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1、附录ComplianceofhydraulicsystemanditsapplicationsinthrustsystemdesignofshieldtunnelingmachineAsthemostsignificantperformance,complianceofhydraulicsystemisdefinedasthecapacitytoaccommodatethesuddenchangeoftheexternalload.Duetothedifferentrequirementsofthecompli
2、anttasks,theexistingmethodformechanicalsystemscannotbeusedintheanalysisanddesignofthehydraulicsystem.Inthispaper,thedefinitionandexpressionofcomplianceofhydraulicsystemareproposedtoevaluatethecomplianceofthehydraulicsystemoperatingundersuddenchangeload.Becau
3、setheunexpectedgeologicalconditionsduringexcavationmayexertsuddenchangeloadtotheshieldtunnelingmachine,thecompliancetheoryhasfoundarightapplicationinthethrusthydraulicsystem.Byanalyzingthebasicoperatingprincipleandthecommonlyusedarchitecturesofthethrusthydra
4、ulicsystem,acompliancebasedthrusthydraulicsystemdesignmethodispresented.Moreover,atunnelingcaseisinvestigatedinthepaperasanexampletoexpoundthevalidationofdesignprocedure.Inconclusion,thecomplianceofthehydraulicsystemcanbeservedasanevaluationofthecapabilityin
5、conformingtotheloadimpact,givingsupportsforthedesignofthethrusthydraulicsystemofshieldtunnelingmachines.compliance,hydraulicsystem,loadimpact,thrustsystemdesign,shieldtunnelingmachine1、IntroductionDuetotheirhighdurability,highpower-to-weightratiosandrapidres
6、ponses,hydraulicdrivesystemshavebeenplayingaveryimportantroleinadiverserangeofapplicationsandindustries.Especiallyfortheheavy-dutymachinesandthoseoperatingundertheworstorextremeconditions,suchasconstructionmachinery,hydraulicpowertransmissionisthebestandmost
7、lyexclusivesolution.Anessentialissueinsuchapplicationsistheproperinteractionbetweentheactuatorandtheenvironment,becauseitisinevitableforhydraulicsystemstosufferconsiderablyheavyimpactloads.Insuchsituations,thehydraulicsystemshouldbecompliantwiththeexternallo
8、adappliedonit,andmakeastableresponseasmuchaspossibletotheenvironmentwhiletheenergyofimpactsisdissipatedandthedesiredworkingpressureisachieved.Thetransitionbetweenthenormalconditionstoimpactrespo
