期刊文献+

面内开/闭弯载荷作用下压力管道弯头的塑性载荷研究 被引量:4

Plastic Collapse Loads for Piping Elbows under In-plane Open/Close Bending Moment
下载PDF
导出
摘要 采用弹塑性有限元分析技术,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/rm、相对弯曲半径R/rm和弯曲模式下有直管连接弯头的弹塑性行为进行了系统分析,在此基础上分别建立了便于工程应用的无缺陷弯头在开、闭弯作用下的塑性载荷估算式。试验研究表明本文建立的面内开/闭弯塑性载荷估算式能够满足工程实际需要。 Elbow is a type of component widely used in a piping system. So it is very important to know the plastic load carrying capacity of elbow. The experiments and non - linear finite element (FE) analyses indicated that under the open/close bending modes, elbow exhibited different behavior obviously, at the elastic - plastic states. By three- dimensional (3D) non- linear finite element (FE) analyses, using elastic - perfectly- plastic material behavior and taking geometric nonlinearity into account, the elastic - plastic behavior of elbows with various ratios of t/rm and relative bending radius R/rm were investigated in detail, and the closed form equations were established. The comparison of predictions from these newly proposed collapse load equations with experimental data validated that these equations can be used to evaluate the collapse moment for defect - free elbow in engineering practice.
出处 《压力容器》 北大核心 2006年第4期7-12,共6页 Pressure Vessel Technology
基金 国家"十五"重大科技攻关资助项目(2001BA803B03-05)
关键词 弯头 塑性弯矩 极限弯矩 面内开/闭弯载荷 弹塑性有限元分析 elbows plastic moment limit moment in - plane open/close bending moment non - linear finite element (FE) analyses
  • 相关文献

参考文献15

  • 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. 被引量:1
  • 2Miller A G..Review of Limit Loads of Structure Containing Defects,International Journal of Pressure Vessels and Piping,1988,32:197-327. 被引量:1
  • 3Calladine C.R..Limit Analysis of Curved Tubes[J].Mech.Eng.Sci,1974,16(2):85-87. 被引量:1
  • 4Kitching,Zarrabi &Moore.Limit Moment for Smooth Pipe Bend under In-plane Bending[J].Int.J.Mech.Sci,1979,21:731-738. 被引量:1
  • 5Goodall I.W..Large Deformations in Plastically Deforming Curved Tubes Subjected to In-plane Bending[M].CEGB RD/B/N4312,1978. 被引量:1
  • 6郭茶秀..拉、弯、扭、内压载荷下面型缺陷直管及弯管的塑性极限载荷[D].华东理工大学,1999:
  • 7Shalaby 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. 被引量:1
  • 8Chain K L C..Approximate Limit Loads for Pipe Bends with End Constraints[M].Applied Solid Mechanics,1984.275-285. 被引量:1
  • 9许志香..压力管道弯头塑性极限载荷的有限元分析 [D].华东理工大学,2003:
  • 10Sobel.L.H,Newman S Z..Instability Analysis of Elbows in the Plastic Range[A].4th Conference,San Francisco CA,1977.1-11. 被引量:1

同被引文献41

引证文献4

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部