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:




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1 2 f1(t) f2(t)

11 12 , 11 = 12 =1, 21 22 .

, f1 f2

F1 F2 , 1 2 :

 

. I.. = 35520 4; E = 2,1106 /2; l = 400 ; Q = 4000 ;

m = = 4,08 ; P = 600 ; ω = 100 1/. δ11, δ12, δ21, δ13, δ22, δ33.

δ11 = δ33 = 75 , δ22 = 243 , δ21 = δ12 = δ32 = δ23 = 117 , δ13 = δ31 = 51 .

/

 

 

δ11 = δ33 = 5,5310-6 /; δ22 = 17,9210-6 /;

δ21 = δ12 = δ32 = δ23 = 8,6410-6 /; δ13 = δ31 = 3,7610-6 /.

1 = 3 = - 0,064 , 2 = - 0,128 . 10

ω 1.

-1

;

;

 

u(x, t) = U(x)sinωt

U(x)

-

- .

C, D , .

 

U = 0 ;

 

 

= 0; U = 0; = l

 

 

U ; D = 0

;

ω = 0

.. ..

m= const

-

S, T, U, V

1, 2, 3, 4

; ; ;

 

1 = 2 = 0;

3- 4-

3 = -

4 = -

chklcoskl+1 =0 ; tgkl = thkl .

 

-

 

ω.

 

 

γ .

;

μ* -

 





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