天津理工大学理论力学理力04ppt课件

1、cosFxF cosFyFcosFzF sinFyxFcossinFxF cosFzF sinsinFyFxFxFxFiRyFyFyFiRzFzFzFiRiRFFRyRFFjF),cos(RzRFFkF),cos(RFxFiRF),cos(222()()()RxyzFFFF0RF0 xF 0yF 0zF 0300 xF045sin45sin21FF0yF030cos45cos30cos45cos30sin21FFFA0zF030cos30sin45cos30sin45cos21PFFFAkN54. 321 FFkN66. 8AF( )OMFrFrxiyjzkxyzFF iF jF k( )()

2、() ()OxyzMFrFxiyjzkF iF jF k()()()xyxzyxyFzF izFxFjxFyF k( )OMF( )ozyxMFyFzF ( )oxzyMFzFxF ( )oyzzMFxFyF ( )()zoxyxyMFMFFh 0yzFzFy zyFyFz( )()()()xxxxyxzMFMFMFMF( )()()()yyxyyyzMFMFMFMF0 xzFzFx xzFzFx ( )()()()zzxzyzzMFMFMFMF0 xyFyFx yxFxFy ( )( )ozyxxMFyFzFMF ()()oxyyMFzFxFMF( )( )oyzzzMFxFyFMF ,al

3、FFMFMFMzyx,cosalFFMxcosFlFMysinlFFMzF1212FFFFBAMrFBAMrF( ,)( )( )oooABM F FM FM FrF rF FF ( ,)()oABMF FrrFM 111),(FrFFMBA(,)RRBARM FFrF 12()BArF F12BABArFrF111(,)BArFM F F211FFF332FFF111222,.,nnnMrF MrFMrFMiMMRiFFMMixcosMMiycosMMizcos0ixM0iyM0izM,xixyiyzizMMMMMM222()()()xixiyizMMMM0M iiFF()ioiMMF( )

4、,( ),( )xyzMFMFMF()()()oxyzMMF iMF jMF k()oioiMMMFRiixiyixFFF iF jF k 0,0ROFM 0,0,ROROFMFMORMdF()( )OROROMdFMFMF0,0,RORFMFOM0,0ROFM sinORMdF0,0ROFM 0,0,ROROFMF M,ROFM000zxyFMM000 xyzFFF000 xyzMMMmN1 .19345cos545cos43MMMixMxMmN802MMMiyymN1 .19345cos45cos541MMMMMizz,2000NF,212FF ,60,3021,FFBzBxAzAxFFF

5、FFFF,21 0zF 0yF060sin30sin21BxAxFFFF00 0zF060cos30cos21BzAzFFFFF 0FMx040020020060cos20030cos21BxFFFF 0FMy0212FFDRF 0FMz040020060sin20030sin21BxFFF,6000,300021NNFF,9397,1004NNAzAxFF,1799,3348NNBzBxFF 0FABM 0FMAE 0FMAC 0FMEF026PaaF26PF 05F022216baabFPaaF04F01F 0FMFG022bFPbFbPF5 . 12 0FMBC045cos232bFPb

6、bFPF223045sin45sinOCOBFF045cos45cos45cosOAOCOBFFF045sinPFOAN1414OAFN707OCOBFF0 xF 0yF 0zF iiCPyyP1122.CnniiP yP yPyPyP z iiCPxxP1122.CnniiP xP xP xP xP x 1122.CnniiP zP zP zP zP z iiCPzzPiiCPxxPiiCPyyPiiCPzzPiiCV xxPiiCV yyPiiCV zzPiiCAxxAiiCA yyAiiCAzzAcosll sincoshxxCClHsinlHl22cosrzhC22211CFFzrlHPH2CFxlP1CP xF l1CFxlPmm151xmm451y21300mmAmm52xmm302y22400mmAmm153xmm53y23300mmAmm2321332211AAAxAxAxAAxAxiiCmm27321332211AAAyAyA