Analysis of a Deep Single Edge Notch Crack in a Plate.docx
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AnalysisofaDeepSingleEdgeNotchCrackinaPlate
AnalysisofaDeepSingleEdgeNotchCrackinaPlate
Thisexampledemonstratestheuseofthe"deepcrack"capabilityinZENCRACKwithbothsidesofthecrackmodelled.Inthistypeofanalysis,inadditiontoinsertingcrack-blocksintothemesh,ZENCRACKseparatesotherstandardelementstoformpartsofthecrackface.
Theexampleconsistsofasimplemeshofasquareplateunderprescribedendloading(displacementboundarycondition).Thefullplateismodelledeventhoughthegeometryandloadingissymmetric.AschematicofthegeometryandloadingisshowninFigureQA16-1.
FigureQA16-1-Squareplatewithsingleedgenotch
F.E.MeshfortheUncrackedComponent
ThefiniteelementmodelfortheuncrackedcomponentisshowninFigureQA16-2.Themeshconsistsofa4x4x1gridofelements.Thecrackistobeinsertedbyreplacingelements7and11.ThenodesusedtodefinecrackorientationforeachoftheseelementsareshowninFigureQA16-3.
Toextendthecrackfacesoutsidethecrack-blocks,itisrequiredthatelements8and12aresplit.
ABAQUSInputDeckfortheUncrackedComponent
TheABAQUSinputdeckfortheuncrackedcomponentisgiveninlisting1.Thefollowingpointsshouldbenoted:
1.Properties
ThematerialpropertynameZCRMAThasbeenusedtoallowZENCRACKtoextractYoung’smodulusandPoissonratiofromtheuncrackedmesh.
ZENCRACKInputandOutput
TheZENCRACKinputfileisshowninlisting2.Theanalysisoutputfileisshowninlisting3.
Thefollowingpointsarespecifictothe"deepcrack"definition:
Inputrecord3:
2220.25101
Item7,ISPLIT,issetto1toindicatethatonesplitsetistobedefined.
Inputrecord3c:
1
Thisindicatesthatthereis1elementpairinthesplitset.
Inputrecord3d:
812
Thisindicatesthatelements8and12aretobesplit.
FigureQA16-2-Uncrackedmesh-elementnumbers
FigureQA16-3-Uncrackedmesh-element7and11
Nodesforcrackfrontorientation
FigureQA16-4-Crackedmesh
FigureQA16-5-Crackedmesh-displacedplot
FigureQA16-6-Crackedmesh-"lowerleft"region-displacedplot
LISTING1
File:
a16uc01.inp
Description:
ABAQUSinputfileforuncrackedcomponent
*HEADING
QA16-4x4x1mesh
*PREPRINT,ECHO=NO,HISTORY=NO,MODEL=NO
*RESTART,WRITE
*ELEMENT,TYPE=C3D20,ELSET=EALL
1127626273231126127128129130131132
133134135136137
2238727283332384376385127386380387
131135381383136
3349828293433373374375376377378379
380381382371383
44510929303534388389365374390391368
378382392372371
52627323151525756130131132133302213224
303402403404405
62728333252535857386380387131211203212
213403419421404
72829343353545958377378379380200201202
203419420417421
82930353454556059390391368378219220192
201420422418417
95152575676778281302213224303238216227
239304217218230
105253585777788382211203212213214207215
216217208210218
115354595878798483200201202203204205206
207208209198210
125455605979808584219220192201221222195
205209223199198
1376778281101102107106238216227239240241242
243244245246247
1477788382102103108107214207215216294290295
241245291293246
1578798483103104109108204205206207287288289
290291292285293
1679808584104105110109221222195205296297282
288292298286285
*NODE
10.00000.00000.0000
22.50000.00000.0000
35.00000.00000.0000
47.50000.00000.0000
510.00000.00000.0000
60.00002.50000.0000
72.50002.50000.0000
85.00002.50000.0000
97.50002.50000.0000
1010.00002.50000.0000
260.00000.00002.5000
272.50000.00002.5000
285.00000.00002.5000
297.50000.00002.5000
3010.00000.00002.5000
310.00002.50002.5000
322.50002.50002.5000
335.00002.50002.5000
347.50002.50002.5000
3510.00002.50002.5000
510.00000.00005.0000
522.50000.00005.0000
535.00000.00005.0000
547.50000.00005.0000
5510.00000.00005.0000
560.00002.50005.0000
572.50002.50005.0000
585.00002.50005.0000
597.50002.50005.0000
6010.00002.50005.0000
760.00000.00007.5000
772.50000.00007.5000
785.00000.00007.5000
797.50000.00007.5000
8010.00000.00007.5000
810.00002.50007.5000
822.50002.50007.5000
835.00002.50007.5000
847.50002.50007.5000
8510.00002.50007.5000
1010.00000.000010.0000
1022.50000.000010.0000
1035.00000.000010.0000
1047.50000.000010.0000
10510.00000.000010.0000
1060.00002.500010.0000
1072.50002.500010.0000
1085.00002.500010.0000
1097.50002.500010.0000
11010.00002.500010.0000
1261.25000.00000.0000
