() () . 25478-91 . .
j Sm. :
j =(j * cosa+ fi)*g, (21)
g- ;
g=9,8 /2;
:
j max =j *g, (22)
j =0,4:
j max =0,4*9,8=3,92, (23)
j =0,8:
j max =0,8*9,8=7,84, (24)
:
ST =A*V0 + V0 2 /26 j, (25)
V0 - , /;
- , ;
j =0,4, A=0,16
V0 =20(/): ST =0,16*20+202 /26*3,92=7,12 ,
V0 =40(/): ST =0,16*40+402 /26*3,92=22,09 ,
V0 =60(/): ST =0,16*60+602 /26*3,92=44,92 ,
V0 =80(/): ST =0,16*80+802 /26*3,92=75,59 ,
V0 =100(/): ST =0,16*100+1002 /26*3,92=114,12 ,
j =0,8,A=0,16:
V0 =20(/): ST =0,16*20+202 /26*7,84=5,16 ,
V0 =40(/): ST =0,16*40+402 /26*7,84=14,24 ,
V0 =60(/): ST =0,16*60+602 /26*7,84=27,26 ,
V0 =80(/): ST =0,16*80+802 /26 *7,84= 44,19,
V0 =100(/): ST =0,16*100+1002 /26* 7,84= 65,06 ,
1 ,
, / | |||||
j =0,4 | 7,12 | 22,09 | 44,92 | 75,59 | 114,12 |
j =0,8 | 5,16 | 14,24 | 27,26 | 44,19 | 65,06 |
. 2. ST = f(V0)
:
b . :
b=arctgB/2h, (26)
B - , .
B/2h - :
m= B/2h,, (27)
m=2 /2*1,72=1,72,
b=arctg(1,72)=34,97, (28)
- , :
R- , ;
R=40: V = 76,8 /,
R=60: V = 94,1/,
R=80: V = 108,6/,
R=100: V = 121,5/,
2
R, | ||||
V, / | 76,8 | 94,1 | 108,6 | 121,5 |
j =0,4 j =0,8 :
|
|
j =0,4
R=40: V = 45 /,
R=60: V = 55,2 /,
R=80: V = 63,7 /,
R=100: V = 71,2 /,
j =0,8
R=40: V = 63,7 /,
R=60: V = 78,07 /,
R=80: V = 90,15 /,
R=100: V = 100,8 /,
3
R, | ||||
j =0,4 | 55,2 | 63,7 | 71,2 | |
j =0,8 | 63,7 | 78,07 | 90,15 | 100,8 |
. 3. V =f(R) V =f(R) j
, , , .
: R, ( ) V.
:
R =La /tg(Q-d1)+tgd2, (31)
d1 d2 - , ;
Q - , . Q=(0,62-0,7).
d1 d2 , . , .
d1 =Pd 1 /åK1, (32)
d2 = Pd 2 /åK2, (33)
Pd 1 Pd 2 , (), ;
åK1 åK2 , /.
, , , :
Pd 1 =0,4**j mk 1 * g, (34)
Pd 2 =0,4*j * mk 2 * g, (35)
K 300-600 / 700-1200 / . åK () :
åK =nk * K, (36)
nk =6 .
K =1000 /
åK1 =2*1000=2000 /,
åK2 =4*1000=4000 /,
j =0,8:
Pd 1 =0,4*0,8* 4835* 9,8=1515,5 ,
Pd 2 =0,4*0,8* 10485 * 9,8=41101,2,
d1 =1515,5/2000=70,
d2 = 41101,2/4000=100,
:
R =La /tg(Q-d1)+tgd2, (37)
Q=:42
R =4,9/(tg(420 -70)+tg100)=10.8,
:
R=La /tgQ, (38)
R=5,18/tg420 =5,18/0,6745=12.3,
R R:
, . . R >R.
.
. , .
|
|
( g, /100 , g, / - (.-).
( ) G, /, g /(-).
.
(39)
Q , ;S , .
100 ( ).
, . , , , , , . , , , .
(40)
ρm , /; G (), (.); S , .
/;
. , .
(41)
- ,
/;
(42)
N , .
(43)
g /( ); N ; ύ /.]
/
:
(44)
; ; /.
, (g); (η); (); (), ().
.
.
.
( ) - .
, - .