Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mechanics of bioinspired fiber reinforced elastomers   Fiber reinforcement is a crucial attribute of soft bodied muscular hydrostats
that have the ability to undergo large deformations and maintain their posture.
Helically wound fibers around the cylindrical worm body help control the tube
diameter and length. Geometric considerations show that a fiber winding angle
of 54.7 degrees, called the magic angle, results in a maximum enclosed volume.
Few studies have explored the effects of differential fiber winding on the
large deformation mechanics of fiber reinforced elastomers (FRE). We fabricated
FRE materials in transversely isotropic layouts varying from 0-90 degrees using
a custom filament winding technique and characterized the nonlinear
stress-strain relationships using uniaxial and equibiaxial experiments. We used
these data within a continuum mechanical framework to propose a novel
constitutive model for incompressible FRE materials with embedded extensible
fibers. The model includes individual contributions from the matrix and fibers
in addition to coupled terms in strain invariants, I1 and I4. The deviatoric
stress components show inversion at fiber orientation angles near the magic
angle in the FRE composites. These results are useful in soft robotic
applications and in the biomechanics of fiber reinforced tissues such as the
myocardium, arteries and skin.

29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol