材料方向范文

材料方向范文材料方向范文 12 14 4 Assigning a material orientationor rebar reference orientationYou canassign a material orientationor a rebar reference orientation The following sections describehow to assign theseorientations Assigning amaterial orientation Assigning arebar reference orientation Assigning amaterial orientation The global coordinate systemdetermines the default material orientations However you canassign specificmaterial orientationsto a shell solid part region skin or stringerby selectinga datum coordinate system or discrete field or by defininga discreteorientation For anAbaqus Standard analysisyou candefine thelocal coordinate system inuser subroutineORIENT The datum coordinate systemscan berectangular cylindrical or spherical and you can applyan additional rotation to the coordinate system ifrequired For moreinformation see Orientations Section2 2 5of theAbaqus AnalysisUser s Manual In caseswhere Abaqus CAE attemptsto drawcoordinate systemsfor material orientations atsingularity pointsof thesystem i e points forwhich theuser selected coordinate system and the geometriormal fromeither geometryor elementscannot beresolved into a validorientation fordisplay purposesin Abaqus CAE the coordinate system will be drawncollapsed For continuumshell elements Abaqus CAE doesnot projectthe displayedmaterial orientationsonto themidplane surface You canperform adata checkand viewthe outputdatabase in the Visualizationmodule to verify the material orientations For moreinformation see Performing adata checkon amodel Section19 7 3 The material orientations that you assign to a part or region are assigned automatically to all instances of that part in the assembly You canuse theQuery toolsetto verifythat you have assignedthe correctmaterial orientation to a selected region For moreinformation see Using theQuery toolsetto obtainassignment information Section12 18 You canedit suppress and resumepreviously definedmaterial orientationsby clickingmouse button3on thematerial orientation in theModel Treeand selectingthe suppressor resumeoption from the listthat appears For moreinformation see Suppressing andresuming objects Section3 4 3 To assign amaterial orientation toa part If the part to which youwant toassign amaterial orientation is not visible in the current viewport click thename of the desiredpart in the Partlist locatedin thecontext bar The selected part appearsin thecurrent viewport From themain menubar select AssignMaterialOrientation Tip You canalso click the toolin the Property moduletoolbox Select the shell or solid regions from the viewport and clickmouse button2to indicateyou havefinished selecting For moreinformation see Chapter6 Selecting objectswithin the viewport Tip You canlimit the types ofobjects that you canselect in the viewportby using the toolsin theSelection toolbar See Using theselection options Section6 3 for moreinformation If youselect Skinsas theobject type you canassign thematerial orientation to the entire skin or to one or more of its faces From the prompt area select pick entireskin or pick partialskin then makeyour selectionin the viewport If the selected parthas multipleskins Abaqus CAE willdisplay theambiguous pickingoptions in the prompt area whileyou makeyour selection If youselect Stringersas theobject type you canassign thematerial orientation to the entire stringer or to one or more of its edges From the prompt area select pick entirestringer or pick partialstringer then makeyour selectionin the viewport If theselected parthas multiplestringers Abaqus CAE willdisplay theambiguous pickingoptions in the prompt area whileyou makeyour selection If you would ratherselect froma listof existingsets do the following Click Setson the right sideof the prompt area Abaqus CAE displaysthe RegionSelection dialog box containinga listof availablepart sets Part setscontaining onlyshells orsolids appearin the list Select the part setof interest and clickContinue Note The defaultselection methodis basedon theselection methodyou mostrecently employed To revertto theother method click Selectin Viewportor Setson the right sideof theprompt area If youwant to specify amaterial orientationusing an existing datum coordinate system do the following Select the datum coordinate system Select a coordinate system in theviewport Select adatum coordinate system byname Click DatumCSYS Listfrom theprompt area select aname from the list and clickOK o Abaqus CAE displaysthe resultingmaterial orientationspecified for the region and theEdit MaterialOrientation dialog box appears Choose Axis1 Axis2 or Axis3to specify the coordinate system axis For ashell region specify the coordinate system axis that approximates