Three-dimensional finite element simulation of residual stresses in circumferential welds of steel pipe including pipe diameter effects
Three-dimensional finite element simulation of residual stresses in circumferential welds of steel pipe including pipe diameter effects
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DOI：
10.1016/j.msea.2007.10.011
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发表时间：
2008-07
期刊：
影响因子：
6.4
通讯作者：
C. Lee;K. Chang
中科院分区：
文献类型：
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作者：
C. Lee;K. Chang
在管道环缝焊接中，通常认为采用轴对称模型可以较好地预测残余应力的分布。然而，在一般情况下，轴对称模型不能再现电弧沿着周向焊缝和残余应力的快速变化，可以观察到在重叠区域。此外，它往往高估环焊缝的环向残余应力。因此，三维有限元（FE）模型是必不可少的环焊缝的精确模拟，可以考虑三维效应。对钢管环缝对接焊进行了三维有限元模拟。所使用的热机械模型以及模拟方法进行了详细说明，并对结果进行了讨论。此外，参数研究与内径壁厚比范围从10.0到100.0已被提出调查的影响，管道直径上的残余应力。轴向和环向残余应力绘制所考虑的范围内的管道直径，并讨论的差异。
In circumferential welding of a pipe component, it is often considered that axisymmetric model can provide a reasonable prediction of the residual stress distributions. However, in general, the axisymmetric model cannot reproduce the traveling arc along circumferential welds and rapid change of residual stresses that can be observed in the overlapping region. Moreover, it tends to overestimate the hoop residual stresses in circumferential welds. Therefore, three-dimensional finite element (FE) model is essential for the accurate simulation of circumferential welding which can incorporate the three-dimensional effects. This paper presents the three-dimensional FE simulation of circumferential butt welding of a steel pipe. The thermo-mechanical model used as well as the simulation methodology is detailed, and the results are discussed. In addition, parametric studies with inside radius to wall thickness ratio ranging from 10.0 to 100.0 have been presented to investigate the effects of pipe diameter on residual stresses. Axial and hoop residual stresses are plotted for the considered range of pipe diameters, and the differences are discussed.