Experimentandnumericalanalysisofthetestofcoppercylinder

pressuregaugeundercombinedperforationpressure

CUI Chun-sheng; MA Tie-hua; ZU Jing

doi:10.11883/1001-1455(2012)04-0439-06

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CUI Chun-sheng, MA Tie-hua, ZU Jing. Experimentandnumericalanalysisofthetestofcoppercylinderpressuregaugeundercombinedperforationpressure[J]. Explosion And Shock Waves, 2012, 32(4): 439-444. doi: 10.11883/1001-1455(2012)04-0439-06

Citation:

CUI Chun-sheng, MA Tie-hua, ZU Jing. Experimentandnumericalanalysisofthetestofcoppercylinder pressuregaugeundercombinedperforationpressure[J]. Explosion And Shock Waves, 2012, 32(4): 439-444. doi: 10.11883/1001-1455(2012)04-0439-06

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Experimentandnumericalanalysisofthetestofcoppercylinder pressuregaugeundercombinedperforationpressure

doi: 10.11883/1001-1455(2012)04-0439-06

1.
NationalKeyLaboratoryforElectronicMeasurementandTechnology,
2.
NorthUniversityofChina,Taiyuan 030051,Shanxi,China;
3.
KeyLaboratoryofInstrumentationScience& DynamicMeasurement,
4.
NorthUniversityofChina,MinistryofEducation,Taiyuan 030051,Shanxi,China

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Corresponding author: CUI Chun-sheng
Publish Date: 2012-07-25

Abstract

Abstract

Aexperimentsofdownholeperforationandfracturingpressurelivetestbasedoncoppercylinderandcorrespondingp- tcurvesatthesametimewereperformed.A mathematicalmodelforcoppercylindergaugeswasdevelopedandobtainedtheanalyticalsolutionofitsworkingprocesswasobtainedbyusinganin eractivecalculationmethod.Theresultsshowthatthetestvalue,whichcopper cylindergotindownholeperforationandfracturing,maybelargerthanthetruevalueorbesmaller, mainlydependingonthepressurerisetime,pulse width,peakpressureandotherfactors.The processofdownholeperforationandfracturingisdifferentfromartillerychamberpressure,thepressurerisetimeisshort. Velocityofthepistonisstilllargewhenexternalpressurepassedthepeakand thepistonwillcontinuecompressthecylinderuntilitsvelocityreducedtozero.Inthisprocess,the pistoncanbedividedintotwoparts:Rapidaccelerationanddecelerationduringimpact.Themaximumvalueofpistonvelocityisdeterminantsforthefinaltest, thegreaterthespeedthegreaterthe testvalue,Itisproposedthatcoppercylinderpressure-measuringgaugewithlightqualitypistonbe developedtoreducecoppercylindertesterrorinthiscase.
- mechanicsofexplosion,
- coppercylinderpressure-measuringgauge,
- combinedperforation,
- downholeexplosionpressure,
- chamberpressure