固定式起重機支承圓筒回轉(zhuǎn)制動過程的動力學(xué)分析.pdf

1、武漢理工大學(xué)碩士學(xué)位論文固定式起重機支承圓筒回轉(zhuǎn)制動過程的動力學(xué)分析姓名：張兵申請學(xué)位級別：碩士專業(yè)：機械制造及其自動化指導(dǎo)教師：李勇智郭建生20090501武漢理下大學(xué)碩十學(xué)位論文AbstractThesupportingcylinderofthefixedcraneisoneoftheimportantloadingpartswhenthecraneworks，itsmechanicalcapabilityhasdirectinfl

2、uencetothenormaloperationofthewholemachineDothestaticcalculationsforsupportingCylinderthemaximumloadsthatmayoccurinavarietyofworkingconditionsaretakenintoaccount，theintensityandmeettheneedofdesignthesupportingcylinder’Ss

3、trength，stiffnessmeettherequirementsHoweverfeedbackfromtheportsindicatesthatintheconditionsofafixedcrane’shoistingthecargosuddenlyfromthegroundorsuddenlyunloadingintheair，therevolvingsystemandLuffingsystem’Ssuddenlybraki

4、ngorjump—starting，thesupportingcylinderwillvibrationobviouslywithlargeamplitudeInthestrengthcalculation，thisdistinctdynamiceffectisreplacedbysafelycoefficientThetreatmentoftransformingacomplicateddynamicsystemintoasimple

5、andmanmadestaticsystemCan’treflecttheessenceoftheproblemaccuratelyIntheanalysisandcalculation，thetransformingthedynamicproblemintoastaticproblemismainlyduetothecausationandinfluencefactorsofthedynamicloads’emergenceiscom

6、plex，anditisdifficulttofitthedynamicloadsAimataboveproblems，thispapertakesthetheGQ4525fixedcrane’Ssupportingcylinderasaasanexample，basingonfiniteelementanalysisandmechanicaldynamicsUtilizingANSYS100tostudythedynamicchara

7、cteristicsofthesupportingcylinderandthethelawofdynamicresponseThemainresearchisasfollows：(1)AccoddingtotheconfigurationandworkingprincipleofthefixedcraneusingthefiniteelementanalysissoftwareANSYStoestablishsthemodeofmach

8、ineandmakingthestaticanalysisundertheconditionsoffullloadsCombiningwiththecranestructuretheorytoanalyzetheresults(2)Studyingthedynamicscharacteristicsofthefixedcrane，makingthemodalanalysisofthemodel，extractingthefirst4na