Environmental Shock Simulator GHI Sys的環(huán)境沖擊模擬器地系統(tǒng)

GHI’sESSM

EnvironmentShockSimulationMachineAPowerfulConcept-ProducesEquivalentHardSurfaceShocks-ForEvaluationofMiniaturizedorHand-HeldDevicesCopyright?2019GHISystems,Inc.AllRightsReserved1HardSurfaceEnvironmental

ShockPhysicsDropsonhardsurfacesproducethemostsevereenvironmentalshocks.Haveveryhighaccelerationandfrequency.Resultsinveryshortstoppingdistanceshavinghighstrainrate.CauseproductcaseandinternaldamageThesedynamicscan’tbeaccuratelysimulatedbyprogrammedshockordroptestmachines.ESSMcontrolsthevariablesofimpactorientation,impactsurfaceanddynamics.2.ParametersNeededforSimulationUnrestrainednon-tumblingfreefallfromthreatheightImpactsurfacetosimulateenvironmentControlledimpactandsensororientationDropvelocityverificationCapturedshockwaveformforanalysisShockResponseSpectrum 3.ESSMVsDropShockMachineSimulatesEnvironmentShockExactdropheightGaugesimpactvelocitySimulatestheimpactsurfaceWorstCasestoppingdistanceRepeatabledynamicsEasyforHSvideoto“see”theimpactdynamicsSmallLabspacefootprintEasilyrelocatedLoweroverallcost ImpactlimitedbyMEPOnlyequivalentdropheightImpactvelocitynotcontrolledNoimpactsurface-isfixturedStoppingdistanceislimitedDynamicslimitedbyfixtureDifficultforHSvideoShowslittleofrealenvironmentshockLargerelativefootprintHardtorelocateHigheroverallcostESSMDROPSHOCK4.BasicESSMElementsGuideRodsUUTGrasperUUTGrasperPre-ImpactTriggeredRetractingHolders72”DropHeightScale&VelocimeterSensorUUTGuideStopCushions&ReleaseTriggersSurfaceSimulatorAnvilESSMSeismicMassDetachableImpactAnvilShockSensorOnUUTDropheightSettingandUUTrelease5.BasicESSMBase...........18〞x16”Seismicmass.....120lbsplusanvilShafts...........SS1.00”on8”centersBearings.........RecirculatingBallImpactAnvilSize...8”wx6”dAnvilMaterial.....SSorHardWoodBlockMaxDropHt......72”MaxImpactVel...235.8“/secMaxUUTWt.....5lbMaxUUTSize....6”BetweenGrippingfaces*MinUUTSize....0”O(jiān)verallHeight....75”Standard,otherheights optional*UUTmaybegrippedinvariousorientations.6.ESSMOperationEnvironmentsurfacesampleisinstalledonbaseanvilifrequiredUUTismountedoncarriageindesiredorientationAccelerometerisappliedtoUUTwithmaincableanchoredtoUUTcarriageandlinkedwiththinflexiblenon-encumberingcableUUTcarriageisraisedtodesiredheighttomatchsimulationUUTcarriageisreleasedresultinginfreefalltowardanvilRestrainedUUTmaintainsorientationtillimpactUUTGrippersaretriggeredtoreleasepriortoimpact,AdjustableUUTimpactsanvilfreeoftumblingatdesiredorientationandvelocityShockdataandpre-impactvelocityarecapturedbyGHIinstrumentationtocorrelatedwithenvironmentshockdamage7.FeatureFAQsUUTGrippers(2)...........2”Dia.Circular*UUTGripperMaterial........NonconductivelowdensityplasticReplaceableGrippers?......YesReplaceableAnvil?.........Yes*Instrumentation,............ShockAnalysisw/SRSoptionalImpactVelocity.............VSStandardPrice,Delivery.............ContactGHI*OtherconfigurationsOptional8.TypicalDesignofDropReleaseUUTcarriagereleaseissettodesireddropheightandclampstightened.UUTcarriageisraisedtodesiredheightfordropandlatchedtoUUTcarriagereleasehookonelectromagneticsolenoid.ThisallowsseamlessheightsettingfordesiredEUEsimulation.ActualvelocityismonitoredbyGHIvelocimeter.9.UUTGripperDesignOverviewQuick-adjustGripperFingersOrientationRotationLock10.Minimum2”GripperReleaseHeightSimulatedproductis5”widex2.5“thickx2.5”deep,showninfreefallat2”aboveimpactsurface.11.2.5”FormatHardDiskDriveinGrippersShownbeforerelease.Anglesetto15oimpactangle.12.GraspingFlexibility2.5InchformatharddiskdriveshowngraspedintheZaxisforapreciseX-Yplanecornerimpactshock.13.GraspingFlexibilityCellphoneheldforrandompositionshock-objectcanbereleasedaninchortwoaboveimpactsurface.Freefallcanbesetupto72inchesabovetheimpactsurface.Impactsurfacecanbechangedtocomplywithparticulartestprotocolsortosimulateactualenvironmentalthreats.Pre-impactvelocitywillbemeasuredaswellasshockaccelerationtimehistory.SRSsoftwareforpyrotypeanalysisisoptional.

14.StrainGaugeUseStrainGaugesarecompatiblewiththeGHISystemsDatarecordingandanalysissystem.Filmdevicesmayrequirebridgesandamplification,solidstatedevicesaresimpler.Dynamicstraininducedfailuresmaybemeasured.15.GrasperReleaseActionLatchBarReleaseSpringLatchedConditionReleasedCondition16.HSVideoFrame-Corner17.ESSMSummaryESSMsimulatesenvironmentaldropheight,impactvelocity,andimpactsurface.Impactsurfacesquicklyreplaceableforspecifictestprotocols.MaintainsProductOrientationtosimulateactualevents.FlexibleUUTholdingorientationoptions.Highsampleratedatasystemforimpactvelocity,uniaxialortriaxialshockaccelerationanddynamicforce–upto1MHz.FullShockSRSS/WModuleOptional.Smallfootprint18“x16“,easily