Study of Residual Stress Distribution at Start-Finish Point of Circumferential Welding Studied by 3D-Fem Analysis
Study of Residual Stress Distribution at Start-Finish Point of Circumferential Welding Studied by 3D-Fem Analysis
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DOI：
10.1007/bf03266501
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发表时间：
2005-11
影响因子：
2.1
通讯作者：
M. Mochizuki;J. Katsuyama;R. Higuchi;M. Toyoda
中科院分区：
文献类型：
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作者：
M. Mochizuki;J. Katsuyama;R. Higuchi;M. Toyoda
近年来，低碳奥氏体不锈钢的内芯和/或再循环管的应力腐蚀开裂（SCC）已成为现实。应力腐蚀开裂被认为是发生和发展的焊接区附近，因为拉伸残余应力，由于焊接。本文采用热弹塑性方法对环缝焊接残余应力进行了分析，研究了环缝焊接残余应力在稳态和非稳态焊接区域的分布规律。目标是SUS 316L管道的对接焊接接头。用三维模型计算了残余应力，并对计算结果进行了比较和讨论。
Recently, the stress corrosion cracking (SCC) of internal cores and/or recirculation pipes of low-carbon austenitic stainless steel has become actualised. The SCC is considered to occur and progress near the welding zone because of the tensile residual stress due to welding. In the present work, the thermo-elastic-plastic analysis of the residual stress was performed in order to clarify the distribution of residual stress in the steady and unsteady welding regions by circumferential welding. The target was a butt-welded joint of SUS316L-pipes. The residual stress has been calculated using a three dimensional model and the results have been compared and discussed in detail.