磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文.docx

磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文.docx

《磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文.docx》由会员分享，可在线阅读，更多相关《磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文.docx（8页珍藏版）》请在冰豆网上搜索。

磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文

磨料流加工假塑性流体FLUENT软件数值模拟光整加工论文

基于有限元方法的磨料流加工数值模拟研究

【摘要】磨料流加工技术,又称挤压珩磨,它主要是在一定压力的作

用下,强迫承载有磨粒的粘弹性高分子载体流过被加工零件的表面,

使其内部包含的磨粒在被加工零件的表面产生滑动作用,进而利用磨

粒的刮削作用来去除工件表面微观不平材料的一种工艺方法。

应用磨

料流加工技术能很好的对较复杂的表面和型腔以及工件较隐蔽的部

位,如微孔、窄缝、交叉孔等进行抛光、去毛刺等加工,而且加工效率

高,加工质量好,可加工的材料范围广。

因此该项技术已经被人们广泛

应用到各种行业领域中。

但是,由于影响其加工效果的因素较多,对其

加工机理的研究变得非常困难。

目前对磨料流加工技术的研究还主要

依靠实验手段来完成。

要建立和完善磨料流加工机理理论和弄清不同

因素对磨料流加工效果的影响等问题,必须通过大量实验,然后在实

验数据的基础上进行总结和对比,这就延长了研究周期,而且实验有

时还受客观条件的限制缺乏可操作性。

然而近年来由于流体动力学及

相关数值模拟软件的发展,使得人们在计算机上就可以实现对各种流

体流动的分析,而且因其不受物理和实验条件的限制,所以现在人们

更多的来借助于计算机完成对流体流动分析,不仅省钱省时,而且其

可视化界面,可以使得对其分析结果的显示更加直...更多还原

【Abstract】Abrasiveflowmachining（AFM）isanontraditionalfinishingmethod,whichisalsocalledextrusionhoning.Themachiningprincipleofthetechnologymainlyisthatandperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4）forspringhangers（includedsimplespring,hangersandconstantsupporthangers）itshouldalsoberecognizedassettingandlockingofloads.5）checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5）aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust（torque）limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness（mm）2-34-67-10weldformnoslopemouthweldstrengtheningheighth（mm）1-1.51.5-2weldwidthb（mm）5-67-6hasslopemouthweldstrengtheningheighth（mm）1.5-22weldwidthb（mm）coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness（mm）2--33--45--6weldformweldstrengtheningheighth（mm）1-1.51.5-22-2.5widthb（mm）

viscoelastichighpolymercarryingabrasiveparticlesisforcedtoflowtheworkpiecesurfaceatcertainpressure,andduringthisprocesstheabrasiveparticlescreaterelativeslippingwithworkpiecesurfaceandproducescrapingactionontheworkpiecetoremovemicroscopicunevenroughmaterial.AFMisparticularlysuitabletopoli...更多还原

【关键词】磨料流加工;假塑性流体;FLUENT软件;数值模拟;

光整加工;

【Keywords】abrasiveflowmachining;pseudoplasticfluid;

FLUENTsoftware;numericalsimulation;finishing;

摘要3-6

ABSTRACT6-9

第一章绪论12-24

1.1引言12

1.2磨料流加工技术概述12-17

1.2.1磨料流加工原理13-14

1.2.2磨料流加工方法的技术组成14-15

1.2.3磨料流加工的特点15-16

1.2.4磨料流加工效果的影响因素16-17

1.3文献综述17-22

1.3.1磨料流加工的应用研究17-19

1.3.2磨料流加工机理与影响因素的研究19-22

andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4）forspringhangers（includedsimplespring,hangersandconstantsupporthangers）itshouldalsoberecognizedassettingandlockingofloads.5）checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5）aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust（torque）limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness（mm）2-34-67-10weldformnoslopemouthweldstrengtheningheighth（mm）1-1.51.5-2weldwidthb（mm）5-67-6hasslopemouthweldstrengtheningheighth（mm）1.5-22weldwidthb（mm）coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness（mm）2--33--45--6weldformweldstrengtheningheighth（mm）1-1.51.5-22-2.5widthb（mm）

1.4选题的目的和意义22

1.5本课题主要的研究工作22-24

第二章计算流体动力学基础与FLUENT软件简介24-36

2.1计算流体动力学基础24-27

2.1.1计算流体动力学概述24

2.1.2计算流体动力学数值计算方法概述24-26

2.1.3计算流体动力学的特点26

2.1.4计算流体动力学的应用领域26-27

2.2计算流体动力学的控制方程27-29

2.2.1质量守恒方程27

2.2.2动量守恒方程27-28

2.2.3能量守恒方程28-29

2.3计算流体动力学的求解过程29-30

2.4FLUENT软件介绍30-36

2.4.1FLUENT软件概述30

2.4.2FLUENT软件的结构组成30-31

2.4.3FLUENT软件求解问题的步骤31-32

2.4.4湍流模型32-36

第三章磨料流加工技术理论基础36-46

3.1流体磨料的流变性质36-38

3.2流体磨料在圆形孔道中的流动形态分析38-46

3.2.1流体磨料在圆形孔道中的流动特点38-40andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4）forspringhangers（includedsimplespring,hangersandconstantsupporthangers）itshouldalsoberecognizedassettingandlockingofloads.5）checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5）aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust（torque）limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness（mm）2-34-67-10weldformnoslopemouthweldstrengtheningheighth（mm）1-1.51.5-2weldwidthb（mm）5-67-6hasslopemouthweldstrengtheningheighth（mm）1.5-22weldwidthb（mm）coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness（mm）2--33--45--6weldformweldstrengtheningheighth（mm）1-1.51.5-22-2.5widthb（mm）

3.2.2流体磨料在圆形孔道内全展流区的流动方程40-46第四章基于有限元方法的磨料流加工数值模拟的研究46-58

4.1磨料流加工的数值模拟46-49

4.1.1有限元模型的建立46-47

4.1.2边界条件设置47-48

4.1.3物性参数设置48

4.1.4流动模型的选择及求解器的相关设置48-49

4.2模拟结果与分析49-53

4.2.1一定工作压力下的模拟结果与分析49-51

4.2.2一定流动速度下的模拟结果与分析51-52

4.2.3不同工作压力下的模拟结果与分析52-53

4.3模拟结果与实验结果对比53-58

第五章不同影响因素下磨料流加工的数值模拟分析58-74

5.1流体磨料的粘度对圆孔工件孔道内压力和速度的影响58-65

5.2流体磨料的工作压力对圆孔工件孔道内压力和速度的影响65-68

5.3圆孔工件的直径对工件孔道内压力和速度的影响68-72

5.4结论72-74

第六章总结与展望74-76

6.1总结74-75

6.2展望75-76

参考文献

andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4）forspringhangers（includedsimplespring,hangersandconstantsupporthangers）itshouldalsoberecognizedassettingandlockingofloads.5）checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5）aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust（torque）limitrequirements;i