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面外弯矩作用下弯头极限载荷有限元分析 被引量：1

Finite Element Analysis of Elbow Ultimate Load under Out-of-plane Bending Moment
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摘要 采用三维非线性有限元分析技术,将材料简化为理想弹塑性,同时考虑几何非线性影响,针对不同厚径比t/Do、相对弯曲半径R/Do下有直管连接的弯头在面外弯矩(弯曲位移方向垂直弯头轴线平面)作用下进行极限载荷分析,在此基础上建立了便于工程应用的无缺陷弯头的面外塑性极限弯矩估算式。试验结果表明面外弯矩载荷下塑性载荷估算式能够满足工程实际需要。 The three-dimensional （3D） nonlinear finite element analyses （FEA） was used to have the materi- al simplified into ideal elaStoplastic body and have the influence of geometric nonlinearity considered simulta- neously; and the elbow＇ s ultimate load which connected with straight pipes under out-of-plane moment with various thickness-diameter ratio （ t/Do） and relative bending radius （R/Do） was analyzed, and the out-of-plane plastic limit bending moment equations for defect-free elbows in engineering were found. The experimental da- ta can eonfirm the practicability of these equations as the engineering practice required.
作者 段志祥 石坤 沈士明
机构地区 中国特种设备检测研究院 南京工业大学
出处 《化工机械》 CAS 2012年第5期614-617,631,共5页 Chemical Engineering & Machinery
关键词 弯头 塑性极限载荷 面外弯矩 有限元分析 elbow, plastic limit load, out-of-plane bending moment, finite element analysis
分类号 TU378.2 [建筑科学—结构工程]
  • 相关文献

参考文献14

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  • 8王辰,秦宜奋,张宏宇,刘阿龙,李培宁.面内开/闭弯载荷作用下压力管道弯头的塑性载荷研究[J].压力容器,2006,23(4):7-12. 被引量：4
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二级参考文献12

  • 1Griffiths L.F..The Effect of Cracks on the Limit Load of Pipe Bends under In-Plane Bending:Experimental Study[J].Int.J.Mech.Sci,1979,21:119-130.
  • 2Miller A G..Review of Limit Loads of Structure Containing Defects,International Journal of Pressure Vessels and Piping,1988,32:197-327.
  • 3Calladine C.R..Limit Analysis of Curved Tubes[J].Mech.Eng.Sci,1974,16(2):85-87.
  • 4Kitching,Zarrabi &Moore.Limit Moment for Smooth Pipe Bend under In-plane Bending[J].Int.J.Mech.Sci,1979,21:731-738.
  • 5Goodall I.W..Large Deformations in Plastically Deforming Curved Tubes Subjected to In-plane Bending[M].CEGB RD/B/N4312,1978.
  • 6Shalaby M A,Younan.M Y A..Limit Load for Pipe Elbows subjected to In-Plane opening Bending Moments and Internal Pressure[J].Journal of Pressure Vessel Technology,1999,121:17-23.
  • 7Chain K L C..Approximate Limit Loads for Pipe Bends with End Constraints[M].Applied Solid Mechanics,1984.275-285.
  • 8Sobel.L.H,Newman S Z..Instability Analysis of Elbows in the Plastic Range[A].4th Conference,San Francisco CA,1977.1-11.
  • 9Yahiaoui.K,Moffat D.G,Moreton D N..Piping Elbows with Cracks.Part 1:a Parametric Study of the Influence of Crack Size on Limit Loads Due to Pressure and Opening Bending[J].J.Strain Analysis,2000,35(1):35-46.
  • 10Yahiaoui K,Moffat D G,Moreton.D N..Piping Elbows with Cracks Part 2:global finite element and Experimental Plastic loads under Opening Bending[J].Strain Analysis,2000,35(1):47-57.

共引文献14

同被引文献15

  • 1GB/T19624-2004.在用含缺陷压力容器安全评定[S].北京:中国标准出版社.2004.
  • 2Griffiths J E. The Effect of Cracks on the Limit Load of Pipe Bends under In-plane Bending: Experirnental Study [ J ]. International Journal of Mechanical Sci- ences, 1979, 21(2): 119~130.
  • 3Calladine C R. Limit Analysis of Curved Tubes [ J]. Journal of Mechanical Engineering Science, 1974, 16 (2) : 85 -92.
  • 4Shalaby M A, Younan M Y A. Limit Loads for PipeElbows with Internal Pressure under In-plane Ctosing Bending Moments [ C ]. The Proceedings of the 1997 ASME Pressure Vessels and Piping Conference. SanDi- ego : ASME, 1998 : 163 ~ 170.
  • 5ASME Boiler and Pressure Vessel Code Section III, Division 1, Nuclear Power Plant Components [ S] . New York : ASEM, 2013.
  • 6Yahiaoui K, Moffat D, Moreton D. Piping Elbows with Cracks Part 1 : A Parametric Study of the Influence of Crack Size on Limit Loads Due to Pressure and Open- ing Bending [ J]. The Journal of Strain Analysis for Engineering Design, 2000, 35 ( 1 ) : 35 - 46.
  • 7Yahiaoui K, Moffat D, Moreton D. Piping Elbows with Cracks Part 2: Global Finite Element and Ex- perimental Plastic Loads under Opening Bending [J]. The Journal of Strain Analysis for Engineering Design, 2000, 35 ( 1 ) : 47 - 57.
  • 8Hong S P, Kim J H, Kim Y J, et al. Effect of Inter- nal Pressure on Plastic Loads of 90 Elbows with Cir- cumferential Part-Through Surface Cracks under in- plane Bending [ J ]. Engineering Fracture Mechan~ ics, 2010, 77(4): 577 -596.
  • 9Hong S P, Kim J H, Kim Y J. Limit Pressures of 90 Elbows with Circumferential Surface Cracks [ J ]. Engineering Fracture Mechanics, 2009, 76 (14) : 2202 - 2216.
  • 10Kim Y J, Kim Y I, Song T K. Finite Element Plastic Loads for Circumferential Cracked Pipe Bends under In-plane Bending [ J ]. Engineering Fracture Me- chanics, 2007, 74(5): 643-668.

引证文献1

二级引证文献1

化工机械
2012年 第5期

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