thenormal to the shellin theNormal Direction portion of the dialog box For asolid region specify the coordinate system axis aboutwhich anoptional additional rotation oursin theAdditional RotationDirection portion of the dialog box If desired you canprovide an additional rotationof thematerial orientation about the shell normal for ashell region or abouta localaxis of the datumcoordinate system for asolid region using one of the following methods Choose Angle and enter a valuein degreesfor the additional rotation Choose Distribution and select an existingscalar discrete field thatdefines anangle thatis spatially varying acrossthe region Alternatively you canclick to create a new discretefield See Chapter63 The Discrete Field toolset for moreinformation o Abaqus CAE appliesthe additional rotation if any and displaysthe resultingmaterialorientation applied tothe region If youwant to use the globalcoordinate system default or specifyamaterialorientation ina discreteorientation user subroutine or a discretefield click UseDefault Orientationor OtherMethod fromtheprompt area You canalso selectan existingdatumcoordinate systemorcreate anew oneusing thisprocedure In theEdit MaterialOrientation dialog box thatappears click thearrow totherightof theDefinition field and selectone of the following Select Coordinatesystem and click to selectacoordinate system fromtheviewportorbyname Alternatively you canclick to create anew datumcoordinate system Select Globalto use the globalcoordinate systemor toreset apreviously assignedmaterialorientationback tothe globalcoordinate system Select Discrete and click to define a discreteorientation In theEdit DiscreteOrientation dialog box thatappears define thenormal axisand primaryaxis using the proceduredescribed in Using discreteorientations formaterial orientationsand positelayup orientations Section12 15 Select User defined todefine the orientationinuser subroutineORIENT This option is validonly forAbaqus Standard analyses See thefollowingsectionsfor moreinformation Specifying generaljob settings Section19 8 6 ORIENT Section1 1 15of theAbaqus UserSubroutines ReferenceManual Select a discretefield todefineaspatiallyvaryingorientation Alternatively you canclicktotherightof theDefinition fieldtocreate anew discretefield See Chapter63 The DiscreteField toolset for moreinformation Choose Axis1 Axis2 or Axis3to specify the coordinate systemaxis For ashell region specify thecoordinate systemaxis thatapproximates thenormal tothe shellin theNormal Direction portion of the dialogbox For asolid region specify thecoordinate systemaxis aboutwhich anoptional additional rotation oursin theAdditional RotationDirectionportionof thedialogbox If desired you canprovide anadditionalrotationof thematerialorientationabout theshell normal for ashell region or abouta localaxis of the datumcoordinatesystem for asolid region using oneof thefollowing methods Choose Angle and enter a valuein degreesfor the additionalrotation Choose Distribution and selectan existingscalar discretefield thatdefines anangle thatis spatiallyvarying acrossthe region Alternatively you canclicktocreateanewdiscretefield See Chapter63 The DiscreteField toolset for moreinformation o Abaqus CAE appliestheadditionalrotation if any and displaysthe resultingmaterialorientationapplied tothe region Choose oneof thefollowing to specify thestacking direction of continuumshell elementsorsolidelements Element isoparametricdirection1Element isoparametricdirection2Element isoparametricdirection3 bottom totop Normal directionof materialorientation The stackingdirection isthe3 directionof thematerialorientation Click OKin thedialogbox For informationon relatedtopics click anyof thefollowing items Creating andediting sections Section12 12Chapter6 Selecting objectswithin theviewport Chapter46 Plotting materialorientations Chapter63 The DiscreteField toolset Controlling datumdisplay Section76 9 Solid continuum elements Sect ion27 1 1of theAbaqus AnalysisUser s Manual Shell elements overview Section28 6 1of theAbaqus AnalysisUser s ManualAssigning arebar reference orientationTheangular orientationof arebar layeris definedrelative tothe rebar referenceorientation The globalcoordinatesystemdetermines thedefault rebar referenceorientation However you canassign arebar referenceorientation toashellpart region skin or stringerby selecting anexistingdatumcoordinatesystem fromtheviewportand thenselectinganaxis on the datumcoordinatesystemthatapproximates the directionof theshell normal The datumcoordinatesystemcan berectangular cylindrical or spherical and you can applyanadditionalrotation tothecoordinatesystem ifrequired For moreinformation see Orientations Section2 