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1、DESIGNOFSTRUCTUREWITHCOMPOSITES31F.J.Schwantoavoidconfusioninthischapter.Theterm31.1INTRODUCTION'materialproperties'isusedgenerallytoCompositematerialsarefindingmoreusesincludeextensionalandcompressivemodulieachyearacrossawidespechumofapplica-ofelasticity,Poissonratios,inplaneshea
2、rmod-tions.Designersofstructuralcomponents,inulus,coefficientsofthermalexpansionandparticular,continuetofindnewapplicationsforcoefficientsofmoistureexpansion.'Designreinforcedcompositematerials.Themostsuc-allowables'refertomaterialstrengths,specifi-cessfulstructuralapplicationsare
3、thosewherecallytension,compression,inplaneshear,theinnateadvantagesofreinforcedmaterialsinterlaminarshearandbearing.Thisdistinc-canbetranslatedintoperformanceadvantagestionbetweenmaterialpropertiesandstrengthsforthemanufacturedpart.Theseadvantagesisestablishedbecauseofthesignifica
4、ntdiffer-includestiffness-to-densityratios,strength-to-enceswhichexistinourabilitytopredictanddensityratios,lowthermalexpansionmeasureeachgroup,andbecauseofthediffer-characteristics,andoccasionallyothers,suchasenttreatmentwhichpropertiesandstrengthsresistancetospecificenvironments
5、,thermalreceiveinallphasesofthedesignprocess.conductivity,andfatiguecharacteristics.Thissectionfocusesonthedesignofcom-31.2DESIGNPROCESSponentsdeterminedbymechanicalperformancerequirementssuchasstiffness,Ageneralcommentconcerningthecontentsofdurability,orstrength.Theimportanceofth
6、issection,andthechapteringeneral,isthatestablishingandarticulatingdesignrequire-theperspectiverepresentedthroughoutthementscannotbeoverstated.Theextenttochapteristhatofadesignerwithinalargewhichdesignrequirementsareisolatedandorganization,operatingaspartofalargequantifieddetermine
7、sthedegreeofcertaintydesignteam,asituationtypicalofaerospaceassociatedwithtradestudiesandmaterialprojects.However,theprocessisthesameforselectiondecisions.Unsuccessfulapplicationsallsizesofprojectsinvolvedwithdesignofarequiteoftentheresultofunclearorpoorlycompositestructure.Thepri
8、marydifferencesdefineddesignrequi
