/root Dh within a certain range less than 1.2. Free-fall impact experiments show that GGT has a better stability than perfect tube when used as an energy absorber to protect the graphite in HTR from slender control rod impact. (C) 2016 Elsevier Ltd. All rights reserved. |
| 关键词 | Gradient Grooved Tube (Ggt)
Proactive Regulation
Progressive Buckling
Half Wavelength
Sectionalized Crushing Force
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| DOI | 10.1016/j.ijmecsci.2016.01.033
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000373553700006
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| 关键词[WOS] | Gradient grooved tube (GGT)
; Proactive regulation
; Progressive buckling
; Half wavelength
; Sectionalized crushing force
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| WOS研究方向 | Engineering
; Mechanics
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| WOS类目 | Engineering, Mechanical
; Mechanics
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| 项目资助者 | The authors would like to thank the National Natural Science Foundation of China (Grant no. 11502274, 11002150, 11332011, 11402277) and the Basic Research Equipment Project of the Chinese Academy of Sciences (YZ200930) for financial support.
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| 课题组名称 | LMFS冲击与耦合效应(LHO)
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| 论文分区 | 一类
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| 力学所作者排名 | True
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/59539
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Wei, YP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
推荐引用方式
GB/T 7714 |
Wei YP,Yang Z,Yan H,et al. Proactive regulation of axial crushing behavior of thin-walled circular tube by gradient grooves[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2016,108:49-60.
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| APA |
魏延鹏.,Yang Z.,Yan H.,Guo YC.,吴先前.,...&Wei, YP .(2016).Proactive regulation of axial crushing behavior of thin-walled circular tube by gradient grooves.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,108,49-60.
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| MLA |
魏延鹏,et al."Proactive regulation of axial crushing behavior of thin-walled circular tube by gradient grooves".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 108(2016):49-60.
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