Q/SZJ191001-2017千斤頂強(qiáng)度分析規(guī)范SpecificationOfStrengthAnalysisForJackingInBody20XX20XX-XX-XX實(shí)施20XX-XX-XX發(fā)布XXXX汽車工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017千斤頂強(qiáng)度分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了千斤頂工作時(shí)車身局部強(qiáng)度的分析的分析方法，以滿足設(shè)計(jì)車的強(qiáng)度設(shè)計(jì)需求。本標(biāo)準(zhǔn)適用于CAE部門千斤頂強(qiáng)度分析。規(guī)范性引用文件無。術(shù)語(yǔ)和定義無。流程圖PROCESSFLOWDIAGRAM圖1流程圖Fig1ProcessFlowDiagram工具描述TOOLDESCRIPTION仿真分析過程中需要用到的如下軟件:Thefollowingsoftwarefacilitatestheanalyticalsimulationprocess:前處理(Preprocessors):Hypermesh求解器(AnalysisCode):Abaqus后處理(Postprocessors):Hyperview建模和分析過程MODELING/ANALYSISPROCEDURE單位Units分析中所用單位制如下所示:Theunitsusedintheanalysisareasfollows:力(Force) N質(zhì)量(Mass) T長(zhǎng)度(Length) mm時(shí)間(Time) s應(yīng)力(Stress) Mpa內(nèi)容Contents該模型主要包括車身側(cè)圍、千斤頂壓頭、門檻梁、縱梁、橫梁、地板等，如下圖：Thismodelmaincontainsbodysides,jack,rock,rail,crossmembers,floorpan(maybeomittedbaseduponengineeringjudgment),showinthefollowingfigure坐標(biāo)系CoordinateSystems該分析需要建一個(gè)局部坐標(biāo)，Thisanalysisisconductedunderthelocalsystem,XYZdirectionsareassameasvehicleglobalcoordinatesystem,(easytoload)建模技巧ModelingTechniques車身模型平均單元尺寸為8mmx8mm,車身千斤頂附近區(qū)域尺寸細(xì)化為2mmx2mm,千斤頂尺寸為2mmx2mm；螺栓連接采用可rigids單元模擬；縫焊采用seam中的penta(mig)單元模擬,直徑6mm;點(diǎn)焊采用acm（shellgap）單元模擬，直徑6mm。BIWaverageelementsize:8mmx8mm;BIWnearbyjackdivideinto2mmx2mm,jackelementssize:2mmx2mmBolts:rigidsSeamwelding:penta(mig)inseam,Diameter=6mmSpotwelding:shellgapinacm,Diameter=6mm假設(shè)和限制ASSUMPTIONS/LIMITATIONS無。假設(shè)Assumptions無。限制Limitations材料Material材料Nonlinearmaterialpropertiesareassignedtotherock.約束和邊界條件CONSTRAINTS/BOUNDARYCONDITIONS約束：距離jack位置至少600mm處截取車身，節(jié)點(diǎn)約束SPC123；Constrains:bodystructureatthecross-carcutplane,spc123;載荷LOADS載荷：1、在千斤頂上加載Z向0.5倍的GVM，2、繞X軸向車輛內(nèi)外側(cè)各偏15度加載0.5倍的GVMLoads：1、applyaload0.5timesGVMinZdirectiononthejackandthenreducedto0N2、applyaload0.5timesGVMaroundthevehicleinsideandoutsidetheXaxiseachpartial15degreesandthenreducedto0NJackJack性能要求PERFORMANCEREQUIREMENTS無。分析要求ANALYSISREQUIREMENTS時(shí)間歷程節(jié)點(diǎn)TimeHistoryNodes無。輸出文件OutputFiles千斤頂處車身的塑性變形和塑性應(yīng)變Remnantdeformationandplasticstrainonthejacklocationofvehicle分析時(shí)長(zhǎng)AnalysisDuration無。結(jié)果RESULTS車身結(jié)構(gòu)沒有損毀或永久變形。只要不妨礙千斤頂后續(xù)的運(yùn)動(dòng)，門檻處焊接邊允許有輕微的變形。從結(jié)果文件odb中讀取千斤頂處車身的塑性變形和塑性應(yīng)變目標(biāo)值：塑性應(yīng)變≤3%，塑性變形≤0.5mmNodamageorpermanentdeformationtothevehiclestructure.Slightdeformationoftherockpinchweldflangeisacceptable,provideditdoesnotimpedesubsequentengagementofthejack.Readtheresultsofplasticdeformationandplasticstrainonthejacklocationofvehiclefromtheodbresultsmodal.Target：plasticstrain≤3%,remnantdeformation≤0.5mm殘余變形/remnantdeformation塑性應(yīng)變/plasticstrain結(jié)果格式ResultsFor