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考虑计算机模拟焊接应力和变形的承插焊管强度数值预测

Numerical Prediction of Strength of Socket Welded Pipes Taking into Account Computer Simulated Welding Stresses and Deformations.

作者信息

Domański Tomasz, Piekarska Wiesława, Saternus Zbigniew, Kubiak Marcin, Stano Sebastian

机构信息

Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Dabrowskiego 69, 42-201 Czestochowa, Poland.

Faculty of Architecture, University of Technology, Civil Engineering and Applied Arts, Rolna 43, 40-555 Katowice, Poland.

出版信息

Materials (Basel). 2022 Apr 30;15(9):3243. doi: 10.3390/ma15093243.

DOI:10.3390/ma15093243
PMID:35591576
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9101909/
Abstract

The paper presents a numerical model based on the finite element method (FEM) to predict deformations and residual stresses in socket welding of different diameter stainless steel pipes made of X5CrNi18-10 steel. The next part of the paper concerns the determination of strength properties of a welded joint in terms of a shear test. A thermo-elastic-plastic numerical model is developed using Abaqus FEA software in order to determine the thermal and mechanical phenomena of the welded joint. This approach requires the implementation of moveable heat source power intensity distribution based on circumferentially moving Goldak's heat source model. This model is implemented in the additional DFLUX subroutine, written in Fortran programming language. The correctness of the assumed model of thermal phenomena is confirmed by examinations of the shape and size of the melted zone. The strength of the welded joint subjected to shear is verified by performing a compression test of welded pipes as well as computer simulations with validation of the computational model using the Dantec 3D image correlation system.

摘要

本文提出了一种基于有限元法（FEM）的数值模型，用于预测由X5CrNi18 - 10钢制成的不同直径不锈钢管承插焊接中的变形和残余应力。本文的下一部分涉及通过剪切试验确定焊接接头的强度性能。为了确定焊接接头的热和力学现象，使用Abaqus有限元分析软件开发了一个热弹塑性数值模型。这种方法需要基于圆周移动的Goldak热源模型实现移动热源功率强度分布。该模型在使用Fortran编程语言编写的附加DFLUX子程序中实现。通过对熔化区形状和尺寸的检查，证实了所假设的热现象模型的正确性。通过对焊接管进行压缩试验以及使用Dantec 3D图像相关系统对计算模型进行验证的计算机模拟，验证了承受剪切力的焊接接头的强度。

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Experimental and Numerical Investigations on the Thermomechanical Behavior of 304 Stainless Steel/Q345R Composite Plate Weld Joint.
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Materials (Basel). 2019 Oct 24;12(21):3489. doi: 10.3390/ma12213489.