| 预拉伸条件下铝合金筒体焊接残余应力和变形的数值模拟 |
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| 引用本文： | 李敬勇,王虎,刘志鹏,陆亚明.预拉伸条件下铝合金筒体焊接残余应力和变形的数值模拟[J].材料开发与应用,2008,23(5). |
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| 作者姓名： | 李敬勇 王虎 刘志鹏 陆亚明 |
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| 作者单位： | 江苏科技大学江苏省先进焊接技术重点实验室,江苏,镇江,212003;江苏科技大学江苏省先进焊接技术重点实验室,江苏,镇江,212003;江苏科技大学江苏省先进焊接技术重点实验室,江苏,镇江,212003;江苏科技大学江苏省先进焊接技术重点实验室,江苏,镇江,212003 |
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| 摘 要： | 利用ANSYS有限元分析软件,分别对施加及不施加拉伸应力的铝合金筒体环焊缝对接焊接过程中的应力场及变形进行了模拟分析。计算结果表明:预拉伸焊接可以有效减小铝合金薄板的焊后残余应力和变形。当预拉伸应力为材料屈服强度的90%时,焊缝残余应力较无预拉伸的降低近52%,同时,铝合金筒体焊接残余变形也大幅减小。
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| 关 键 词： | 铝合金 简体 预拉伸 残余应力 残余变形 |
Numerical Simulation of Welding Residual Stresses and Distortions of Aluminum Alloy Cylinder under Pre-tension Stresses |
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| LI Jing-yong,WANG Hu,LIU Zhi-peng,LU Ya-ming.Numerical Simulation of Welding Residual Stresses and Distortions of Aluminum Alloy Cylinder under Pre-tension Stresses[J].Development and Application of Materials,2008,23(5). |
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| Authors: | LI Jing-yong WANG Hu LIU Zhi-peng LU Ya-ming |
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| Abstract: | The welding stress and distortion,which appeared during the butt welding of girth joint of aluminum alloy cylinder under and without pre-tension stress,are numerically simulated by using ANSYS finite element analysis software.The calculation results show that pre-tension welding can reduce the welding residual stresses and deformations effectively.When the pre-tension stress =90%Rp0.2,the residual stress at weld is about 52% lower than that without pre-tension.Meanwhile,the welding deformations of aluminum alloy barrel are reduced greatly under pre-tension. |
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| Keywords: | Aluminum alloy Cylinder Pre-tension Residual welding stress Welding distortion |
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