5.2.1.
5.2.1.1.
. 2.3 5.11. . 5.2.
. - () .
1. (2.1) :
.
2. , 2 12080 66. . 1 : dk = 32 ; l = 58 ; r = 2,0 ; f =1,6 .
3. , , (2.3) . 10 :
d = d + 2t = 32 + 22,5 = 37 .
d = 36 . l = 18 . ( : 10 , 58 , . 28 ).
4. . 421,5-7.05.05 11871-88 [1]. 40,376 . 10 .
l = 15 .
5. . d = 45 , . , 7000 . 7309 1 = 26 [1, 8].
6. . . .6: b = 10 , h = 8 , t1 = 5 , t2 = 3,3 . l = 50 .
7. (. 5.2) (. 2.2.2, . 2.5, 2.7):
= b1 + x = 56 + 3 = 59 ,
0,5 me = 0,55=2,5 , 3 .
= 59 .
8. L1 :
L1 ³ 2 = 259=118.
9. :
l1 = B1/ 2 + l + l + l / 2= 26/2 + 15 + 18 + 58/2 = 75 .
10. , .
5.2.1.2.
.
, 45 1050-88 σ = 560 (. 1.1, 1.2).
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:
σ -1 = 0,43 σ = 0,43560 = 241 ;
t-1= 0,5 s-1= 0,5241=120 .
:
,
[ s ] = 2; Ks = 2,2.
5.2.1.3.
, , . 5.3. . 5.9 , .
Fn φ = 40, Fnz Fny :
Fnz = Fn sin φ = 892 sin 40o = 573 ;
Fny = Fn cos φ = 892 cos 40o = 683 .
. 5.9. ,
-
5.2.1.4.
1. . 5.9 , (. 5.10, ).
2. , (. 5.10, ).
, :
∑ MA= 0; Fnzl1 + ZB L1 Ft1 (K + L1) = 0;
ZB = (Ft1 (K + L1) Fnz l1)/ L1,
ZB = (2410(59+118) 57375)/118 = 3250,8.
∑ M= 0; Fnz (l1 + L1) + ZA L1 Ft1K = 0;
ZA = ( Fnz (l1 + L1) + Ft1K)/ L1,
ZA = (573(75+118) + 241059)/118 =267,8.
: ∑ Z = 0;
Ft1 Fnz + ZB ZA = 2410 573 + 3250,8 267,8 = 0.
3. , , ͷ:
1: 1 =0;
2: 2 = - Fnzl1 = 57375 = 42975;
3: 3= - Fnzl1 = 57375 = 42975;
4: 4= -Ft1K = 241059 = 142190;
5: 5 = - Ft1K = 241059 = 142190;
6: 6 =0.
(. 5.10, ).
4. , (. 5.10, ).
:
∑ MA= 0; Fnyl1 + YBL1 + Fa1dm1/2 Fr1(K+L1) = 0;
YB = (Fnyl1 +Fr1 (K+L1) Fa1dm1/2)/ L1,
YB = (68375 +850(59+118) 21386,42/2)/118 = 1631,1 H.
∑ M= 0; Fnyl1+L1) + YAL1 + Fa1dm1/2 Fr1K = 0;
YA = (Fny (l1+L1) + Fr1K Fa1dm1/2)/ L1,
YA = (683(75+118) +85059 21386,42/2)/118 = 1464,1 H.
: ∑ Y = 0;
Fny YA + YB Fr1 = 683 1464,1 + 1631,1 850 = 0.
5. , , ͷ:
1: 1 =0;
2: 2 = Fnyl1 = 68375 = 51225;
3: 3 = Fnyl1 = 68375 = 51225;
4: 4 = Fa1dm1/2 Fr1K,
4 = 21386,42/2 85059 = -40946,3;
5: 5 = Fa1dm1/2 Fr1K,
5 = 21386,42/2 85059 = -40946,3;
6: 6 = Fa1dm1/2 = 21386,42/2 =9204.
(. 5.10, ).
6. , ͷ:
1: Σ1 =0;
2: 
;
3: 
;
4: 
;
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5: 
;
6: 
.
(. 5.10, ).
7. (. 5.10, ). , ͷ:
1 = 2= 3= 4 = 5= 6= 1
(. 5.10, ).
8. , ͷ:
1: 
;
2: 
;
3: 
;
4: 
;
5: 
;
6: 
.
(. 5.10, ).
9. , :
1: 
;
2, 3: 
;
4, 5: 
;
6: 
.
10. , (. 5.10, ).
, , 2-3 4-5 (.5.2.1.1).
421,5-7.05.05 11871-88, , . 3 . 44 .
:
d = d + 3,2 r = 45 + 3,22 = 51,4 ,
Ra 40 d = 53 .
( 2) . 9 .
, . 11 12 .
, , 7 /n 6.
L0 / k 6.
P9/h9. +0,2.
3,2 , 0,8 . , 1,6 . 12,5 . 3,2 , 6,3 . 6,3 .
. 5.11.
. 5.11.
5.2.3.
-
(. 5.10) (. 5.11) . ( » x = 13 ) (. 5.12, ).
5 =108400 ͷ, Σ5 = 147968 ͷ, .
( 1) (. 5.12, ). 1 =108400 ͷ, , .
2.4.1.
. 5.12. : - ; -
. 5.2.
5.2
| , | ||
| , 3: - - | 8941,6 17883,3 | - 5861,2 |
| , ͷ | ||
| , ͷ | ||
| , : - σ - τ | 16,55 3,03 | 9,25 |
| , : - σm - τm | 3,03 | 9,25 |
| . | ||
| : - σ - τ | 2,1 2,2 | - 1,4 |
| : - eσ - eτ | 0,83 0,71 | - 0,76 |
| :: - ψσ - ψτ | 0,05 | - |
| : - F - V | ||
| : - σD - τD | 2,53 3,09 | - 1,84 |
| : - sσ - sτ | 5,76 12,82 | - 7,05 |
| 5,25 | 7,05 |
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