- 17- .
- , text = -28 ; Dd = 4943 ×.
( ) b = 281 2.
- 13,8 ; - 281 2.
, , - 1,04 . , , - 48,9 2.
l , ,
l = 13,8 + 2×1,04 = 15,88 .
- 1,2 .
b,w = 53,3 2.
Vb = 646 3.
70 , 60 .
lpi :
dpi, | |||||||
lpi, | 3,5 | 10,5 | 11,5 | 4,0 | 17,0 | 14,5 | 6,3 |
:
dpi, | ||
lpi, |
, I = 0,5 -1.
tint = 20 .
1. 9.3.2 Rob.w = 3,13 2×/.
2. 9.3.3 , , 3 2×/, .
( ) : 1 - 2,1 2×/; 2 - 4,3 2×/; 2 - 8,6 2×/; 1,9 - 14,2 2×/. 1 1,04 2 (, ), 1 2, 2 2, 2 2, 1,9 2.
,
Ros = 2,1 + 3= 5,12×/.
Ros = 7,94/[(1,04/5,1 + 1/2,1 + 2/4,3 + 2/8,6 + 1,9/14,2] = 5,25 2×/.
3. 23-02 Rreq Dd = 4943 × 4,12 2×/.
9.3.4 Rob.c
Rob.c = nRreq,
n - , tintb = 2.
n = (tint - tintb)/(tint - text) = (20 - 2)/(20 + 28) = 0,375.
Rob.c = 0,375×4,12 = 1,55 2×/.
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4. tintb 9.3.5.
(41), , 12. 2 , 12, , (34): - [(70 - 2)/(70 - 18)]1,283 = 1,41; - [(60 - 2)/(60 - 18)1,283 = 1,51.
= 1,41(22,8×3,5 + 2,03×10,5 + 17,7×11,5 +
+ 17,3×4 + 15,8×17 + 14,4×14,5 + 12,7×6,3) + 1,51(14,6×47 + 12×22) = 1313 + 1435 = 2848 .
tintb 2
tintb = (20×281/1,55 + 2848 - 0,28×646×0,5×1,2×28 - 28×329,9/5,25 - 28×53,3/3,13)/
/(281/1,55 + 0,28×646×0,5×1,2 + 329,9/5,25 +53,3/3,13) = 1198,75/369,7 = 3,24 .
qb.c = (20 - 3,24)/1,55 = 10,8 /2.
5. , D tn = 2 .
(3) 23-02
Romin = (20 - 2)/(2×8,7) = 1,03 2×/ < Rob.c = 1,55 2×/.
1,55 2×/ 23-02 4,12 2×/. , 23-02 ( ) , .
()