第四章 杆件的变形计算

1、材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 第四章第四章 杆件的变形计算杆件的变形计算 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 lll 1 l l E A FN EA lF l N 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋

2、斗不息生命不止，奋斗不息 EA lF l N 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 l xEA xF l )( d N n i i ii EA lF l 1 N 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 b bb b b 1 )1 (2 E G 材料力学 Mechanics of Materials Cease to stru

3、ggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 BCAB lll 1 N EA lF l ABAB AB 80010200 4001040 3 3 1 . 0 mm167. 0 24010200 4001020 3 3 2 N EA lF l BCBC BC 067mm. 0167. 01 . 0 BCAB lll 材料力学 Mechanics of Materials Ce

4、ase to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 030sinFFAC80kN2FFAC 030cos ACBC FFkN340 BC F 材料力学 Mechanics of Mat

5、erials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 11 1 AE lF CCl ACAC AC 96010200 cos30/10001080 3 3 481mm. 0 22 2 AE lF CCl BCBC BC mm277. 0 500021001 100010304 3 3 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 0.277mm 2 CCCx 44mm. 1 cot30s

6、in30/ 21 CCCCC y 47mm. 1 22 xy CCC 0.278mm x C 44mm. 1 y C 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 第二节第二节 圆轴的扭转变形及相对扭转角圆轴的扭转变形及相对扭转角 x GI M p x dd p x GI M x d d p GI p GI 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命

7、不止，奋斗不息 p x GI M x d d l p x x GI M 0 d p x GI M p x GI lM n i pi ixi GI lM 1 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 pAB xAB AB GI M 32 0.06 1080 1400 4 9 m/01375r

8、ad. 0 pBC xBC BC GI M 32 0.04 1080 800 4 9 m/03978rad. 0 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 CBDCDB p CBxCB p DCxDC GI lM GI lM 180 1 3 180 GIp Ma a GIp M 540 材

9、料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 a GIp M 540 pp I Md I d M 2 3 2 max max pp I Md I d M 2 3 2 max max 4001080 1080403 540 2 3 3 a GI I d p p 81MPa.69 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 p BABA p

10、CBCB AC GI lM GI lM 180 p GI Ma7 180 33. 2 3 7 DB 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 )( 1 xfw )( 2 xf 材料力学 Mechanics of Materials Cease to struggle and you cea

11、se to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 x y w d d tan tan tan d d x y w 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 z EI M 1 z EI xM x )( )( 1 2/32 )1 ()( 1 w w x 1)1 ( 2 w w x

12、)( 1 z EI xM w )( 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 z EI xM w )( z EI xM w )( 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 z EI xM w )( CxxMwEIEId)( z DCxxxxMwEI d)d)( z 材料力学 Mechanics of Materials Cease

13、 to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 CxxMEId)( z DCxxxxMwEI d)d)( z 0 x0| 0 x w0| 0 x 0 x 0| 0 x w0| 0 x lx 0| lx w0| lx 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 CxxMEId)( z DCxxxxMwEI d)d)( z 021 | xax ww 021 | xax 材料力学 Mechanics of M

14、aterials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 B B w 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 )()(lxFxM )()(lxFxMwEI ClxFCxlxFwEIEI 2 )( 2 1 d)( DCxlxFDxCxlxFwEI 32 )( 6 1 d)( 2 1 材料力学 Mechanics of Materials Cease to struggle and y

15、ou cease to live. 生命不止，奋斗不息生命不止，奋斗不息 ClxFCxlxFwEIEI 2 )( 2 1 d)( DCxlxFDxCxlxFwEI 32 )( 6 1 d)( 2 1 0 x0 A 0 A w 0 2 1 2 CFl0 6 1 3 DFl 2 2 1 FlC 3 6 1 FlD EI Fl EI lxF 22 )( 22 EI Fl EI xFl EI lxF w 626 )( 323 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 E

16、I Fl EI lxF 22 )( 22 EI Fl EI xFl EI lxF w 626 )( 323 EI Fl B 2 2 EI Fl wB 3 3 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 l Fb FA l Fa FB 11 x l Fb M )0( 1 ax )( 222 a

17、xFx l Fb M)( 2 lxa 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 11 x l Fb wEI 1 2 11 2 Cx l Fb EI 111 3 11 6 DxCx l Fb EIw )( 222 axFx l Fb wEI 2 2 2 2 22 )( 22 Cax F x l Fb EI 222 3 2 3 22 )( 66 DxCax F x l Fb EIw 材料力学 Mechanics of Materials Cease to strug

18、gle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 1 2 11 2 Cx l Fb EI 111 3 11 6 DxCx l Fb EIw 2 2 2 2 22 )( 22 Cax F x l Fb EI 222 3 2 3 22 )( 66 DxCax F x l Fb EIw 0 1 x0 A wlx 0 B w axax 21 | 21 axax ww 21 | 21 0 21 DD)( 6 22 21 bl l Fb CC 材料力学 Mechanics of Materials Cease to struggle and you cease t

19、o live. 生命不止，奋斗不息生命不止，奋斗不息 )3( 6 222 11 lbx l Fb EI 1 223 11 )( 6 xlbx l Fb wEI 2 2 222 12 )( 3 )3( 6 ax b l lbx l Fb EI 3 22 222 22 )()( 6 ax b l xlbx l Fb wEI lx 2 EIl alFab B 6 )( ba EI blFb wl 48 )43( 22 2 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料

20、力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 2/ 2 qlM 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 CMCqC www EI Ml 16 2 CM w EI ql 384 5 4 Cq w EI ql EI Ml EI ql 384 17 16384 5 424 AMAqA AM EI Ml 3 Aq EI ql 24 3 EI q

21、l EI Ml EI ql 24 5 324 33 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 材料力学 Mechanics of Materials Cease to struggle and you cease to live. 生命不止，奋斗不息生命不止，奋斗不息 CCB l wwtan 2 CB CC tan CCB l ww 2 EI ql EI l q 1288 ) 2 ( 4 4 C w EI ql EI l q 486 ) 2 ( 3 3 C EI q