. , 0.25 40 4.0 106 [1]. , , -. , . .
:
- , , , (.1);
- , ;
- ;
- , , ;
- , , .
R - ;
h - ;
H - ;
- ;
- ;
l m - ;
r - ;
Ec - ;
- ;
- .
.1.
[1]. , , , . :
(1)
, , , ,
, :
:
.
:
(3)
, :
(4)
, [2]. .
|
|
(5)
(6)
(7)
- , :
, [2], (5), () (7) , .
(8)
a b .
, . . , : , , 0.5. ( ).
, , . :
(9)
.
, , (.2):
. 2.
- ,
- , ,
t1 - ,
t2 - .
, , , , :
(10)
(.3):
, F0 = 10 kN;
, t1 = 0.04 ;
, = 600 /;
, = 350 /;
, = 1700 /3;
, H = 30 ;
, R = 2.8 ;
: h =0.30 ;
, ;
, ;
.3.
, = 0.2;
;
, 35, = 32500 .
. . :
(11)
:
(12)
:
(13)
1. (4).
.4. .
2. , . (.5).
|
|
.5.
(, r=r0) (.6):
(14)
.6. (. ).
(, r=r0) (.7):
(15)
.
1. Miller,G.F.,H.Pursey: The Field and Radiation Impedance of Mechanical Radiators on the Free Surface Semi-Infinite Isotropic Solid, Proc. Ro. Soc. London, Ser. A, vol. 223, pp. 521-541, 1954.
2. ..
3. ..: , , 13, 2005
4. White, J.E.: Seismic waves: Radiation, Transmition and Attenuation,,McGraw-Hill Company, New York, 1965. - 148-184 pp
5. White, J.E.: Use of Reciprocity Theorem for Computation of Low-frequency Radiators on the Free Surface Semi-Infinitive Isotropic Solid, Proc. Ro. Soc. London, Ser. A, 1954. - 521-541 pp
6. 2.05.03-84*. . .: , 2002. - 213.