基于ABAQUS的裂紋擴(kuò)展仿真軟件及應(yīng)用.pdf

1、浙江大學(xué)碩士學(xué)位論文基于ABAQUS的裂紋擴(kuò)展仿真軟件及應(yīng)用姓名：王慰軍申請學(xué)位級別：碩士專業(yè)：工程力學(xué)指導(dǎo)教師：陶偉明20060501ABSTRACTAtDresent，invariouskindsofengineeringproblemfrommechanlcalindustry，architecturalindustryandmicro—electronicpackage，erecrackswillappearbecauseoft

2、hematerial’sinherentflawOrtheloadsforcedonthemachineorequipmentduringtheprocessofserVlcebndersomecondition，thesecrackswillpropagate，whichcausestheu』tlmatefailureoftheequipmentandinsomecases，itcancausetheaccidentThusreach

3、ingoncracksanditspropagationbehaviorund8。certainconditiOnscanhelpprolongtheusinglifeoftheproduct，PreVenttheaopearanceoftheaccidentFurthermore，itcancontributetothedeslgnoftheproductandimprovethereliabilityofthedesigmBased

4、onthepresentdevelopmentstatusofFracturemechanl。8th。orY，NumericalmethodandFEAsoftware，inthispaperweuseFEAmethodtosimulatethepropagationofthecrackFirst，wedesigntheprogramiorsimulatingthepropagationofthecrackbasedontheplatf

5、ormofABAQUSand”0veits8bilityusingacomputationalexampleThedesignthoug，htofthesoftwareisasfollows：firstbasedonthepre—analysisresultmakesureifthecrackwillpropagateandobtainthepropagationangLe，thenbasedOnthepropagationlength

6、ensurethenewcracktipanduseautomatlcmeshgeneratiOninthisareaThroughthecracktiparea，usetheregularauadmeshtoensurethestress，inotherareas，usethetriangularmesn。Throughthecircularcomputation，thecracktipwillforwarduntilthestruc

7、turerupturesarstopcrackingBecauseofABAQUShasrichmaterialwarehouse，cells，variousanalysistypeandhighcomputationalefficiency，wecanusethissoftwaretoanalyzeelastic—plasticproblem，therIIlalmechanicalproblem，machine—electricalp