Encyclopedia of Polymer Science and Technology,
Год журнала:
2023,
Номер
unknown, С. 1 - 21
Опубликована: Март 15, 2023
Abstract
Fatigue
failure
of
rubber‐like
materials
has
been
often
previously
modeled
with
classical
power‐law
approaches,
however
the
new
generation
physics‐based
fatigue
models,
choosing
proper
model
depends
on
material,
loading
condition
and
computational
cost
users
can
afford.
In
view
high
number
validated
it
is
challenging
for
engineers
to
choose
a
reliable
specific
application.
service
condition,
reliability
elastomeric
components
influenced
by
variety
factors,
ranging
from
environmental
mechanical
loads
compound
properties.
sensitive
applications,
assuring
long‐term
performance
elastomers
subjected
multiaxial
variable
necessary
ensure
durability
system.
The
purpose
this
article
review
different
stressors
that
contribute
associated
modeling
approaches
used
assess
their
strengths
weaknesses.
Additionally,
summarizes
effect
thermal
oxidation,
moisture,
hydrolysis,
radiation
aging
properties
rubber,
which
studied
over
last
50
years.
Mechanics of Time-Dependent Materials,
Год журнала:
2023,
Номер
28(1), С. 273 - 287
Опубликована: Март 17, 2023
Abstract
In
the
present
work,
a
thorough
description
of
creep
response
polymers
in
both
linear
and
nonlinear
viscoelastic
domains
is
presented.
According
to
proposed
model,
polymeric
structure
considered
as
an
ensemble
meso-regions
linked
with
each
other
while
they
can
cooperatively
relax
change
their
positions.
Each
meso-region
has
its
own
energy
barrier
that
needs
be
overcome
for
transition
occur.
It
was
found
distribution
function,
followed
by
barriers,
attains
decisive
role,
given
it
associated
retardation
times
particular
effect
on
materials’
time
evolution.
The
crucial
role
imposed
stress
experiment
influence
spectrum
extensively
analyzed.
model
been
successfully
validated
series
data
variety
temperatures
levels
materials,
studied
experimentally
elsewhere.
Furthermore,
model’s
capability
predict
long-term
analytically
shown.
Polymers,
Год журнала:
2022,
Номер
14(17), С. 3606 - 3606
Опубликована: Сен. 1, 2022
The
mechanical
properties
of
silicone
foam
will
degrade
when
exposed
to
environmental
loads
such
as
temperature
and
pressure
for
a
long
time.
In
recent
years,
the
variation
law
stress-strain
response
during
aging
process
has
received
more
attention,
but
there
are
few
works
that
quantitatively
analyze
response.
this
work,
we
analyzed
by
constitutive
model.
Firstly,
accelerated
test
rubber
under
long-term
compressive
strain
was
carried
out,
its
compression
set,
stress
relaxation
curves
different
degrees
were
obtained.
Further,
degenerate
trajectory
equations
set
stress-relaxation
addition,
hyper-foam
model
obtained
fitting
curves,
changes
in
parameters
after
studied.
results
show
compressed
exponential
functions
time,
while
existing
research
findings,
found
do
not
change
monotonically
with
increasing
which
first
softens,
then
hardens,
finally
softens.
Additionally,
better
understand
changing
trend
response,
correlation
between
curve
discussed
qualitatively.
Finally,
stage
monotonic
curve,
function
increase
time
Encyclopedia of Polymer Science and Technology,
Год журнала:
2023,
Номер
unknown, С. 1 - 21
Опубликована: Март 15, 2023
Abstract
Fatigue
failure
of
rubber‐like
materials
has
been
often
previously
modeled
with
classical
power‐law
approaches,
however
the
new
generation
physics‐based
fatigue
models,
choosing
proper
model
depends
on
material,
loading
condition
and
computational
cost
users
can
afford.
In
view
high
number
validated
it
is
challenging
for
engineers
to
choose
a
reliable
specific
application.
service
condition,
reliability
elastomeric
components
influenced
by
variety
factors,
ranging
from
environmental
mechanical
loads
compound
properties.
sensitive
applications,
assuring
long‐term
performance
elastomers
subjected
multiaxial
variable
necessary
ensure
durability
system.
The
purpose
this
article
review
different
stressors
that
contribute
associated
modeling
approaches
used
assess
their
strengths
weaknesses.
Additionally,
summarizes
effect
thermal
oxidation,
moisture,
hydrolysis,
radiation
aging
properties
rubber,
which
studied
over
last
50
years.
