ei期刊模板Word文档下载推荐.docx

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　　1.introduction

　　Researchachievementshavebeenincontactmechanicsoffracturingtechnologytofurtherenhancethedomesticlevel,controlproductioncosts,suchashigh-voltageswinghasmadeasignificantcontribution.tofurtherraisethecontactforcedistribution,weuseansyssimulationpackerseated,consideringnonlinearcontactproblemscharacteristicsandplastictubesealingseatwhentherubbermaterialofthepackerseatsealprocessnumericalsimulationanalysis,findcontactsneridistribution.

　　2.contactmodelanalysisofthestressstate

　　plastictubeaxialcompressivestressstate,radialexpansion.Researchbytheexpansionoftheinnerwallofthesteelsleeveplastictubeextrusionroleradialpressure,theuseofisolationmethod,aseparatestudyonsteelsleeve,steelsleeveinthespaceofstressstate,asshownbytheforceofthe

　　innerwallofthesteelsleevecaseinFigure1.

　　Figure1asteelsleeveinnerwallbytheforce.

　　Fistheaxialpressure,piistheradialpressure,asteelsleeveinnerdiameter,outerdiameterisb,

　　2.stressanalysisofthin-walledcylinder

　　showninFigure1,weknowthatthestressdistributionisaxisymmetric.thus,theexpressionistotakethestresscomponents:

　　a

　　2b（1ln）2c,

　　b（32ln）2c,（2-1）

　　2

　　0whereintheaboveformula,theradialstress,hoopstressandshearstress,a,b,cisaconstant.boundaryconditionsforthesleeve:

　　（）a0,（）b0

　　（2-2）

　　（）aqa,（）bqb

　　steelsleeveareonlysubjecttointernalpressureproblem,sotheanswerwegetlame

　　b2

　　qa（2-3）b2

　　12ab2

　　122qa…………………………………………（2-4）

　　b1asincethesteelsleeveisaxiallysymmetricproblem,thecalculationofcircumferentialstrainwasanalyzedbythefollowingformula

　　1

　　z（2-5）

　　e

　　3.rubberdeformationtheoryfoundation

　　stiffnessisdefined:

referstothedisplacementoftherubberinacertainrange,thepressureon（ortensilestrength）anditsdisplacementratiooftheamountofvariationiscalledstaticstiffness.becauserubberhassuchastaticstiffnesscharacteristics,variablecompressiondeformationcanrestoretheoriginalstate,radialaxialpressurecanoccuraftertheexpansion.

　　F

　　F3F2

　　F1

　　x1x2x3

　　x

　　Figure2Rubbercompressionload-displacementcurve

　　therubberiscompressedtoarangeofthedisplacementamountafterthepressurewasslowlylifteduniformrelationshipbetweentherubberandtheamountofdisplacementoftheloadsufferedbythenon-linearrelationshipshowninFigure2,theexternalforcecanbeliftedbacktotheinitialpositionoftherubber,thereisnohysteresiswithrespecttothedisplacementoftheload.

　　Fromtheabovetestscanbedrawn:

theuseofplastictubeaxialcompressivecontactforcetodothetesttrialstomeetassumptions.

　　4.ansyssimulationanalysis

　　usingansysmechanicalmodeloftheplastictubeincontactwiththesteeljacketforfiniteelementanalysis,thesteelsleevewallhoopstressstraindistribution.accordingtotheexperimentalmethodandtheloadcharacteristics,selectthreehollowplastictube,thepartitionring,fixedtubeandpipeastheresearchobject,createastructuralmodeloftheaxisofsymmetryshowninFigure3.

　　acontactforceanalysismodelbjacketwallstressmodel

　　Figure3mechanicalmodeltobuild

　　plastictubeandsteelcasingforanalysismodel,thediagramshowninFigurea,axialcompressioncones,plasticsqueezetuberadialexpansionpipewall,pipedeformation,therebymeasurethecontactstress.Figurebisadeformationofthecasingaftertheforcediagram,thespacerringcontact

　　areawithoutpower,plastictubeextrusionseverelydeformedparts.

　　（ei期刊模板）Figure4initialplastictubewithcasingseatsealcontactpressuredistribution

　　Figure5plastictubeaxialcompressiondeformationmaps

　　plastictubeunderaxialcompressionp=100mparoleinaxialcompressionconesshowninFigure5.

　　ascanbeseenfromFigure5,theplastictubewhentheaxialpressurereaches100mpa,thecompressiondistanceofthreeplastictube61mm,atthistimearethethreeplastictubeandthesteelinnerwallofthesleeveintocontacttovaryingdegrees,whereintheplastictubeandsteelsetsthemaximumcontactpressure,thevalueof102mpa.

　　thecalculationresultsareshowninthreedifferentconditionsareshownintable1.

　　changeofthethreecartridges.

　　80mpacontactpressureconditionschange100mpacontactpressureconditionschange

　　Figure6

　　thegreateststrain,thepressureonthetopconeslargest,moredownsmaller;

inconesandconessufferedunderpressuremainlyinthemiddleoftheplastictube,plastictubeinwhichthecompressionratioconesbigger.thisincreasestheaxialpressuredistribution,showingmoreobvious.5.conclusions

　　plasticcylinderwithsteelsleevecontactstressanalysisforthesongtothedistribution,thelowestendofthemaximumcontactstress,andmainlyfortheplasticmiddle,followedbythemiddleoftheplasticbarrel,distributionshowedadecreasing.References

　　[1]lubinski,a.,althouse,w.s.,logan,j.l.helicalbucklingoftubingsealedinpackers[j].jpt,20xx,14（3）:

pp655-670.

　　[2]hammerlindl,d.l.movement,Forcesandstressesassociatedwithcombinationtubingstringssealedinpackers[j].pet,20xx,29

（1）:

pp195-208.

　　[3]hammerlindl,d.j.basicFluidandpressureForcesonoilwelltubular[j].j.pet.tech.,20xx,32（3）:

pp153-159.

　　[4]hammerlindl,d.j.packer-to-tubingForcesforintermediatepackers[j].j.pet.tech.,20xx,32

（2）:

pp515-527.

　　[5]cheatham,j.b.,pattillo,p.d.helicalpostbucklingconfigurationofaweightlesscolumnundertheactionofanaxialload[j].spe,j.20xx,（4）:

pp467-472.

　　篇二：

ei收录期刊

　　篇三：

ei论文格式模板

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papertitle）

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dept.nameoforganizationline2-nameoforganization,acronymsacceptable

　　line3-city,country

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　　line3-city,countryline4-e-mailaddressifdesired

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donotusesymbols,specialcharacters,ormathinpapertitleorabstract.（abstract）

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style;

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insert（keywords）

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