太阳翼展开过程中锁定冲击载荷研究(英文)

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1、第2l卷第1期航天器工程Vo1．21No．I2012年2月SPACECRAFTENGINEERING31StudyonLatch—upImpactLoadsDuringSolarWingDeploymentZHANGZhijuanYUANGuangzhiZOUYuanjie(BeijingInstituteofSpacecraftSystemEngineering，Beijing100094，China)Abstract：Acommondeploymentandlatch—upanalysismodelforatypicalsolarwingi

2、sbuilt，whichcombinestheFE(finiteelement)modelswithNASTRANandthemuhibodydeploymentandlatch～upmodelwithADAMS．Animprovedmethodispresentedtobuildthehingemodels，whichintroducesalltheimportantstiffnessparametersofhinges．Finallytheeffectsofcertaincomputationparametersonlatch—upimpa

3、ct1oadsareinvestigated，including：(a)thenumberofmodestranslatedfromFEmodeltomultibodymodel，(b)analysisstepsize，(c)stiffnessofthehingeand(d)modaldampingratio．TheresultsshowthatanadequatenumberofmodesandasmallstepsizeshouldbeconsideredinordertOgetareasonableresult．andthatthesma

4、llerdampingratioisrecommendedtobeappliedinthecomputationinordertogainconservativede—signloads．Besides，ifvarioushingestiffnessvaluesareobtainedinthegroundtest，thebiggestoneshouldbechosentogetaconservativeimpactresponse．Itisconcludedthatthegener杰alde—ploymentandlatch—upanalysi

5、smodelforsolarwingspresentedinthispapercanobtainmoreac——curateimpactresultsandbeeasilyapplied．Keywords：solarwing；deployment；latch—up；impactload；flexiblemultibodysystem太阳翼展开过程中锁定冲击载荷研究张志娟苑广智邹元(北京空问飞行器总体设计部，北京100094)摘要针对一类典型太阳翼，采用NASTRAN和A】)S软件建立了太阳翼展开锁定通用分析模型；提出了一种改进的铰链建模方法，能

6、够考虑铰链的所有重要刚度系数；最后，研究了有限元模型导入柔性多体模型的模态数、计算步长、铰链刚度和模态阻尼等参数变化对锁定冲击载荷的影响。通过分析可知，计算时需选取足够多的模态数及足够小的计算步长，还要采用较小模态阻尼，以得到冲击载荷的保守设计值。此外，地面试验得到多组刚度测试结果时，应选取最大刚度试验值，以得到保守结果。研究表明，文章采用的太阳翼展开锁定模型能够得到更准确的冲击载荷结果，并易于实施。关键词太阳翼；展开；锁定；冲击载荷；柔性多体系统中图分类号：V443文献标志码：ADOI：10．3969／j．issn．1673—8748．2O1

7、2．01．005text)ingenera1．Thepanelsareconnectedbyhinges1Intr0ductionandfoldedupatonesideofthesatelliteduringlaunch．Atthebeginningoftheoperationphaseofthesatel—Afold-upsolarwing[]consistsofoneyokeandlite，thehold—downmechanismisreleased；thepanels3-5solarpanels(“panel”forshortinth

8、efollowingaredeployedbytheoperationofthedeploymentand收稿日期：201109—26；修回日期：20