考虑焊接顺序的电力机车枕梁焊接变形预测

发布时间：2018-03-24 09:42

本文选题：枕梁　切入点：焊接顺序　出处：《焊接学报》2015年12期

【摘要】：根据枕梁实际建造工艺,利用基于固有应变理论为基础的焊接变形分析系统软件Weld-Sta对电力机车枕梁的焊接变形进行计算.首先采用分步装焊模拟法,单独建立每一步的有限元模型,并设置相对应的焊缝,然后对每一步的焊接变形进行单独计算,再将各步结果进行叠加得到最终变形结果.然后采用整体同时焊接模拟法,一次性计算整个模型的所有焊缝同时焊接后的变形,最后将两种方法的最终变形结果与实测数据进行比较.结果表明,考虑分步焊接的方法更接近实测数据,从而验证了该方法的可靠性,为枕梁建造工艺的设计提供了理论指导.
[Abstract]:According to the actual construction technology of the pillow beam, the welding deformation analysis system software Weld-Sta based on the inherent strain theory is used to calculate the welding deformation of the electric locomotive pillow beam. The finite element model of each step is established separately, and the corresponding weld seam is set up, then the welding deformation of each step is calculated separately, and the final deformation result is obtained by superposing the results of each step. The deformation of all welds of the whole model is calculated at one time. Finally, the final deformation results of the two methods are compared with the measured data. The results show that the method considering step welding is closer to the measured data. The reliability of the method is verified and theoretical guidance is provided for the design of pillow beam construction technology.
【作者单位】：上海交通大学高新船舶与深海开发装备协同创新中心;南车株洲电力机车有限公司;
【分类号】：TG404

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