The neoclassical model for nematic elastomers, which displays soft elasticity, predicts striping in stretched sheets. Thus the experimental observation of striped domains has been suggested as evidence for soft elasticity. Here we show that the postulated director rotations and shears in the domain regions are also predicted by more general constitutive models that do not involve any notion of softness. Striping in nematic elastomers may therefore be a more general phenomenon that is not necessarily an indication of soft elasticity. Furthermore, constitutive models more general than the neoclassical model may also explain the behavior of some nematic elastomers that do not appear to exhibit striping.
REFERENCES
1.
I.
Kundler
and H.
Finkelmann
, Macromol. Rapid Commun.
16
, 679
(1995
).2.
G. C.
Verwey
, M.
Warner
, and E. M.
Terentjev
, J. Phys. II
6
, 1273
(1996
).3.
P.
Bladon
, E. M.
Terentjev
, and M.
Warner
, Phys. Rev. E
47
, R3838
(1993
).4.
P.
Bladon
, E. M.
Terentjev
, and M.
Warner
, J. Phys. II
4
, 75
(1994
).5.
6.
J.
Küpfer
and H.
Finkelmann
, Macromol. Chem. Phys.
195
, 1353
(1994
).7.
S.
Conti
, A.
DeSimone
, and G.
Dolzmann
, Phys. Rev. E
66
, 061710
(2002
).8.
S.
Conti
, A.
DeSimone
, and G.
Dolzmann
, J. Mech. Phys. Solids
50
, 1431
(2002
).9.
P.
Martinoty
, P.
Stein
, H.
Finkelmann
, H.
Pleiner
, and H. R.
Brand
, Eur. Phys. J. E
14
, 311
(2004
).10.
G. R.
Mitchell
, F. J.
Davis
, and W.
Guo
, Phys. Rev. Lett.
71
, 2947
(1993
).11.
E.
Fried
and S.
Sellers
, J. Mech. Phys. Solids
52
, 1671
(2003
).12.
13.
P. G.
de Gennes
, in Liquid Crystals of One- and Two-Dimensional Order
, edited by W.
Helfrich
and G.
Heppke
(Springer
, New York
, 1980
), p. 231
.14.
J.-P.
Jarry
and L.
Monnerie
, Macromolecules
12
, 316
(1979
).15.
B.
Deloche
and E. T.
Samulski
, Macromolecules
21
, 3107
(1988
).16.
A.
Halperin
, J. Chem. Phys.
85
, 1081
(1986
).17.
H. R.
Brand
and H.
Pleiner
, Physica A
208
, 359
(1994
).18.
G. C.
Verwey
and M.
Warner
, Macromolecules
28
, 4303
(1995
).19.
R. D.
Mindlin
, Arch. Ration. Mech. Anal.
16
, 51
(1964
).20.
R. A.
Toupin
, Arch. Ration. Mech. Anal.
17
, 85
(1964
).21.
22.
23.
24.
T.
Beda
and Y.
Chevalier
, J. Appl. Phys.
94
, 2701
(2003
).25.
J.
Weilepp
and H. R.
Brand
, Europhys. Lett.
34
, 495
(1996
).26.
E. M.
Terentjev
and M.
Warner
, Europhys. Lett.
37
, 495
(1997
).27.
J.
Weilepp
and H. R.
Brand
, Europhys. Lett.
37
, 499
(1997
).© 2006 American Institute of Physics.
2006
American Institute of Physics
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