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1、附录ComplianceofhydraulicsystemanditsapplicationsinthrustsystemdesignofshieldtunnelingmachineAsthemostsignificantperformance,complianceofhydraulicsystemisdefinedasthecapacitytoaccommodatethesuddenchangeoftheexternalload.Duetothedifferentrequirementsofthecomplianttasks,theexi
2、stingmethodformechanicalsystemscannotbeusedintheanalysisanddesignofthehydraulicsystem.Inthispaper,thedefinitionandexpressionofcomplianceofhydraulicsystemareproposedtoevaluatethecomplianceofthehydraulicsystemoperatingundersuddenchangeload.Becausetheunexpectedgeologicalcondi
3、tionsduringexcavationmayexertsuddenchangeloadtotheshieldtunnelingmachine,thecompliancetheoryhasfoundarightapplicationinthethrusthydraulicsystem.Byanalyzingthebasicoperatingprincipleandthecommonlyusedarchitecturesofthethrusthydraulicsystem,acompliancebasedthrusthydraulicsys
4、temdesignmethodispresented.Moreover,atunnelingcaseisinvestigatedinthepaperasanexampletoexpoundthevalidationofdesignprocedure.Inconclusion,thecomplianceofthehydraulicsystemcanbeservedasanevaluationofthecapabilityinconformingtotheloadimpact,givingsupportsforthedesignofthethr
5、usthydraulicsystemofshieldtunnelingmachines.compliance,hydraulicsystem,loadimpact,thrustsystemdesign,shieldtunnelingmachine1、IntroductionDuetotheirhighdurability,highpower-to-weightratiosandrapidresponses,hydraulicdrivesystemshavebeenplayingaveryimportantroleinadiverserang
6、eofapplicationsandindustries.Especiallyfortheheavy-dutymachinesandthoseoperatingundertheworstorextremeconditions,suchasconstructionmachinery,hydraulicpowertransmissionisthebestandmostlyexclusivesolution.Anessentialissueinsuchapplicationsistheproperinteractionbetweentheactu
7、atorandtheenvironment,becauseitisinevitableforhydraulicsystemstosufferconsiderablyheavyimpactloads.Insuchsituations,thehydraulicsystemshouldbecompliantwiththeexternalloadappliedonit,andmakeastableresponseasmuchaspossibletotheenvironmentwhiletheenergyofimpactsisdissipatedan
8、dthedesiredworkingpressureisachieved.Thetransitionbetweenthenormalconditionstoimpactrespo
