(plastics.dupont，general design principal)H76838.pdf

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1、dDesignGuide—ModuleIDuPontEngineeringPolymersGeneralDesignPrinciplesforDuPontEngineeringPolymersStartwithDuPontCopyright©2000E.I.duPontdeNemoursandCompany.Allrightsreserved.TableofContents1—General...............................1TubingandPressureVessels................15Introduction..

2、.............................1BucklingofColumns,RingsandArches.......15DefiningtheEnd-UseRequirements...........1FlatPlates................................22PrototypingtheDesign......................3OtherLoads..............................22MachiningfromRodorSlabStock..........3Fatig

3、ueResistance.......................22DieCastingTool..........................3ImpactResistance.......................22PrototypeTool...........................3ThermalExpansionandStress.............22PreproductionTool.......................3LongTermLoads..........................22Tes

4、tingtheDesign..........................4TensileLoads...........................24BendingLoad...........................25WritingMeaningfulSpecifications............4RibDesign.............................262—InjectionMolding......................5Cross-Ribbing..........................

5、.26UnidirectionalRibbing...................28TheProcessandEquipment..................5TheMoldingMachine.......................55—DesignExamples.....................32TheMold.................................5RedesigningtheWheel.....................32WebandSpokeDesign...................

6、323—MoldingConsiderations................6RimDesign.............................33UniformWalls.............................6FiniteElementAnalysisinWheelDesign....33CostEffectiveDesignvs.RawConfigurations.............................6MaterialCost.........................34DraftandKnock

7、-OutPins....................7ChairSeatsReevaluated....................34FilletsandRadii............................7Bosses...................................86—Springs...........................36Ribbing...................................8CantileverSprings.........................37Ho

8、lesan