Honeywell plastic design guide

CAPRON®nylonPETRA®PETNYPEL®recyclednylonHoneywellPlasticsDesignSolutionsGuideTopicPart/PageWelcome!.............................................IOverview................................................I–2HoneywellProductLine....................................I–2Recycling................................................I–3DesignAssistance..........................................I–3CAD/CAECapabilities......................................I–3Safety....................................................I–3DesignConsiderationsforInjectionMoldedParts..........IIPartingLines..............................................II–2DraftAngles..............................................II–3WallThickness............................................II–3FilletsandRadii...........................................II–3Bosses...................................................II–4Ribs.....................................................II–4Openings................................................II–5Shrinkage................................................II–5Gating...................................................II–5Vents....................................................II–6PotentialKnitLines........................................II–6StructuralDesign......................................IIIStress....................................................III–2Stress-Strain...............................................III–2NormalStress.............................................III–3ShearStress...............................................III–3TorsionalStress............................................III–4BendingStress............................................III–5SectionPropertiesofVariousCross-Sections....................III–6ExplanationofVariables.....................................III–6BeamSections............................................III–6FormulasforCommonBeamsinBending......................III–7FormulasforTorsionalDeformationandStress..................III–8I,TandLSections..........................................III–9FormulasforFlatPlates.....................................III–10FlatPlateEquations........................................III–10PressureVessels...........................................III–11ThermalExpansionandStress...............................III–12ImpactStresses............................................III–13StressConcentrations......................................III–14RibDesign...............................................III–15DesignforEquivalentStiffness...............................III–18TableofContentsDesignExamples......................................IVCruiseControlBracket.....................................IV–2CoverCap................................................IV–4Assembly.............................................VSnap-FitAssembly..........................................V–2Snap-FitDesign............................................V–2Cantilevervs.Cylindrical....................................V–2TaperedCantilever.........................................V–2ShortCantileverDesign.....................................V–3NewFormulas............................................V–4Snap-FitDesignExample....................................V–4Press-FitAssembly..........................................V–5AdhesiveBonding.........................................V–6Bolts,Nuts,andMachineScrews..............................V–8Molded-inThreads.........................................V–9Self-TappingScrews........................................V–10Inserts...................................................V–11UltrasonicWelding.........................................V–12ShearJoint...............................................V–12EnergyDirector...........................................V–13VibrationWelding..........................................V–14OtherAssemblyTechniques.................................V–15ThermoplasticStaking......................................V–15SpinWelding..............................................V–15ElectromagneticWelding....................................V–16PlasticMaterials.......................................VIClassificationofPlasticMaterials..............................VI–2MolecularWeightDistribution...............................VI–4PhysicalProperties.........................................VI–5Density..................................................VI–5ThermalExpansion........................................VI–5ThermalConductivity......................................VI–6PhysicalProperties....................................VIITheMechanicalPropertiesofPlastics.........................VII–2Short-TermProperties......................................VII–2Notches..................................................VII–2RateofLoading...........................................VII–2Temperature..............................................VII–4ThermalAging............................................VII–4Moisture.................................................VII–5Dim