Solidworks Simulation6U-RFmodulevibrationanalysis

Glevelresponseatthelocationofthecrystaloscillator

D. Blanchet 3B Associates02-03-13 RA

PurposeandAssumptions

• Evaluatethevibrationresponseofa 6UelectronicsassemblyinthelocationofthecrystaloscillatorpackageusingSolidworks FEA

• Theinputlevelisrandomvibrationinall3axes– 0.04gsq/hz ,20-2000hz

• GeometricinputderivedfromSolidworks 3Dmodelandsimplified

• Totalweightoftheassembly– 4.9lbs

• AssemblyDampingassumption– 10%

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Solidworksmodelview

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Solidworksmodelview

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Solidworksmodelview– crystalpackagelocation

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Solidworks modelforFEA2of4possibleconnectorlocationsused

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P1

P2

SolidworksFEAmodel– mesh

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SolidworksFEAmodel– meshdetail

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Solidworks FEAmodel– restraints>fixedboundaryconditions

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SolidworksFEAmodel– ZaxisresponseG’srms

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Corner point virtualAccelerometer location

Solidworks FEAmodel– psd responseplotinthefrequencydomain

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34.9 Grms = 104.7 G – 3 sigma

Conclusions

• Themaximumresponseatthecrystallocationisapproximately105G’swhentheunitisundervibrationinthez-axis

• Significantenhancements(loweringofthepeakGlevel)canbeaccomplishedby:

• Relocatingthecrystaltowardthefrontpanel• SupportingthemoduleintheP2connectorlocations

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