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首页> 外文期刊>The Journal of Strain Analysis for Engineering Design >Finite element modelling strategies of weld repair in pre-stressed thin components
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Finite element modelling strategies of weld repair in pre-stressed thin components

机译：预应力薄构件焊接修复的有限元建模策略

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摘要

A total of two computational procedures have been developed in the commercial finite element software codes Sysweld and ABAQUS to analyse and predict the residual stress state after the repair of small weld defects in thin structural components. The numerical models allow the effects of the repair to be studied when a pre-existing residual stress field is present in the fabricated part and cannot be relieved by a thermal treatment. In this work, the modelling strategies are presented and tested by simulating a repair of longitudinal welds in thin sheets of Inconel 718. Although the numerical strategies in the two codes are intrinsically different, the results show a significant agreement, predicting a notable effect imposed by the initial residual stress.
机译：在商业有限元软件代码Sysweld和ABAQUS中，总共开发了两种计算程序，以分析和预测修复薄结构部件中的小焊缝缺陷后的残余应力状态。数值模型允许在制造的零件中存在预先存在的残余应力场且无法通过热处理消除残余应力场的情况下研究修复效果。在这项工作中，通过模拟Inconel 718薄片中纵向焊缝的修复，提出并测试了建模策略。尽管两个代码中的数值策略本质上是不同的，但结果显示出显着的一致性，预言了施加的显着效果初始残余应力。

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