.


:




:

































 

 

 

 


25




" "

3- Ի

 

1. .

.

2. .

2. .

,

q = P/a; M = Pa.

 

 

.0.. ..

 

---------------------------------------------------------------------------------

 

Ȼ

---------------------------------------------------------------------------------------------------------------------

26

 
 


" "

3- Ի

 

1.

2. .

3. .

.

L,

[σ] = 100 , = 5 , P = 20 .

 

 

.0.. ..

Ȼ

---------------------------------------------------------------------------------------------------------------------

 

27

 
 


" "

3- Ի

 

1. ,

, .

.

2. .

3. . ,

,

.

,

 

= 10 , = 5 L = 1 .

 

 

.0.. ..

 

--------------------------------------------------------------------------------------------------------------------------

Ȼ

--------------------------------------------------------------------------------------------------------------------

 

28

" "

3- Ի

 

 

.

 


1. .

.

.

2. .

3. .

,

 

P = 100 , F = 10 2, = 1 ,

 

dT = - 20 K-1 , α = 1,2.10-5 K-1.

 

E = 2. 105

 

 

.0.. ..

Ȼ

---------------------------------------------------------------------------------------------------------------------

29

" "

3- Ի

 

 

1. . .

.

2. .

3. .

,

dT

 

P= 100 kN, a = 1

 

F = 10 2, dT = 20 K-1 ,

 

α = 1,2.10-5 K-1, = 1.105 , β = 300.

 

.0.. ..

 

-----------------------------------------------------------------------------------

Ȼ

---------------------------------------------------------------------------------------------------------------------





:


: 2016-11-18; !; : 645 |


:

:

- , .
==> ...

1004 - | 818 -


© 2015-2024 lektsii.org - -

: 0.016 .