: ____________________________________________________________________
1. .
2. .
3. :
4. :
| m | ||||
| 1 | 2 | 3 | 4 | |
| n (1 ) | ||||
| n (2 ) | ||||
| n (3 ) |
5. :
| Δ n z | |||
| Δ n u | |||
| Δ n v |
6. :
- .
7. :
8. :
,
,
E=0,7∙105 , ν=0,33 .
9. :
_____________________________,
__________________________________________.
10. :
:
,
,
P . a =300 , l =260 , d =31 , h =1
:____________________________________________________________ __________________________________________________________________
__________________________________________________________________
. . 201 .
201 .
8
.
: .
.
2, 8.
.
 |
1 ,
2 ,
3 ,
4 .
.29.
:
- -,
- -,
- - (.23).
.
 |
1
 |
2
 |
3
.30.
, . ( ).
.
P :
.
, .. . : .
|
|
|
. 0,1-0,15 . , .. . , - .
- (.24).
