Fast Finite Element Stress Prediction for Large Thick-Wall Welded Cylinder with Angle-Inserting Elbow

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Fast Finite Element Stress Prediction for Large Thick-Wall Welded Cylinder with Angle-Inserting Elbow

更新时间：2025-05-01

- Fast Finite Element Stress Prediction for Large Thick-Wall Welded Cylinder with Angle-Inserting Elbow
- Vol. 44, Issue 3, Pages: 68-71(2010)
- 作者机构：
  
  西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG146.2
- Online First：10 March 2010，
  
  Published：2010
- 稿件说明：
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Fast Finite Element Stress Prediction for Large Thick-Wall Welded Cylinder with Angle-Inserting Elbow[J]. 2010, 44(3): 68-71.
DOI：

Fast Finite Element Stress Prediction for Large Thick-Wall Welded Cylinder with Angle-Inserting Elbow[J]. 2010, 44(3): 68-71. DOI：

摘要

针对大型厚壁焊接结构尺寸大、焊接时间长

以及有限元计算需要耗费大量时间和空间的特点

基于ANSYS有限元软件

建立了简化焊道数、简化移动热源及两者都简化的多道焊过程应力有限元快速预测模型.针对厚度达125 mm的筒体斜插弯管接头

分别采用3种简化模型预测了其残余应力及过程应力的演化特征

得出了3种简化模型在进行大型厚壁结构多道焊过程应力预测中的异同.结果表明:采用简化焊道数的方法计算接头应力

在焊道填充方向的误差大于简化移动热源的方式; 当研究相同焊道平面内的应力状态时

简化移动热源的方式比简化焊道数具有更大误差.这是因为简化移动热源

会增大接头的过程应力峰值

而简化焊道数

对于焊道数较多、焊接时间较长的接头的过程应力可能具有更大的影响.

Abstract

Facing a huge memory space and long calculating period in finite element calculation for large thick-wall welded structure

three predictor models based on software ANSYS with simplification of bead number

moving heat source

and both of them respectively are presented. Under the three simplifications

the residual stress and the process stress of the welded cylinder with angle-inserting elbow and thickness of 125 mm are evaluated

and as a result

the similarities and differences for the welding stress are obtained. It shows that the residual stress in simplified bead model has greater error than that by simplified moving heat source model in direction of bead filled

and the stress in simplified moving heat source model has greater error than that by simplified bead model in the same bead plane. The process peak stress increases in case of simplified moving heat source model

and the process stress of the joint with many beads or a very long welding time is affected more significantly by the simplified bead model.

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references

TENG T L, CHANG P H. A study of residual stresses in multi-pass girth-butt welded pipes [J]. Journal of Pressure Vessels and Piping, 1997, 74(1): 59-70.

DENG Dean, MURAKAWA H, LIANG Wei. Numerical and experimental investigations on welding residual stress in multi-pass butt-welded austenitic stainless steel pipe [J]. Computational Materials Science,2008,42(2): 234-244.

DENG Dean, MURAKAWA H. Finite element analysis of temperature field, microstructure and residual stress in multi-pass butt-welded 2.25Cr-1Mo steel pipes [J]. Computational Materials Science, 2008, 43(4): 681-695.

WEN S W, HILTON P, FARRUGIA D J. Finite element modeling of a submerged arc welding process [J]. Journal of Materials Processing Technology, 2001, 119(1/3): 203-209.

TSAI C L, PARK S C, CHENG W T. Welding distortion of a thin-plate panel structure [J]. Welding Journal, 1999, 78(5): 157-165.

CAMILLERI D, MOLLICONE P, GRAY T F. Alternative simulation techniques for distortion of thin plate due to fillet-welded stiffeners [J]. Modelling and Simulation in Materials Science and Engineering, 2006, 14(8): 1307-1327.

ZHANG Linjie, ZHANG Jianxun, SERIZAWA H, et al. Parametric studies of welding distortion in fillet welded structure based on FEA using iterative substructure method [J]. Science and Technology of Welding Joining, 2007, 12(8): 703-707.

陈建波, 罗宇, 龙哲. 大型复杂结构焊接变形热弹塑性有限元分析 [J]. 焊接学报, 2008, 29(4): 69-72.

CHEN Jianbo, LUO Yu, LONG Zhe. Analysis on welding distortion of large complicated structure by thermal elastic-plastic finite element method [J]. Transactions of the China Welding Institution, 2008, 29(4): 69-72.

SATTARI-FAR I, JAVADI Y. Influence of welding sequence on welding distortions in pipes [J]. International Journal of Pressure Vessels and Piping, 2008, 85(4): 265-274.

LEGGATT R H. Residual stresses in welded structures [J]. International Journal of Pressure Vessels and Piping, 2008, 85(3): 144-151.

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