2 5of theAbaqus AnalysisUser s Manual The rebar reference orientationsthatyouassigntoapart orregionareassignedautomaticallytoallinstancesofthatpart in the assembly You canusetheQuery toolsettoverifythatyouhave assignedthe correctrebar referenceorientationtoaselectedregion For moreinformation see Using theQuery toolsetto obtainassignment information Section12 18 To assignarebar referenceorientationtoapart If thepart towhich youwant toassignarebarreferenceorientationisnotvisiblein thecurrent viewport clickthename of the desiredpartin the Partlist locatedin thecontext bar The selected part appearsin thecurrentviewport From themain menubar select AssignRebarReference Orientation Tip You canalso clickthe toolintheProperty moduletoolbox Select the regionsfromtheviewport and clickmouse button2to indicateyouhavefinished selecting For moreinformation see Chapter6 Selecting objectswithin theviewport Tip You canlimit thetypes ofobjects thatyou canselect intheviewportby usingthe toolsintheSelection toolbar See Using theselection options Section6 3 for moreinformation If youselect Skinsas theobject type you canassign therebarreferenceorientationtotheentireskinortooneormoreofi tsfaces From theprompt area select pick entireskin or pick partialskin then makeyour selectionintheviewport If theselectedparthas multipleskins Abaqus CAE willdisplay theambiguous pickingoptions intheprompt area whileyou makeyour selection If youselect Stringersas theobject type youcanassign therebarreferenceorientationtotheentirestringerortooneormor eofitsedges From thepromptarea select pick entirestringer or pick partialstringer then makeyour selectionintheviewport If theselectedparthas multiplestringers Abaqus CAE willdisplay theambiguous pickingoptions inthepromptarea whileyou makeyour selection If youwould ratherselect froma listof existingsets do thefollowing Click Setson theright sideof thepromptarea Abaqus CAE displaysthe RegionSelection dialogbox containinga listof availablesets Select thepart setof interest and clickContinue Note The defaultselection methodis basedon theselection methodyou mostrecently employed To reverttotheother method click Selectin Viewportor Setson theright sideofthepromptarea Specify a local coordinatesystemintheselectedregion usingoneofthefollowingmethods Select acoordinatesystemintheviewport Selectadatumcoordinatesystem byname Click DatumCSYS Listfromthepromptarea selectaname fromthelist and clickOK Click UseDefault Orientationtousetheglobalcoordinatesystem Abaqus CAE displaysthe resultingrebar orientationspecified for theregion andtheEdit RebarOrientation dialogbox appears Choose Axis1 Axis2 or Axis3to specify thecoordinatesystemaxis For ashell region specify thecoordinatesystemaxis thatapproximatesthenormal totheshellintheNormal Directionportionofthedialogbox For asolid region specifythecoordinatesystemaxis aboutwhich anoptional additionalrotation oursintheAdditional RotationDirectionportionofthedialogbox If desired youcanprovide anadditionalrotationoftherebarreferenceorientationaboutthes hellnormal for ashell region or aboutalocalaxis ofthedatumcoordinatesystem for asolid region Choose Angle and entera valuein degreesfortheadditionalrotation Abaqus CAE appliestheadditionalrotation if any and displaysthe resultingrebarreferenceorientationappliedtotheregion Click OKinthedialogbox For informationon relatedtopics click anyofthefollowing items Creating andediting sections Section12 12Chapter6 Selecting objectswithin theviewport Controlling datumdisplay Section76 9 Shell elements overview Section28 6 1oftheAbaqus AnalysisUser s Manual63 2 Creating discrete fields TheDiscreteFieldtoolset isavailable inthePropertymodule Interaction module and Loadmodule Select ToolsDiscreteFieldto createa discretefield To createadiscretefield From themain menubar select ToolsDiscreteFieldTip You canalso clickCreate inthe DiscreteField Manager In theName textfield enteraname forthe discretefield For informationon namingobjects see Using basicdialogboxponents Section3 2 1 In theDescription textfield enteradescription forthe discretefield Choose Elementsor Nodesto specifythetypeof locationtowhichthe fieldwillbeapplied Choose thedata type Choose Scalarto enterscalar fielddata The Orientationoptionisavailable forfields associatedwith elements Choose Orientation and dothefollowing Choose thecoordinatesystemtype Cartesian Cylindrical or Spherical Toggle onSupplied orientation directions are defined inpart spacetospecifythat theorientation directionsare definedat thepartorpart instancelevel When youdefine theorientations inthepartspace Abaqus transformstheorientationvalues fromthepart s coordinatesystem intotheassemblycoordinatesystemusingthepart