Welding residual stresses analysis of aluminum alloy cylinder
The laser welding residual stresses in an aluminum alloy thick-wall cylinder is investigated by means of nonlinear finite element method. The article has simulated the residual stresses distribution of the longitudinal weld. The result shows that the temperature is high and temperature gradients are...
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| Veröffentlicht in: | 中国焊接 2011-12, Vol.20 (4), p.71-74 |
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| creator | 胡敏英 时君伟 吴志生 |
| description | The laser welding residual stresses in an aluminum alloy thick-wall cylinder is investigated by means of nonlinear finite element method. The article has simulated the residual stresses distribution of the longitudinal weld. The result shows that the temperature is high and temperature gradients are large in the very narrow zone under the laser beam. And the axial residual stress shows the alternate tensile stress and compressive stress. Also the axial residual stress is tensile stress along weld line and the stress peak value appears in the middle of the welded seam. What is more, it is symmetric distribution in the distance from the beginning and the last step welding 20 mm. Good agreements are found between calculated results and measured results indicating the validity of the assumptions made for the development of the model. |
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The article has simulated the residual stresses distribution of the longitudinal weld. The result shows that the temperature is high and temperature gradients are large in the very narrow zone under the laser beam. And the axial residual stress shows the alternate tensile stress and compressive stress. Also the axial residual stress is tensile stress along weld line and the stress peak value appears in the middle of the welded seam. What is more, it is symmetric distribution in the distance from the beginning and the last step welding 20 mm. Good agreements are found between calculated results and measured results indicating the validity of the assumptions made for the development of the model.</description><identifier>ISSN: 1004-5341</identifier><language>eng</language><publisher>Mechanical and Electrical Engineering College, Agricultural University of Hebei, Baoding, 071001%School of Material Science and Engineering, Taiyuan University of Science and Technology. 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The result shows that the temperature is high and temperature gradients are large in the very narrow zone under the laser beam. And the axial residual stress shows the alternate tensile stress and compressive stress. Also the axial residual stress is tensile stress along weld line and the stress peak value appears in the middle of the welded seam. What is more, it is symmetric distribution in the distance from the beginning and the last step welding 20 mm. 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The article has simulated the residual stresses distribution of the longitudinal weld. The result shows that the temperature is high and temperature gradients are large in the very narrow zone under the laser beam. And the axial residual stress shows the alternate tensile stress and compressive stress. Also the axial residual stress is tensile stress along weld line and the stress peak value appears in the middle of the welded seam. What is more, it is symmetric distribution in the distance from the beginning and the last step welding 20 mm. Good agreements are found between calculated results and measured results indicating the validity of the assumptions made for the development of the model.</abstract><pub>Mechanical and Electrical Engineering College, Agricultural University of Hebei, Baoding, 071001%School of Material Science and Engineering, Taiyuan University of Science and Technology. Taiyuan, 030024</pub><tpages>4</tpages></addata></record> |
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| identifier | ISSN: 1004-5341 |
| ispartof | 中国焊接, 2011-12, Vol.20 (4), p.71-74 |
| issn | 1004-5341 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | 厚壁圆筒 残余应力分析 温度梯度 激光焊接 纵向焊缝 缸体 铝合金 非线性有限元方法 |
| title | Welding residual stresses analysis of aluminum alloy cylinder |
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