,AMERICANNATIONALSTANDARDSymbolsforMechanicalandAcousticalElementsasUsed0InSchematicDiagramsANSIY32.18-1972FORCURRENTCOMMITTEEPERSONNELPLEASESEEASMEMANUALAS-I1SECRETARIATINSTITUTEOFELECTRICALANDELECTRONICSENGINEERSTHEAMERICANSOCIETYOFMECHANICALENGINEERSPUBLISHEDBYTHEAMERICANS.OCIETYOFMECHANICALENGINEERSUnitedEngineeringCenter345East47thStreetNewYork,N.Y.10017CopyrightedmateriallicensedtoStanfordUniversitybyThomsonScientific(www.techstreet.com),downloadedonOct-05-2010byStanfordUniversityUser.Nofurtherreproductionordistributionispermitted.UncontrolledwREAFFIRMED2003FORCURRENTCOMMITTEEPERSONNELPLEASEE-MAILCS@asme.orgNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.Copyright8,1972,byTHEAMERICANSOCIETYOFMECHANICALENGINEERSPrintodinU.S.A.CopyrightedmateriallicensedtoStanfordUniversitybyThomsonScientific(www.techstreet.com),downloadedonOct-05-2010byStanfordUniversityUser.Nofurtherreproductionordistributionispermitted.UncontrolledwFOREWORDEverincreasingusehasbeenmadeduringrecentdecadesofschematicdiagramsinrepresentingmechani-calandacousticalsystems.Thisdevelopmentisanaturaloutgrowthofthesametechniqueaswasdevelopedearlierforelectricnetworks.Suchdiagramsareimportantbecauseoftheirusefulnessintwoconnections.First,amechanicaloranacousticalsystemcanbeanalyzedmuchmorerapidlywithaschematicdiagramthanwithout.Indeed,systematicmethodshavebeendevelopedinrecentyearswhichcangeneratecorrectdescriptiveequationsforthesystemgivenitsschematicdiagramandspecificationsofthepropertiesofeachelementinthesystem.Furthermore,theuseofsuchmethodstendstominimizeblundersinanalyses,suchaswrongsignsforterms,whicheventhemostexperiencedanalystisapttomakefromtimetotime.Second,asananalystgainsexperiencewithschematicdiagramshedevelopsaninsightintothecharacter-isticperformanceofcollectionsofinterconnectedelements.Thushedevelopsanabilitytoanticipatetheperformanceofasystem,atleastinaqualitativeway,basedsolelyonastudyofitsschemati...
