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Mechanicsof Composite Materials - 2008
\)LCTIvE PREFORVINC
ll Frauenhqfer. K. Dilger
THE INFLUENCE OF INTERFACE ON THE MECHANICAL PROPERTIESOF
NANOCOMPOSITES
D. Ciprari, I. Jasiuk, R. Tannenbaum,and K. I. Jacob
66
HOLLOW-CORESLABS REINFORCED
MECHANICAL BEHAVIOR OF PRESTRESSED
WITH FRP
G. Concu,D. Meloni, and M. Valdes.
3]\?E STRE\GTH.{\D DEFO
3 \SED O\ DISTINCTI\'EI
S Gardukot.R. D..llaks,;,
68
FAILURE SIMULATION FORMETAL.COMPOSITEJOINTS
A. Derewortko
69
: \\ :RO\\IE\T..\L DEGL.\DT
K Gani. \. Il. Barkoula. .
P Karapappas.andl'Ka
70
3- C-f,L l\C ..\\ D POSTBUCX
)ROST.{TICPRESSURE
S Gluhih.E. Barkanor. aa
71
\.- \!ERICAL SI\{ULATIO\ (
BY USI\G .
CO\tPOSITES
!- .1 Golotina.L- L Xo:hc
IDENTIFICATIONOF THE MECHANICAL PROPERTIES
OF A CARBON-EPOXYCOMPOSITEBY THE FINITE.ELEMENTMETHOD
A. Derewoiko, K. Kosiuczenko,and R. Gieleta.
DYNAMICAL RESPONSETO A MOVING LOAD OF A PRESTRAINEDSYSTEMCOM.
PRISINGA SUBSTRATEAND BOND AND COVERINGLAYERS
E. Dincsoy, C. Guler, and S. D. Akbarov. . . .
IDENTIFICATION OF THE ELASTIC AND DAMPING PROPERTIESOF LAMINATED
PLATES
B. Diveyev, I. Butyter, and N. Shcherbyna . . . .
A COMPOSITEMATERIAL WITH ADDITIONSOF NANOPARTICLESFOR THE DEVE.
LOPMENTOF A SMARTWALL
C. Dumiterescu,M. Menicu, L Cernica,A. Matei, and D. Mihalevschi .
PROPERTIESOF DIFFERENTASYMPTOTICALLY EQUIVALENT FORMS OF EQUA.
TIONSOF HIGHERORDERFORWAVESIN THIN ELASTICRODS
M. E. Eglil
AN EXPERIMENTALAND NUMERICALSTUDYON THE DYNAMIC BUCKLINGOF CY.
LINDRICALCOMPOSITE
SHELLS
E. Eglrtis, K. Kalnirli, O. Ozolirli, andG. Teters.
- \-(''- L..\TIO\ OF STATIC\
'*:TH ADJUSTEDBOL\:
73
74
:] :i{EOR\'OF LA\'EREDOF
G L Gon'nin arul l'u I' I
75
s€:;-Bl\DI\G t*'oop gor{I
:\C E\'.{LU.{TIO\ OF T}
J Graritis.J. .ibohr.s..l )
76
\^)\TTORI\C CO\IPLE\ C,\
3ER BR.{6 CR{TI\CS
R Gnmberg..{ Scr;a P
\.]\)ESTRUCTI\'E E\ .\LL I
'.
LTR-\SOU\DPI{,\-iEf
?. G nmberg.R 5;.';,9'q-'
DYNAMICAL RESPONSE
OF TWO AXIALLY PRESTRAINEDSYSTEMSCOMPRISINGA
COVERINGLAYER AND A HALF-SPACETO RECTANGULARTIME.HARMONIC
FORCES
I. Emiroglu, F. Tasci,and S.D. Akbarov. . . .
77
FE SIMULATION OF SANDWICHPANELSWITH A FLINCTIONALLYGRADEDCORE.
PARTI: LOW.VELOCIry IMPACT
E . E t e m a d i a n d A . A f a g h i K h a i .i br .i . - .
.......
79
FE SIMULATION OF SANDWICHPANELSWITH A FI.JNCTIONALLYCRADED COREPARTII: HIGH-VELOCITYIMPACT
E.EtemadiandA.AfaghiKhatibi.....
. .............