1272.50001.25000.0000
1281.25002.50000.0000
1290.00001.25000.0000
1301.25000.00002.5000
1312.50001.25002.5000
1321.25002.50002.5000
1330.00001.25002.5000
1340.00000.00001.2500
1352.50000.00001.2500
1362.50002.50001.2500
1370.00002.50001.2500
1928.75002.50005.0000
1958.75002.50007.5000
1987.50002.50006.2500
19910.00002.50006.2500
2006.25000.00005.0000
2017.50001.25005.0000
2026.25002.50005.0000
2035.00001.25005.0000
2046.25000.00007.5000
2057.50001.25007.5000
2066.25002.50007.5000
2075.00001.25007.5000
2085.00000.00006.2500
2097.50000.00006.2500
2105.00002.50006.2500
2113.75000.00005.0000
2123.75002.50005.0000
2132.50001.25005.0000
2143.75000.00007.5000
2153.75002.50007.5000
2162.50001.25007.5000
2172.50000.00006.2500
2182.50002.50006.2500
2198.75000.00005.0000
22010.00001.25005.0000
2218.75000.00007.5000
22210.00001.25007.5000
22310.00000.00006.2500
2241.25002.50005.0000
2271.25002.50007.5000
2300.00002.50006.2500
2381.25000.00007.5000
2390.00001.25007.5000
2401.25000.000010.0000
2412.50001.250010.0000
2421.25002.500010.0000
2430.00001.250010.0000
2440.00000.00008.7500
2452.50000.00008.7500
2462.50002.50008.7500
2470.00002.50008.7500
2828.75002.500010.0000
2857.50002.50008.7500
28610.00002.50008.7500
2876.25000.000010.0000
2887.50001.250010.0000
2896.25002.500010.0000
2905.00001.250010.0000
2915.00000.00008.7500
2927.50000.00008.7500
2935.00002.50008.7500
2943.75000.000010.0000
2953.75002.500010.0000
2968.75000.000010.0000
29710.00001.250010.0000
29810.00000.00008.7500
3021.25000.00005.0000
3030.00001.25005.0000
3040.00000.00006.2500
3658.75002.50000.0000
3688.75002.50002.5000
3717.50002.50001.2500
37210.00002.50001.2500
3736.25000.00000.0000
3747.50001.25000.0000
3756.25002.50000.0000
3765.00001.25000.0000
3776.25000.00002.5000
3787.50001.25002.5000
3796.25002.50002.5000
3805.00001.25002.5000
3815.00000.00001.2500
3827.50000.00001.2500
3835.00002.50001.2500
3843.75000.00000.0000
3853.75002.50000.0000
3863.75000.00002.5000
3873.75002.50002.5000
3888.75000.00000.0000
38910.00001.25000.0000
3908.75000.00002.5000
39110.00001.25002.5000
39210.00000.00001.2500
4020.00000.00003.7500
4032.50000.00003.7500
4042.50002.50003.7500
4050.00002.50003.7500
4177.50002.50003.7500
41810.00002.50003.7500
4195.00000.00003.7500
4207.50000.00003.7500
4215.00002.50003.7500
42210.00000.00003.7500
*NSET,NSET=BASE
12345678910126127128129365373
374375376384385388389
*NSET,NSET=TOP
101102103104105106107108109110240241242243282287
288289290294295296297
*NSET,NSET=FIX1
5156
*NSET,NSET=FIX2
51
*NSET,NSET=NOUT
BASE
TOP
FIX1
FIX2
*ELSET,ELSET=EOUT
1
*MATERIAL,NAME=ZCRMAT
*ELASTIC
200000,0.3
*SOLIDSECTION,ELSET=EALL,MATERIAL=ZCRMAT
*BOUNDARY
FIX1,1
FIX2,2
*STEP
*STATIC
*BOUNDARY
TOP,3,3,0.01
BASE,3,3,-0.01
*ELPRINT,ELSET=EOUT
*NODEPRINT,NSET=NOUT,TOTAL=YES
RF
*ENDSTEP
LISTING2
File:
a16c05.zcr
Description:
Inputfileforanalysisoftheinitialconfiguration
#
#ZENCRACKQ.A.Example#16
#
#Uncrackedmesh:
a16uc01.inp
#Jobid:
a16c05r
0103200
2220.25101
st111x5.sup
75453
st111x5.sup
115958
1
812
0.50.5
0.50.5
1
0
01
1
LISTING3
File:
a16c05r.rep
Description:
Outputfileforanalysisoftheinitialconfiguration
****************************************************************************
**
*ZENCRACKisproprietarysoftwareof:
*
**
*ZENTECHINTERNATIONALLTD.,*
*103MytchettRoad,*
*Mytchett,*
*Camberley,*
*Surrey,*
*GU166ES,*
*GREATBRITAIN*
*Tel.(+44)1252376388*
*Fax.(+44)1252376389*
*E-mailinfo@zentech.co.uk*
*Webhttp:
//www.zentech.co.uk*
**
****************************************************************************
**
*Thefollowingsystemhasbeenlicensed:
*
**
*Program:
ZENCRACK*
*Version:
6.0*
*Releasedate:
09-NOV-1998*
*Licensetype:
Commercial*
*Interfaceto:
MARC&ABAQUS*
**
*Thissystemislicensedto:
*
**
*Company:
ZentechInternationalLimited*
*Address:
103MytchettRoad*
*Camberley*
*SurreyGU166ES*
*U.K.*
*Phone:
+441252376388*
*Fax:
+441252376389*
*Computer:
PC*
**
****************************************************************************
**
*.zcrinputfileforanalysis:
*
*E:
\zencrack\qa16\a16c05*
**
*Dateofanalysis(D-M-Y):
21-11-1998*
*Starttime(H-M-S):
15:
18:
4