5.1.1.
5.1.1.1.
. 5.6. .
1. (2.1) :
.
d = 50 (. 5 ).
2. (2.3) 10 :
d = d - 3,2r = 50 3,23,0 = 40,4
d = 45 .
, , 30% ( ), 209. B2 = 19 [1, 8].
. 5.2. -
.
5.1.1.2.
(. 5.2) (. 2.2.2, . 2.5, 2.7).
, :
d = 0,025 w + 3 = 0,025355 + 3 = 11,9 ,
d = 12 ;
= (11,2) d = (1 1,2)12 = 1214,4 ,
= 12 .
. L = 2 l. 1 (lcm1T = b1T =100 ) Lkon:
Lkon = lc2 + (R e b2) sin δ1 =71 + (206,16 56) sin 14,036 = 107,42 .
, l = c + Lkon = 12 +107,42 = 119,42 .
l = 120 .
, L = 2 l = 2120 = 240 .
L2 = L + B2 = 240 + 19 = 259 .
l1 = B2/2 + + l2 /2 = 19/2 + 12 + 71/2 = 57 .
l3 = B2/2 + + l1 /2 = 19/2 + 12 + 100/2 ≈ 72 .
l2 = L2 l1 l3 = 259 57 72 = 130 .
5.1.1.3.
.
.. 350 , , ( 380-2005) , , 5 (. 1.1, 1.2) σ = 520 .
|
|
:
σ -1 = 0,43 σ = 0,43520 = 224 ;
t-1= 0,5 s-1= 0,5224=112 .
:
,
[ s ] = 2; Ks = 2,2.
5.1.1.4.
, (. 5.3). (. 5.4) , .
. 5.3. ,
-
. 5.4. ,
- .
5.1.1.5.
1. . 5.4 , (. 5.5, ).
2. , (. 5.5, ).
, :
∑ MA= 0; Ft2l1 ZB L2 + Ft1T (l1 +l2) = 0;
ZB = (Ft2l1 + Ft1T (l1 +l2))/ L2,
ZB =(241057+6942(57+130))/259 = 5542,6;
∑ M= 0; ZA L2 Ft2 (l2 +l3) Ft1Tl3 = 0;
ZA = (Ft2 (l2 +l3) +Ft1Tl3)/ L2,
ZA =(2410(130+72)+694272)/259 = 3809,4.
: ∑ Z= 0;
Ft2 + Ft1 ZB ZA = 2410 + 6942 5542,6 3809,4 = 0.
3. , , ͷ:
1: 1 =0;
2: 2 = -ZAl1 = 3809,457= 217136;
3: 3 = -ZAl1 = 3809,457= 217136;
4: 4 = -ZBl3 = 5542,672 = 399067,2;
5: 5 = -ZBl3 = 5542,672 = 399067,2;
6: 6 =0.
(. 5.5, ).
4. , (. 5.5, ).
, :
∑ MA= 0; Fa2dm2/2 + Fr2l1 + XBL2 Fr1T(l1+l2) = 0;
XB = (-Fr2l1 + Fr1T (l1+l2) +Fa2 dm2 /2)/ L2,
XB = (21357 + 2525(57+130) + 850345,67/2)/259 = 2343,41.
∑ M= 0; Fa2 dm2 /2 Fr2(l2+l3) + X AL2 + Fr1Tl3= 0;
XA = (Fa2 dm2 /2 + Fr2 (l2+l3)- Fr1Tl3)/ L2,
XA = (850345,67/2 + 213(130+72) 252572)/259 = 31,41.
: ∑X = 0;
Fr2 Fr1T XA + XB = 213 2525 31,41 + 2343,41 = 0.
5. , , ͷ:
1: 1 =0;
2: 2 = XAl1= 31,4157 = 1790,4;
3: 3 = XAl1 + Fa2dm2/2,
3 = 31,4157 + 850345,67/2 =145119,4;
4: 4 = XBl3 = 2343,4172 = 168725,5;
5: 5 = XBl3 = 2343,4172 = 168725,5;
6: 6 =0.
(. 5.5, ).
6. , ͷ:
1: Σ1 =0;
2: ;
3: ;
4: ;
5: ;
6: .
(. 5.5, ).
7. (. 5.5, ).
, ͷ:
1 = 2=0;
3= 4 =2= 416500;
|
|
5= 6=0.
(. 5.5, ).
8. , ͷ:
1: ;
2: ;
3: ;
4: ;
5: ;
6: .
(. 5.5, ).
9. , :
1: ;
2, 3: ;
4, 5: ;
6: .
10. , (. 5.5, ).
. 5.5. : ; , ; , ͷ; , ; , ͷ; , ͷ; ; , ͷ; , ͷ;
,
5.1.2.
, d ( 1, 6) d = 45 . (.23) d = 50 .
df1T / d = 107,5 / 50 = 2,15. , . d = 50 .
: d = d + 3,2r = 50 + 3,23,0 = 59,6 , Ra 40 (. 5 ) d =60 .
. . 6 : b = 14 , h = 9 , t1 = 5,5 , t2 = 3,8 . l1 =63 , l2 =90 .
. 5.6.
, . 11 12 .
7 /r 6.
L0 / k 6.
P9/h9. +0,2.
1,6 , 0,8 . , 1,6 . 12,5 . 3,2 , 6,3 . 6,3 .
. 5.6. |
5.1.3.
(. 5.5) (. 5.6) ( 4) (. 5.7). 4 = 416500 ͷ Σ4 = 433270 ͷ, .
2.4.1.
. 5.1.
. 5.7.
5.1
4 | |
, | |
, 3: - - | 10740,83 23006,46 |
, ͷ | |
, ͷ | |
, : - σ - τ | 40,3 9,0 |
, : - σm - τm | 9,0 |
: - σ - τ | 1,8 1,4 |
: - eσ - eτ | 0,81 0,7 |
: - ψσ - ψτ | 0,05 |
: - F - V | |
. 5.1 | |
4 | |
: - σD - τD | 2,22 2,0 |
: - sσ - sτ | 2,5 6,2 |
2,3 |
|
|
5.1.4.
, , , , , , . 2.7.
. 20 26 .
:
- , k 6 IT = 16 ; T g ≈ 0,5∙ IT = 0,5∙16 = 8 ;
- 7/r6
IT = 16 ; T g ≈ 0,5∙ IT = 0,5∙16 = 8 .
:
-
. .22. T r = 4 , 209 2 =19 , T r= 40,119 = 7,6 , 8 ;
- , 8- , 50 . 23 24 T r= 40 .
- , 7- , 50 . 23 24 T r= 30 .
:
- , . 25 45 8, T b= 20 ;
- , 1.
(. 21 ). . b = 14 9- t = 43 . T f ≈ 0,5∙ 43 = 21,5 , T f =22 , T i = 2,0∙ t = 243 = 86 , T i = 90 .
. 5.8.