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Development of Welding Deformation Control Method for Hull Structure of Ro/Ro Passenger Ferry

机译：RO / RO乘客渡轮船体结构焊接变形控制方法的研制

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摘要

Welding deformation of hull structure in the shipbuilding industry is inevitable at each assembly stage. The geometric inaccuracy of each member at the assembly stage precludes the introduction of automation and mechanization and produces the addditional man-hours for the adjusting work at the following assembly stage. To overcome this problem, a distortion control method should be applied to reduce the welding deformation at each assembly stage. For this purpose, it is neccesary to develop an accurate prediction method which can explicitly account for the influence of various factors on the welding deformation. The validity of the prediction method must be also clarified through experiments. For the purpose of reducing the weld-induced residual deformation, this paper proposes the plastic counter-deforming method using the line heating as the optimum distortion control method. The validity of this method has been substantiated by a number of numerical simulations and actual measurements.
机译：船舶建筑业中船体结构的焊接变形在每个装配阶段都是不可避免的。每个成员在装配阶段的几何不准确性排除了自动化和机械化的引入，并在下列组装阶段产生调整工作的附加工时。为了克服这个问题，应该应用失真控制方法以减少每个组装阶段的焊接变形。为此目的，它是制定精确的预测方法，可以明确地解释各种因素对焊接变形的影响。还必须通过实验阐明预测方法的有效性。为了降低焊接诱导的残余变形，本文采用了利用线加热作为最佳变形控制方法的塑料逆变形方法。该方法的有效性已经通过许多数值模拟和实际测量来证实。

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