基于FEPG有限元分析系統(tǒng)的地震波傳播的數(shù)值模擬.pdf

1、Y82011Bn女q一“⑧研究生學(xué)位論文基于FEPG有限元分析系統(tǒng)的地震波傳播的數(shù)值模擬王葑孟凡焉教授mⅧⅫ碩士“地球攆蔫與信息技術(shù)＆in罅咭年6旦111㈣日』墮型墜旦中國海洋大學(xué)薹蘭!!!魚童堅(jiān)垂坌塹墨墮箜些墾墊堡堡塑塑堡堡墊——————————～ThenumericalsimulationofseismicwavepropagationbasedOnFEPGfiniteelementanalysissystemAbstractThe

2、numericalsimulationofseismicwavefieldisaneffectiveauxiliarymeansforresearchingontheacquisition，processingandinterpretationofseismicdataincomplexareaThemainmethodsofnumericalsimulationofseismicwavefieldarewaveequationmeth

3、odandgeometryraytracingmethodThemethodofwaveequationnumericalsimulationissolvingseismicwaveequations，SOtheseismicwavefieldsimulatedwiththismethodincludesalltheinformationofseismicwavetravelingTheabundantinformationcallsu

4、pplymoreevidencesforresearchingOnmechanismoftransmissionofseismicwaveandinterpretationofcomplexstratumSothewaveequationmethodisaveryimportantmethodofseismicforwardmodelingThemainnumericalsimulationmethodsofseismicwaveequ

5、ationhavefiniteinferencemethod，finiteelementmethod(FEM)，reflectivitymethodandFourierpseudo—spectrummethodThesemethodsarealthaveadvantageanddisadvantageInthispaperusingFEMmethodtonumericalsimulatetheelasticwaveequationThe

6、primaryadvantageofFEMisthatitissuitableforsimulatinganyshapeofgeologicbodyandarbitrarytriangleapproximatingstratuminterfaceSoitcanguaranteethefidelityofsimulationofcomplexstratuminterfaceButthedisadvantagesofFEMarethatit

7、requiresmassmemoryandthatdifferentboundaryconditionshavetobesettomeetdifferentresearchrequirementsInthispaperFEPGfiniteelementanalysissystemisadoptedFiniteelementcalculationprogramisgeneratedautomaticallybydifferentialeq