Autodesk Autocad Full 2012 Manuel télécharger pdf (Page 12)

AutoCAD2011ProductivityStudy

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12 ©2010DavidS.Cohn

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• InAutoCAD2008,thewallsandroofsofthepavilioncanbecreatedbyloftingtocreatesurfaces.

However,sincethereisnoassociativitybetweenthesurfacesandtheguidecurves,whentheguide

curvesaremodified,ifthechangesareminor,itispossibletoalsoselectandmodify

thesurfaces,but

inmostinstances,thefastestwaytoupdatethemodelistodeletetheprevioussurfacesandthen

createnewsurfacesbyloftingagainbetweenthemodifiedcurves.Inordertocreatetheskylight

opening,youhavetoprojectaplanviewofthelowerroofand

thenuseitsboundariestocreatea

solidthatcanbesubtractedfromtheupperroof.Whenadditionalchangesaresubsequentlymadein

thefifthdesigniteration,thisprocessmustberepeatedagain.

• InAutoCAD2011,thewallsofthepavilioncanbecreatedbylofting(asin2008)and

theroofscreated

aseithernetworkorpatchsurfaces.Thankstotheassociativitybetweenthesurfacesandtheguide

curves,whentheguidecurvesaremodifiedtocreatethesubsequentdesigniterations,thesurfaces

immediatelyupdatetoreflectthosechanges.Theskylightcanbecreatedbyprojectingcurvesonto

the

roofsurfaceandthenthosecurvescanbeusedtotrimtheopening.Whenfurtherchangesare

madeinthefifthdesigniteration,theassociativityagaincausesthesurfacestoimmediatelyreflect

thechangestotheunderlyingcurves.

Thisdrawingtook34minutestocompleteusingAutoCAD2008.Thesamedrawing

tookonly17minutesto

completeusingAutoCAD2011,animprovementof50percent.

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Task#5:3Dconceptualdesignstudy

AutoCAD2011was50percentmoreefficientinthecreationofthetask#5drawing.Themostsignificant

improvementwastheimprovedworkflow.Insteadofhavingtodeleteandre‐createsurfaceseachtimethe

shapeofthepavilionwasmodified,curveassociativityinAutoCAD2011enabledthesurfacestoimmediately

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updatetoreflectthosechanges.

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AutoCAD2011 AutoCAD2008

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Autodesk Autocad Full 2012 Manuel Page 12