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Case-Study Inverse Thermal Analyses of Al2139 and Al2198 Electron Beam Welds

机译:Al2139和Al2198电子束焊缝的案例研究逆热分析

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摘要

Case study inverse thermal analyses of Al2139 and Al2198 electron beam welds are presented. These analyses represent a continuation of previous studies using laser beam welds, but provide accessibility to different regions of the parameter space for temperature histories than achievable using laser beams. For these analyses, a numerical methodology is employed, which is in terms of analytic functions for inverse thermal analysis of steady-state energy deposition in plate structures. The results of the case studies presented provide parametric representations of weld temperature histories, which can be adopted as input data to various types of computational procedures, such as those for prediction of solid-state phase transformations and their associated software implementations. In addition, these weld temperature histories can be used for construction of numerical basis functions that can be adopted for inverse analysis of welds corresponding to other process parameters or welding processes process conditions of which are within similar regimes.
机译:介绍了Al2139和Al2198电子束焊缝的反向热分析案例研究。这些分析代表了以前使用激光束焊缝进行研究的延续,但是与使用激光束可达到的温度历史相比,可提供对参数空间不同区域的可访问性。对于这些分析,采用数值方法,即根据解析函数对板结构中的稳态能量沉积进行逆热分析。提出的案例研究结果提供了焊接温度历史记录的参数表示形式,可以将其用作各种类型的计算程序(例如用于预测固态相变及其相关软件实现的那些程序)的输入数据。此外,这些焊接温度历史可用于构造数字基函数,该数字基函数可用于与其他工艺参数相对应的焊缝的反分析或在相似范围内的焊接工艺过程条件。

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