预览加载中，请您耐心等待几秒...

基于响应面法的碎石道床离散元模型参数研究（英文）.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

基于响应面法的碎石道床离散元模型参数研究（英文） Title:ParameterStudyofDiscreteElementModelforGravelBedbasedonResponseSurfaceMethodology Abstract: Inthispaper,wepresentaparameterstudyofadiscreteelementmodelforgravelbedusingtheresponsesurfacemethodology(RSM).Thediscreteelementmodeliswidelyusedforstudyingthebehaviorofgranularmaterialsundervariousloadingconditions.However,themodelrequiresvariousinputparameters,anddeterminingtheoptimalvaluesfortheseparameterscanbeachallengingtask.TheRSMisastatisticaltechniquethatenablestheoptimizationofinputparametersbyexploringtheresponseofthesystemtodifferentparametercombinations.Inthisstudy,weaimtodeterminetheoptimalvaluesofthediscreteelementmodelparametersformodelingagravelbed.Theresultsofthisstudywillenhanceourunderstandingofthebehaviorofgravelbedandprovidevaluableinsightsforengineersandresearchersworkinginthefieldofgeotechnicalengineering. 1.Introduction Gravelbedsarecommonlyusedincivilengineeringprojects,suchasroadconstructionandrailways,asastablefoundationmaterial.Understandingthebehaviorofgravelbedsunderdifferentloadingconditionsiscrucialforensuringthelong-termstabilityandsafetyofinfrastructure.Thediscreteelementmethod(DEM)hasemergedasapowerfultoolforstudyinggranularmaterialbehaviorattheparticlescale.IntheDEM,eachindividualparticleismodeledandtheirinteractionsaregovernedbycontactlaws.However,theaccuracyoftheDEMsimulationsheavilyreliesontheproperselectionofinputparameters.Theresponsesurfacemethodology(RSM)providesasystematicapproachtodeterminetheoptimalvaluesoftheseparametersbyutilizingastatisticalresponsesurfacemodel. 2.Methodology 2.1DiscreteElementModel Thediscreteelementmodelrepresentsgravelbedasacollectionofindividualparticles.ThemotionandinteractionofeachparticlearegovernedbyNewton'slawsofmotionandcontactlaws.Theparticlesareconsideredasrigidbodies,andthecontactproperties,suchasfrictionandstiffness,aredefined.TheDEMprovidesacomprehensiveunderstandingofthemechanicalbehaviorofgranularmaterials,includingparticlerearrangement,compaction,andfailure. 2.