基于ABAQUS的重力活塞取样器理论分析与研究.pdf

《基于ABAQUS的重力活塞取样器理论分析与研究.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、机床与液压Dec．20l3HydromechatronicsEngineeringVoI．4lNo．24DOI：10。3969／j．issn．1001-3881。2013。24．O18AnalysisandResearchontheGravityPistonCorerTheoryBasedonABAQUSxuJian，MENGGuangyaoSchoolofMechanicalEngineering，QingdaoTechnologicalUniversity，Qingdao266033，ChinaAbstract：Theproc

2、essofgravitypistoncorerpenetratingintosedimentwasanalyzedandthein。fluencefactorsforthisprocesswerecomprehensivelydiscussed．Thesamplerpenetrationdepththeo~modelwasestablishedandthecalculationequationofpenetrationdepthwasobtained．BasedontheABAQUSfiniteelementsoftware，th

3、esamplerpenetrationprocesswasnumericallyanalyzed．Thetheoreticalmodelwasverifiedbytheexperimentaldatafrom20m-gravitypistonsamplerdeepseasedimentsamplingexperimentstakenbyFirstInstituteofOceanographyStateOceanicAdministration．Therefore，thispaperprovidesapowerfultheo@whi

4、chsupportsforthefurtherstudyofabyssalgravitypistonsampler，Keywords：gravitypistonsampler，theo~model，influencefactors，finiteelementsimulation[4]，whichiswidelyusedinthesedimentsampling1．Introductionofthedeeperlakes，oceansandotherplaces．Itmainlyconsistsofropefixture，relea

5、ser，strippingThe21stcenturyisthecenturybelongingtothetubehead。andrudder，attachedlcadweights，COD_一oceanonmarinescientificinvestigation，andthenectingflange，samplingtube，seal，andattachedstudyofseafloorsedimentsbecomesthefocusofma—hammerandsoon．asshowninFig．1．rineresearch

6、[1]．China’sseabedsamplingequip—mentisgenerallymodeledontheRussianequipmentandsamplingdepthisusuallylessthan20m[2]．WiththedevelopmentofChina’sMarinePrograms．presentsamplingdepthcannotsatisfythetaskoftheexpedition．Duetothelatestartofthedevelopmentandutilizationofocean，t

7、hemarineseabedsamplingisgenerallymodeledontheforeigncorers．Thetheo—reticalresearchandexperimentalvalidationofseabedsamplingdesignseriouslyrestrictsthedevelopmentFig．1CompositionofthegravitypistoncorerandutilizationofmarineinChina[3]．1．2．Gravitypistoncorerworkprocess1．

8、1．Thesummarizationandcompositionofgrav-itypistoncorerTheworkprocessofagravitypistoncorerisdi—videdintofoursteps：overalldown，