" "
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
---------------------------------------------------------------------------------------------------------------------