5.12 ( 1 2 [ 1 3 ]) qhdes, /(2××) [/(3××)], , qhreq, /(2××) [/(3××)], , - , ,
qhreq ³ qhdes, (6)
qhreq - , /(2××) [/(3××)], :
) 8 9;
) (, ) - , 8 9, e,
e = edec/e0des, (7)
edec, e0des - , . .
8 - qhreq , /(2××)
, 2 | ||||
60 | - | - | - | |
- | - | |||
- | ||||
- | ||||
- | ||||
1000 | - | |||
- 60 - 1000 2 qhreq . |
5.13 Rreq, 2×/, 4. qhdes , , qhreq. , Rreq ( 4 4) 4, Rmin, (8) , . 1 2 4, (9) - :
|
|
Rmin = Rreq ×0,63; (8)
Rmin = Rreq ×0,8. (9)
9 - qhreq, /(2××) [/(3××)]
1-3 | 4, 5 | 6, 7 | 8, 9 | 10, 11 | 12 | |
1 , , | 8 | 85 [31] 4- - 8 | 80 [29] | 76 [27,5] | 72 [26] | 70 [25] |
2 , . 3, 4 5 | [42]; [38]; [36] | [32] | [31] | [29,5] | [28] | - |
3 , - | [34]; [33]; [32] | [31] | [30] | [29] | [28] | - |
4 | [45] | - | - | - | - | - |
5 | [23]; [22]; [21] | [20] | [20] | - | - | - |
6 () | [36]; [34]; [33] | [27] | [24] | [22] | [20] | [20] |
- , Dd = 8000 × , qhreq 5 %. |
5.14 kedes, , :
0,25 - 16- ;
0,29 - 10 15 ;
0,32 - 6 9 ;
0,36 - 5- ;
0,43 - 4- ;
0,54 - 3- ;
0,61; 0,54; 0,46 - -, - ;
0,9 - - ;
1,1 - .
5.15 kedes
kedes = esum/Vh, (10)
esum - , () , 2;
Vh - , , , 3.