题目：基于Deform3D扭转试样的数值模拟摘要本论文主要是围绕扭转数值模拟展开，使用DEFORM-3D程序，对旋转过程进行了有限的模拟和研究。不同旋转速度对数值模拟结果的影响。首先对扭转数值模拟所用材料Q235进行了分析，查询相关文献得到了其本构方程和弹塑性相关参数，导入DEFORM-3D软件建立了Q235材料，丰富了软件材料库。其次建立了扭转仿真有限元模型，熟悉了DEFORM-3D有限元模拟软件的基本操作。最后，完成了扭转数值模拟，探究了不同旋转速度对模拟结果的影响。扭转中的旋转速度很大程度力影响着结果中速度流场、等效应力场、扭矩等方面。随旋转速度的增加，最大应力也随着增大；扭矩随着转速的增加而增加，而且会跟随着旋转速度的不断增强，其材料流动速度也随着增大。关键词：Q235钢;DEFORM-3D;数值模拟；扭转ABSTRACTThisthesismainlyfocusesonthetorsionnumericalsimulation.TheDEFORM-3Dsoftwareisusedtosimulatethetorsionprocess,andtheeffectsofdifferentrotationspeedsonthenumericalsimulationresultsareexplored.Firstly,thematerialQ235usedintorsionalnumericalsimulationwasanalyzed.Theconstitutiveequationsandelastoplasticrelatedparameterswereobtainedbyqueryingtherelevantliterature.TheQ235materialwasestablishedbyDEFORM-3Dsoftware,whichenrichedthesoftwaremateriallibrary.Secondly,thetorsionsimulationfiniteelementmodelisestablished,andthebasicoperationofDEFORM-3Dfiniteelementsimulationsoftwareisfamiliar.Finally,thetorsionnumericalsimulationwascompletedandtheeffectsofdifferentrotationspeedsonthesimulationresultswereexplored.Therotationalspeedinthetorsiongreatlyaffectsthevelocityflowfield,equivalentstressfield,torque,etc.intheresult.Withtheincreaseoftherotationalspeed,themaximumstressalsoincreases;astherotationalspeedincreases,thetorquealsoincreases;astherotationalspeedincreases,thematerialflowvelocityalsoincreases.Keywords:Q235steel;DEFORM-3D;numericalsimulation;torsion目录摘要..................................................................................................................................................3ABSTRACT..........................................................................................................................................4第一章引言....................................................................................................................................61.1课题背景............................................................................................................................61.2扭转概述............................................................................................................................61.3扭转数值模拟国内外研究现状........................................................................................7第二章扭转有限元法.......................................................................................................................92.1引言....................................................................................................................................92.2DEFORM-3D软件简介........................................................................................................92.3有限元分析的实施步骤....................................................................................................92.4刚塑性有限元法.............................................................................................................102.5Q235扭转有限元数值模拟.......................................................................................
VIP
