基于OptiStruct的轻卡车架第二横梁强度优化

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中图分类号：U469 收稿日期：2025-12-26

DOI: 10.19999/j.cnki.1004-0226.2026.02.006

Strength Optimization of the Second Beam in a Light Truck Frame Based on OptiStruct

Ren Chunlin Xiong Xianfeng Anhui Jianghuai Automobile Co.,Ltd.,Hefei 230601,China

Abstract:Inresponsetothefractureissueofthesecondbeamobservedduringthedurabilityroadreliabilitytestofacertainlight truckmodel,finiteeementsiulatioalysisdtizationoftsstregthrecoducted.Fstlytheultyompotsin spectedtodeterminewhetheritsqualitycharacteristicsmetthedesignrequirements.Simultaneouslystress testingwasperformedon thevehiclemodeltofcilitatesulatio-ttoelatioSecondlyrengthsimulatiaalysisodeloftecleasltsd onOptiStructtosmulatetheworkingconditionsofthefullvehicledurabilityroadreliabilitytestandanalyzethetressdistributionon thesecondbeam.Thesimulationresultsshowedthatundertorsionconditions，stressconcentrationoccuredintheweldingzonebetwenthesecondbeamanditsonnectingplate，whichasconsistentwiththestresstestresults.Consequentlyeveralfeasiblestruc turaloptimizationschemeswereproposedandcomparedtroughstrengthsimulationanalysis.Ultimately，consideringfactorssuchas strength,aufcurablitydostalutioseletedfoodblifainditsgtht ments.

Keywords:Frame;Second beam;OptiStruct;Strength Optimization

1前言

车架是汽车的基础部件，汽车的动力总成、底盘的各总成都相对车架而安装，车身或车厢等更是直接装在车架之上，故车架又是承载的基体[1]。（剩余5231字）