SCIENTIFIC ABSTRACT AFANASYEV, Y.F. -

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000100420001-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 5, 2000
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

ACCE.5310N 1111: AP4043519-
!uravneniyakh matematicheBkoy fiziki. Matem. ab. vol. 14 (56)t
Vy*p. 1-2, 1944) a
Fredholm type of integral equation was derived for 1). Illustrative
examples were
;worked out for specific cases of given pressure profiles. Orig.
art. hast 25
formulas and 3 figures.
ASSOCIATION: Institut mekhaniki AN SSSR (Institute of Mechanical AN
SSSR)
SUBMITTEDt 3ijun63 ENCLi 00
SUB CODEs ME NO REF SOVIL 005 OTHM 1 002
'Card--:
3/3

AFANASSYEV, Ye.F. (Moskva)
,
Impact of a body against a thin plate lying on the surface of
a compressed liquid. Prikl, mat. i mekh. 28 no.5:868-879 S-0
164. (MIRA 17:11)

t 15689-65 E',VT(1)/EWFW/F-1S(k A (h
A01CESSION NE: AP4049573
'AFFT:
~;/02 58/64/004AW0650/0658
AUTHOR: Afantislyev, Ye. F. (Ijoscow)
TITLE: Effect of a weak shock vave on a body lying on the
boundary dividing two
media %t
SOURCE: 1n7.henerTq*Y zhurnal, v. 4, no. ;, 1964', 650-658
TOPIC TAGS: shock wave, diffrzaction study, ecmpressible fluid,
displacernent
reacticn
ABSTRACT: The author studies the plans diffracti.on problem of
the effect of a
shock wave on a boJ.- w"Lth rectangular sect-ion on, the
botLrldary dividing two media
of the imcompressible fluid tv~,e 0 he finds the
fDrces Fjkt) and F,(t,' actirw- on '-he
q nz! -:~, !aw r-v-~ti 7
<
Lnf) boid~, respA)c-
44 vely, ~c not rautually Influence tne press~jr~- fiel(is Jr,
~.ham. He fi-rst studies
two aux-i-liary probiemB: A) on di-ffracLl,:~L of tiit, urave p
= F(t-y-h) with respect
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the direction
of the Oy axis at "he rote V(t); and B) on -!Ie n -11 a rigid
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(X 0, y < 0) aceordirng tc tll.e -,e ACe Y
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L_ A T 1,-., Ninstitut mekhaniki AN- S SS Ins' 'itu Le J' Mechanics,
AN SSSR)
ST-'B~UTT-SD: 24Dec63 ENCL: 00
SUB COM M W REF SOV a 004 GTHERs WD
-Card

AFANASIYEV, Ye,F. (Mcs~va)
Action of a weak shock wave on an cbvlacl~~- 4
164. W-7RA 17:13-0)
1. Institut mekhaniki AN SSSR.

AFANASIYET,, Ye.F. (Moskva)
Effect of a waak shock wave on a body located on
the boundary
of separation of two media. Inzh. zhur. 4
no-48650-658 164
(MIRA 1W)

L 58292-65 r-R-r-(j)#ijP
ACCESSION NR: AP5019h77
M % A J-. - ru-JL
UR/OD40/64/028/005/0W/0879
le. F.
AUTHOR: E!~IBI yev
Tl= : Body striking a thin plate.1ying in the surface of
a-c-o-ppressible fluid
,50L~RCE: Prtkiadnaya matematika i mekhanika, v. ?F, no. 1~, 1964,
868-879
,TOPIC TAGS: flat plate model, fluid surface, compressible fluid ,
differe"tial
'equation
ABSTRACT: The plane problem of a body of finite width striking a
thin
plate lying on the surrace of a compressible fluid is discusapd.
The
problem ii set up and for some initisl time inLervdl reduced to
the aolu-
of an integral differenti&1 equation in which the integral term has
I If f erence liornpl vi ?,h a seini- f int tp in, rereeni, in the
variables, Tile
~uL~,c- ~. )( Une equation in given -n lte F-~,rm- ~f The exist-
ence of the Sojutiou .1a proved. Tli- p~,-eF, !tz tn-n .4olyed for
&n-v given
tIML., Simplo fomulas are gi-ron for calcuiftttiij~ t~:Ik
-leformation of the
Card 112

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fACCESSION KR.f AP5019477----
0
plate a-nd the velocity of the body after strtking the plate. The effect of
the pla
plate on a body Fitriking a fluid i.-3 ann' v7P,1 F, ~irf fig-ures, 97 foMilaS.
kSS(~- : fiLT ~ ON. none
.1M'T7FD- ? ~~'tq r~-
71, IDE ME
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ACC N~ ' AR6033808 SOURCE CODE: UR /0l24/66/000/067/V096M2l_-
a
AUTHOR: Afanaslyev.-Ye. F.
TITLE: Action of shoelk waves on an obstacle
SOURCE: Ref. zh. Mekhanika, Abs. 7VI59
REF SOURCE: Tr. 5th Sessit Uch. soveta po narodnokhoz. ispolIz.
vzryva.
Frunte, Ilim,
TOPIC TAGS: shock wave, shock wave interaction, Helmholtz equation,
Fredholm
equation, Dirac delta function
ABSTRACT: The problem of the interaction of an absolutely hard moving
plate of
finite width with a plane shock wave in a linearly elastic medium is
solved in an
acoustic approximation. The disturbance pressure satisfies the wave
equation and
the boundary condition on the plate. By means of the Laplace
transform with
respect to time the problem is reduced to a solution of the Helmholtz
equation with
the Neumann condition in the half-plane. The solution of the
Helmholtz equation
is represented in the integral form by means of the MacDonald
function. The
Im
unknown function participating in the solution of the He holtz;
equation is found
from the condition of the continuity of pressure outsid. the plate
which results in
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ACC MR' AR6033808
the solution of a Fredholm integral equation of the second
kind. The Fredholm
equation is solved by the method of successive approximations.
The expression
derived for the pressure drop value on the plate includes terms
of the incident,
reflected and diffraction waves. Curves of pressure
distribution on a fixed plate
of finite width are given for a step wave as function of the
time elapsed since the
collision. The speed of plate displacement Is determined for
the initial movement
of time with the action of a stepwise impulse and an impulse
having the intensity of
the Dirac -function. A. G. Gorshkov. [Translation of abstract)
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L-2784-66 SWT(l)/KWP(M)/FC5(k)/KV1A(l)
ACCESSION KRs AP5021524~
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534*26
Y
A'JT110Rs Afanaslyev, Ye. F9 Moscow)
TIT19i One problem In shock wave diffraction
t SOURCEs InzhenerWy zhurnall v, 5, no. 4, 19659 612-622
TOPIC TAGS: shock wavep wave diffraction, shock wave diffraction,
shock wave
interaction
ABSTRACT: Using linear approximation., the plane problem of shock
wave interaction!
(including diffraction and vave effects) with a shape shown in Fig.
I on the
Enclosure is considered. Assuming an arbitrary wave and pressure
profile pl
P(x#y,,t), the solutions to case la and 1b (see Fig, I on the
Enalosure) are
aesumd as
'PV (X, 0, 0.
P-P.(X,Y.t) (Y>0'-1