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Numerical analysis and experimental investigation of welding residual stresses and distortions in a T-joint fillet weld
Highlights A numerical/experimental study of welding stresses and distortions is conducted. A shell/3D technique for welding simulation of T-joint fillet weld is investigated. Size of 3D zone in shell/3D model does not influence temperature field distribution. The minimal size of the 3D zone must be chosen according to the stress criterion. For T-joint welded plates 3D zone size must be minimum 3 times the wall thickness size.
Abstract This paper presents a numerical and experimental study of residual stresses and distortions induced by the T-joint welding of two plates. Within the framework of numerical investigations, a thermo-mechanical finite element analysis is performed by using a shell/three-dimensional modeling technique to improve both the computational efficiency and the accuracy. The influence of the choice of the local 3D model size on the temperature, residual stress, and displacement distributions is investigated. A minimal 3D zone size that had both appropriate convergence of the solution and accuracy is defined. To validate the numerical model, a series of experiments using a fully automated welding process are conducted. A thermographic camera and an optical measurement system are used to measure the temperature and displacement distributions.
Numerical analysis and experimental investigation of welding residual stresses and distortions in a T-joint fillet weld
Highlights A numerical/experimental study of welding stresses and distortions is conducted. A shell/3D technique for welding simulation of T-joint fillet weld is investigated. Size of 3D zone in shell/3D model does not influence temperature field distribution. The minimal size of the 3D zone must be chosen according to the stress criterion. For T-joint welded plates 3D zone size must be minimum 3 times the wall thickness size.
Abstract This paper presents a numerical and experimental study of residual stresses and distortions induced by the T-joint welding of two plates. Within the framework of numerical investigations, a thermo-mechanical finite element analysis is performed by using a shell/three-dimensional modeling technique to improve both the computational efficiency and the accuracy. The influence of the choice of the local 3D model size on the temperature, residual stress, and displacement distributions is investigated. A minimal 3D zone size that had both appropriate convergence of the solution and accuracy is defined. To validate the numerical model, a series of experiments using a fully automated welding process are conducted. A thermographic camera and an optical measurement system are used to measure the temperature and displacement distributions.
Numerical analysis and experimental investigation of welding residual stresses and distortions in a T-joint fillet weld
Perić, Mato (author) / Tonković, Zdenko (author) / Rodić, Alan (author) / Surjak, Martin (author) / Garašić, Ivica (author) / Boras, Ivanka (author) / Švaić, Srećko (author)
2013-08-04
12 pages
Article (Journal)
Electronic Resource
English
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