: [1, 8.3] [2, 54]; [6, 2.24].
1. ()? ? 2. (, ) ()?
: [3] 6.25, 6.27, 6.28; [4] ( ) 196, 198, 200; [5] 7.19, 7.20, 7.22.
23.
: [1, . IX, 9.19.4] [2] . X, 5559]; [6, . X].
1. ? 2. ? 3. ? ? 4. ? 5. ? 6. ? 7. ? 8. ?
: [3] 7.1, 7.3, 7.6, 7.7, 7.13, 7.16, 7.21; [4] ( ) 208, 213, 215220, 226, 227; [5] 8.1, 8.4, 8.7, 8.12, 8.13, 8.15, 87.
24. ,
: [1, . X, 10.1, 10.2, 10.4] [2, . XI]; [6, 2.28].
1. ? , . 2. ? 3. ? 4. ? 5. ? 6. ? ? 7. ? 8. ( ) ?
25.
: [1, . XI]; [6, ' 2.27].
1. ? 2. , , , ? 3. ?
26.
: [1, . XII] [2, . XII]; [6, 2.29].
|
|
1. ? 2. ? 3. ? 4. ? 5. ? 6. ?
: [3] 8.1, 8.2, 8.8, 8.18; [4] ( ) 237, 238, 241, 242; [5] 9.5, 9.6, 9.119.13, 9.17.
27.
: [1, . XIII ]; [6, 2.30].
1. ? 2. , ? 3. , ?
: [3] 9.219.23, 9.31. 9.37, 9.42; [4] ( ) 252254, 263, 266; [5] , 10.2, 10.8, 10.12, 10.20.
16. 9. ( ), , . (. 29),
": Nz , Qx Qy , Mz , . 10. a) NZ = F; 6)NZ = F = = F * h/2; ) NZ = F, MX = F*h /2 = F*b/2; r) Qy = F, Mx = Fl; ) QV = F, Mx = Fl Mz = F b/2; e) Mz = Fb. 12. Nz , Qx, Qy Mz.
17. 6. ∆ l = Nl/ , = π d²/4, : ) ∆l1 = 8∆ l; ) ∆ l 2 = 0,5∆ l. 10. σ, σ σ02. 17. , , . 19. I 2 , 3 .
19. 20. (Jp= π d4 /32), (W =π d3 /16). 21. 16 , .