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首页> 外文期刊>Science and Technology of Welding & Joining >Solution of inverse heat conduction problem for determining heat input, weld shape, and grain structure during laser welding
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Solution of inverse heat conduction problem for determining heat input, weld shape, and grain structure during laser welding

机译：用于确定激光焊接过程中的热量输入，焊缝形状和晶粒结构的导热逆问题的解决方案

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摘要

The technique of solving the inverse heat conduction problem to determine the steady state welding conditions corresponding to observable or desired weld features is outlined. The objective function includes calculated and experimental values of the temperature related functions, constraints, and regularisation of unknown parameters. The algorithm used to determine the minimum of the objective function is presented. As an example, the temperature field and its corresponding grain structure have been calculated taking into consideration the latent heat and fluid flow in the laser welding of two aluminium alloys. The weld width and texture orientation have been used as the temperature related functions. The results of the simulations are directly compared with the experimental evidence.
机译：概述了解决逆导热问题以确定与可观察或期望的焊接特征相对应的稳态焊接条件的技术。目标函数包括温度相关函数的计算值和实验值，约束条件和未知参数的正则化。介绍了用于确定目标函数最小值的算法。例如，已经计算了温度场及其相应的晶粒结构，其中考虑了两种铝合金的激光焊接中的潜热和流体流动。焊缝宽度和织构方向已用作与温度相关的功能。仿真结果直接与实验证据进行比较。

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