基于NSGA-I的豐字結(jié)構(gòu)焊接順序自動(dòng)優(yōu)化和仿真聯(lián)合優(yōu)化方法

打開(kāi)文本圖片集

中圖分類號(hào)：U466；TG441 文獻(xiàn)標(biāo)志碼：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

或試驗(yàn)規(guī)律，常用方法有：合理設(shè)計(jì)焊接結(jié)構(gòu)，盡量減少焊縫數(shù)量、焊縫長(zhǎng)度和截面面積等；預(yù)熱焊接件；由中間向兩側(cè)分段退焊；冷焊法，降低其他在實(shí)際操作中，焊接變形控制一般依靠經(jīng)驗(yàn)部分焊件的溫度差異；選擇合理的焊接順序；反變形法；錘擊焊縫法。（剩余6770字）