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本文提出了一种新的方法解决多道焊热循环仿真过程中的表面对流和辐射造成的热损失问题。引言焊接接头的耐用性评价包括残余应力和变形。焊接过程中的热循环是仿真焊接残余应力的关键输入量。许多研究者已对弧焊过程热流进行分析、计算和实验。各种分析方法都能合理准确地计算出焊接时的温度分布。对有限厚度钢板使用格林函数和有效热源,并补偿诺埃曼(Neumann)边界条件求近似解析解,是一个非常有效的工具,
In this paper, a new method is proposed to solve the problem of heat loss caused by surface convection and radiation during the simulation of multi-pass welding thermal cycle. Introduction The durability evaluation of welded joints includes residual stress and deformation. Thermal cycling in the welding process is the key input to simulate welding residual stress. Many researchers have analyzed, calculated and experimented the heat flux in the arc welding process. A variety of analytical methods can reasonably accurately calculate the temperature distribution of welding. It is a very effective tool to use the Green’s function and the effective heat source for the limited thickness steel plate and compensate the Neumann boundary conditions for the approximate analytic solution.