: 1 2,5 , η = 200 = 80 , (. 4).
z1 = 0,85
z2 = 0,77 .
B to = 3,8 (. 4)
t = (1.1÷1.15)3,8= 4,3
3.6 , q (0,L) = 0 /2
, , .
= 255,34 .
, (. 4).
Raq = 110,35 .
:
Mq = ηz1 = 2000,85 = 170 .
3.7 Δ Δ Ra
4
3.8
q (x1,x2)
;
q(x1,x2) = q(9,10.8) = 90 /2.
- -, ( 5).
φ º, 45º+φ/2.
( ) a, b, c, - b. : ,
q=90/2 - ;
x1=9,0 , x2=10,8 - .
1 = 31,23 /2
2 = 33,75 /2
3 = 49,23 /2
q , .. .
Ei 4.
4
Ei, | Ei, | Ei, | |||
1,01 | 40,01 | 62,72 | |||
6,18 | 47,56 | 100,62 | |||
11,81 | 55,12 | 138,52 | |||
17,43 | 15,63 | 152,76 | |||
33,99 | 2,79 | 234,84 | |||
38,34 | 20,62 |
.
q(9,10.8) = 90 /2:
z1 = 1,25
z2 = 1,14 .
to = 4,3 (. 5)
|
|
t = (1.1÷1.15)5,1= 5,6
q = ηz1 = 2001,25 = 250 - q(9.0,10.8) = 90 /2
Raq = 128,74 / q.
3.9 Δ[q] ΔRa[q] q(9.0,10.8) = 90 /2:
3.10 q (x1,x2)
ΔRa=ΔRa[q(x1,x2)], ΔM=ΔM[q(x1,x2)] ( 6)
.
:
=106 , =101,9 =119,25 /2; =498,42 /2.
: =119,25 /2
4.
:
,
q(0,L) = 40 /2 ;
= =119,25 /2- ;
= 7,6 /2 - / .
/2
5,
6
:
1. .. , -. 2000 .
2. .. , -. 2006 .
3. .. , , 1974 .