基于NSGA-I的丰字结构焊接顺序自动优化和仿真联合优化方法

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中图分类号：U466；TG441 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250035

A Method for Joint Optimization of Welding Parameters and Simulation Based on NSGA-II

Cui Zhen²， Zhang Lieming¹²， Guo Jiwen¹²， Sun Guodong³，Wang Qianxun 1，2 Tian Yanfang1.2 （1.IntellgenceIntegration&NumericalInnovation（Shandong）TechnologyCoLd.，izhao68O;2.ZejiangFeidiotorso Ltd.，Rizhao 2768oo;3.Shandong Institute of Science and Technology Information，Jinan 276801）

Abstract：Inorder to reduce the influence of temperature field，welding residual stres，human factor，etc.on weldingqualityofstructural welded parts，firstly，athree-dimensional modelofstructural welded partsisestablishedto simulateandanalysewelding temperature field，welding residual stressand welding deformation，subsequently，the influenceofclamping condition，heatsourcepatternandwelding parametersof structural welded partsonwelding deformationandweldingresidualstressisinvestigated，simulationandtestresultsarecompared，thusidentifyingecause of welding deformation and modification method.Finally，welding sequence and welding direction are usedas design variablesfor welding sequenceoptimization with genetic algorithm，in which the least welding deformation sequence is obtained bysimulation with the least welding residual deformation asoptimization objective.On the basis ofoptimizing welding sequence，the clamping position，reversedeformation design methodare simulatedand optimized respectively， therebyobtaining the process design scheme and the optimal forming accuracy with the least welding deformation.

Keywords：Welding deformation，Heat source，Genetic algorithm，Welding sequence，Reverse deformation

1前言

或试验规律，常用方法有：合理设计焊接结构，尽量减少焊缝数量、焊缝长度和截面面积等；预热焊接件；由中间向两侧分段退焊；冷焊法，降低其他在实际操作中，焊接变形控制一般依靠经验部分焊件的温度差异；选择合理的焊接顺序；反变形法；锤击焊缝法。（剩余6770字）