双梁桁架式龙门起重机主梁优化设计及模态分析

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1、西南交通大学硕士学位论文双梁桁架式龙门起重机主梁优化设计及模态分析姓名：庞延波申请学位级别：硕士专业：机械电子工程指导教师：于兰峰20070401西南交通大学硕士研究生学位论文第Ⅱ页AbstractThiSthesiselaboratesthesituation．dynamicstateandthedirectionofthedevelopmentofthelogistiesequipmentdomesticandabroadcurrently，andtheimportantfunctionofthelogisticsequipmen

2、tinmodemmanufacturingindustqr．田地PaperalSOstudieSthepresentconditionofthetrussgantrycl'auehomeandabroad，andputforwardakindofoptimizationtothemaingirder,accordingtotheshortcomingsthatthemainbeamofthetrussgantrycraneisoverweighted,anditneeIdsmorematerials．Withtheincreasing

3、mamrilyandperfectionoffiniteelementsoftware,thefiniteelementmethodismoreandmoreappliedinstructuralanalysisofthegantrycrane．ThispaperanalyzesmaingirderofthetrussgantrycranewithANSYS，andcarryoutoptimizeddesign．Thevitalquestionsaresolvedinoptimizationprocessasfollows：1．Est

4、ablishingthetrussgirdergantrycrane’smathematicalmodeloftraditionaloptimumdesignandoptimizingthemaingirderwithMDODprocess．2．AccordingtOthetrussgantrycrane’sstructure，appropriatesimplifyingit,andestablishingparametricfiniteelementmodelwhichcanaccuratelyreflectsactualsitua

5、tion．3．Determiningthevaluerangeofdesignvariablesusingsensitivityanalysis，optimizingthemaingirderwithANSYSandfindingouttheoptimalsolutionofsectionparameters．4．Takethe10t-22mgirdergantrycraneforexample,carryingoutstaticanalysisandmodalanalysiswithANSYS．neresultsareconsist

6、entwiththeactualsituati∞．Thethesisismainlytodosomeimprovingandexploringtomodemdesignmethodoftrussgantrycrane．Theapplicationoftheoptimaldesignandfiniteelementanalysismustbecombinedwiththepracticeinthedesignoferane．Theresultneedsanalyzingandmodifyingnecessarilybecauseofth

7、edifferentworkingconditions．ThepaperCallprovideassistanceandreferenceforcranedesignwiththefiniteelementmethod．Keywords：Trussgantrycrane；Finiteelement；Optimization；Modalanalysis西南交通大学学位论文创新性声明本人郑重声明：所呈交的学位论文，是在导师指导下独立进行研究工作所得的成果。除文中已经注明引用的内容外，本论文不包含任何其他个人或集体已经发表或撰写过的研究成果

8、。对本文的研究做出贡献的个人和集体，均已在文中作了明确的说明。本人完全意识到本声明的法律结果由本人承担。本学位论文的主要创新点如下：(1)根据起重机设计规范建立桁架式龙门起重机主梁传统优化设计的数学模型，采用MDOD程序