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首页> 外文期刊>Mechanics & Industry >Fast 3D simulation of a single-pass steel girth weld
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Fast 3D simulation of a single-pass steel girth weld

机译：单道钢环焊缝的快速3D模拟

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摘要

The prediction of welding residual stresses requires accurate account to be taken of the couplings between heat transfer, metallurgy and stresses-strains in the heat affected zone. To begin with, simulations of residual stresses for welding processes were performed at the beginning of the 1970s. Since then, calculations have been compared and validated with experimental measurements, the major problem remaining is the calculation time. Despite the technological evolution of computers, a 3D calculation can last several days. To avoid this difficulty, a 3D simplified approach is proposed in this article. It consists of decreasing the computation time for the current zone of the welds. To show the relevance of such an approach, the methodology developed is presented through the application of a single-pass steel girth weld. For this application, the computing time can be reduced by more than 67% compared to a standard "step by step" simulation.
机译：焊接残余应力的预测需要准确考虑热影响区中的传热，冶金和应力应变之间的耦合。首先，在1970年代初对焊接过程的残余应力进行了模拟。从那以后，计算已经与实验测量进行了比较和验证，剩下的主要问题是计算时间。尽管计算机技术日新月异，但3D计算仍可以持续数天。为避免此困难，本文提出了一种3D简化方法。它包括减少焊接当前区域的计算时间。为了说明这种方法的相关性，通过单道次钢制环缝焊缝的应用展示了开发的方法。对于此应用程序，与标准的“逐步”模拟相比，计算时间可减少67％以上。

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