46D混凝土泵車臂架振動(dòng)實(shí)驗(yàn)分析及管道應(yīng)力計(jì)算.pdf

1、華中科技大學(xué)碩士學(xué)位論文46D混凝土泵車臂架振動(dòng)實(shí)驗(yàn)分析及管道應(yīng)力計(jì)算姓名：譚曲申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：胡元太201102華中科技大學(xué)碩士學(xué)位論文華中科技大學(xué)碩士學(xué)位論文IIAbstractThetruckmountedconcretepumpisadedicatedconstructionmachinerytotransptcastconcrete.Ftheadvantagesofhighautomatization

2、highspeedofcastingconcretegoodpropertyofenvironmentalprotectionhighqualityofcastingconcretelowcostoflabithasbeenwidelyusedinmanyconstructionsites.AsthekeywkingpartsoftruckmountedconcretepumpBoomstructureiscomplexthefceon

3、itisvariedtherefeitsperfmancewilldirectlyaffectthequalityefficiencyofthevehicle.Inthecourseofpracticalwktheboomstructurehastheproblemofexcessivevibrationoftheenddamageofthepipesuppt.FsuchsituationthispaperstudySANYCompan

4、y’s46meterboomsystemoftruckmountedconcretepump.Thestudyisputfwardinthreeareasincludingtheeticalanalysisexperimentaltestingfiniteelementsimulation.ThenIobtainthemainreasonwhichcausethesetwoproblemsproposethecrespondingopt

5、imizationscheme.Inthecourseoftheeticalderivationtheappropriatetheysimplifiedmodeloftheboomsystemisproposed.Imaketheeticalmodalanalysisoftheboomwiththeanalysismethodsoftheeticalmechanicsmechanicsofmaterials.ThenIgetthenat

6、uralfrequencyvibrationmodeoftheboominitially.InthecourseofexperimentaltestIidentifythekeymodesoftheboombytestingthetruckmountedconcreteinconstructionsitesfmanytimes.ThenIanalyzethefrequenciesvibrationmodescomparetheresul

7、tswiththetheeticalderivationfindthekeyfactsofexcessivevibrationofendoftheboom.InthecourseoffiniteelementsimulationIestablishthesolidmodelingofthetruckmountedconcretemaketheStrengthanalysismodalanalysisoftheboomwithfinite

8、elementsoftwareLSDYNA.Stressdistributionoftheboomisshowedinstrengthanalysis.ThenIidentifythelocationoftheboompronetodamage.Theresultofmodalanalysisiscomparedwiththeeticalanalysisexperimentalresultssothereasonofexcessivev