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首页> 外文期刊>Journal of Materials Engineering and Performance >Investigating Welding Distortion of Thin-Plate Stiffened Panel Steel Structures by Means of Thermal Elastic Plastic Finite Element Method
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Investigating Welding Distortion of Thin-Plate Stiffened Panel Steel Structures by Means of Thermal Elastic Plastic Finite Element Method

机译：通过热弹性塑料有限元法调查薄板加强面板钢结构的焊接变形

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In the past decades, thin-plate weldments have been increasingly used in various engineering structures to meet the requirements of lightweight. However, deformation induced by welding process has a negative effect on assembly accuracy and structural integrity. Therefore, it is critical to predict welding deformation and then to control or reduce the total deformation. Because the thermal elastic plastic FEM has the advantage of high computational accuracy, an attempt was made to predict the welding deformation of a large-scale thin-plate welded structure in this study. Based on the commercial software MSC. Marc, a thermal elastic plastic FEM with the consideration of material nonlinearity, geometrical nonlinearity, and boundary nonlinearity was developed to simulate the welding deformation of large-scale welded structures. The effectiveness of the developed computational approach was verified by the experimental measurements. Moreover, the mechanism of buckling distortion in a large-scale stiffened panel structure was investigated based on the simulated results. In addition, the influences of heat input, welding procedures, and constraint condition on welding deformation were also examined numerically.
机译：在过去的几十年里，薄板焊接件越来越多地被用于各种工程结构中，以满足轻量化的要求。然而，焊接过程中产生的变形会对装配精度和结构完整性产生负面影响。因此，预测焊接变形，进而控制或减少总变形是至关重要的。由于热弹塑性有限元具有计算精度高的优点，本研究尝试预测大型薄板焊接结构的焊接变形。基于商业软件MSC。Marc是一种考虑材料非线性、几何非线性和边界非线性的热弹塑性有限元方法，用于模拟大型焊接结构的焊接变形。实验测量结果验证了该方法的有效性。在此基础上，研究了大型加筋板结构的屈曲变形机理。此外，还研究了热输入、焊接工艺和约束条件对焊接变形的影响。

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