采用固有应变法预测超薄板的焊接变形

发布时间：2018-04-11 23:20

本文选题：超薄板 + 焊缝长度　；参考：《焊接学报》2017年03期

【摘要】：文中以汽车制造中常用的1 mm厚的薄板为分析对象,采用热-弹-塑性有限元分析了焊缝长度对固有变形分布特征的影响,通过比较热-弹-塑性有限元法及固有应变法预测的变形结果,定量分析了焊缝长度对固有应变法预测超薄板焊接变形时计算精度的影响.结果表明,当焊缝长度达到一定临界长度时,固有应变法可适用于板厚为1 mm左右超薄板焊接接头的焊接变形预测.
[Abstract]:In this paper, the influence of weld length on the distribution of inherent deformation is analyzed by thermo-elastic-plastic finite element method, which is usually used in automobile manufacturing, which is 1 mm thick thin plate.By comparing the deformation results predicted by the thermo-elastic-plastic finite element method and the inherent strain method, the influence of weld length on the calculation accuracy of the inherent strain method for predicting the welding deformation of ultra-thin plate is quantitatively analyzed.The results show that when the weld length reaches a certain critical length, the inherent strain method can be used to predict the welding deformation of ultra-thin plate welded joints with a plate thickness of about 1 mm.
【作者单位】：重庆交通大学机电与车辆工程学院;重庆大学材料科学与工程学院;
【基金】：国家自然科学基金资助项目(51375518) 教育部留学回国人员科研启动基金重庆市教委自然科学基金资助项目(KJ130401)
【分类号】：TG404

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