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-
4 = -
chklcoskl+1 =0 ; tgkl = thkl .
-
|
|
ω.
γ .
;
μ* -