8I
THE INFLUENCEOF CNT CONCENTRATIONON THE THERMOPHYSICALPROPERTIESOF EPOXY/CARBONNANOTUBECOMPOSITES
AT LOW TEMPERATURES
L. E. Evseevaand S.A. Tanaeva
8-3
\ STI-\I\ R.\TE-DEPE\DE
;E\TILE-REI\FORCEtr(
It Gude.ll' Hutentwh
:!:ICTI\'E \IOISTI'R.ED{FT
D Gan}cF J,xSta t.
\atRCO\\'ERSIO\S OF \'.
\IODELS
OF SPECIFIED
O G Gurtort
\., \TERICALA\{LYSIS OI
.QI\GS\\'ITH DEFECTS(
O G Gurton and S O
THERMOMECHANICALPROPERTIES
OF AN EPOXY/CLAYNANOCOMPOSITEIN RE.
LATION TO FILLERAND MOISTURECONTENT
E. A. Faitelson, T. I. Glaskova,A. N. Aniskevich,and V.P. Korkhov.
84
THE LIMITING STATEOF A MULTILAYER NONLINEARELASTICECCENTRICRING
L. Fatullayeva
85
NEW METAL COMPOSITEMATERIALS
O. FigovslE, S. Usherenko,and J. Usherenko.. . . .
86
uII
::O\ ELE\IE\T DI.{GRParlrk
O l' Gon'k...1..11
}:)\D 8EH.{\'IOUR BET\TE
CO\CRETEL\DER@i
R H Haddad and E .ll
-\'ELOP\IE\T OF SPACT
:L'R\L \tE\IBERS \IAI
! Hartung. K. Dilger S
Mechanicsof CompositeMaterials- 2008
AN EXPERIMENTAL AND NUMERICAL STUDY ON TIIE DYNAMIC
BUCKLING OF CYLN{DRICAL COMPOSITE SHELLS
E. Eglttis,*K. Kalni4i,* O. Ozoliqt|,.and G. Teters**
*Riga Technical University, Institute of Materials and Structures,Latvia
**University of Latvia, Institute of Polymer Mechanics, Latvia
The presentinvestigation focuseson the dynamic effects associatedwith load
speedversusthe buckling behavior of axially compressedcylinders.
Several glass, aramid, and carbon fiber-reinforced plastic cylindrical specimens have been produced for experimentalvalidation. The production method
was cylindrical winding with vacuum resin impregnation.All the specimensproducedhad a length of 850 mm and inner diameterof approximately 300 mm. The
production technology required that the testing specimensbe slightly conical, so
the inner diametervaried along the specimenlength. The specimenswere loaded
quasi-staticallyup to the post-bucklingregion (seeFig. 1) to evaluatethe buckling
load and the post-buckling behavior under static loading. Then, the axial loading
was repeated,gradually increasingthe loading speedup to 0. 15 m/s, with registrating the load-shortening curves. A nondestructive vibration testing was performed before and after the loading teststo veriff that no damagehad occurred.
The numerical part representsthe benchmarkingof the commercially available
DYNAMICAL R]
SYSTEMSCOMPRII
TO RECTr
I. Emit
*Department of Mathem
Technical University,,
'jlnst. of Math. and
Mech,
In the presentpaper,
casewhererectangulart
ase, the problem is red
It is assumedthat th
Q 1 = { - c o( . x 1( + a , - h
-t1x21-h,-@(-r3.
cquationsare satisfied:
ao(.!)
'J
+o\!
rl
orj
o(z) =1(z)gtr
Urherel"(r)
and p(r) are
EY
The quantitiesrelated
rnpts (1) and (2), respe
The following compl
blt:space:
Fig. I . Thepost-bucklingshapeof an axiallycompressed
glass-fiLercylinder.
finite-element analysis software packagesABAQUS and ANSYS/LS-DYNA by
using data obtained from the physical experiments.A procedure of optimum
designis proposed.
" !' t )lxz=-h
l
= ut(
rd rheconditions
REFERENCE
L J.Singer,J.Arbocz,andT. Weller,"BucklingExperiments:
Experimental
Methodsin
Bucklingof Thin WalledStructures,"
Vol. 2, J. Wiley & Sons,New York (2002),1732p.
"!?l
"txr=Q
={-'o
L0