Abstract—The article covers the challenges of forecasting the appearance of a defective zone at the end of a weld joint and determining its size based on the simulation results. The research has been carried out to determine the influence of the heat reflection from the edges on basic characteristics of the joint (geometric dimensions of the weld, mechanical properties of the joint). A mathematical model of heat distribution is presented with regard to the influence of workpiece edges and based on it the regression equations are established to determine the dimensions change of the weld, which made it possible to forecast the dimensions of the defective zone. An algorithm for selecting welding modes, taking into account the influence of heat reflection, based on a mathematical model, is presented, and its practical implementation is examined.

中文翻译：

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基于热过程建模的预测焊接接头末端缺陷形成方法的开发

摘要-本文涵盖了预测焊接接头末端缺陷区域的外观并根据模拟结果确定其大小的挑战。已经进行了研究以确定边缘的热反射对接缝的基本特性（焊缝的几何尺寸，接缝的机械性能）的影响。给出了关于工件边缘影响的热分布数学模型，并基于该模型建立了回归方程以确定焊缝的尺寸变化，从而可以预测缺陷区域的尺寸。提出了一种基于数学模型的考虑热反射影响的焊接方式选择算法，并对其实际实现进行了研究。