Nonlinear vibration of rotor-bearing system considering base-motion and bearing-misalignment
Mechanism and Machine Theory,
Год журнала:
2025,
Номер
206, С. 105933 - 105933
Опубликована: Янв. 21, 2025
Язык: Английский
Vibration features and sidebands investigation of a planetary gear transmission system under misaligned bearing and damaged cage
Measurement,
Год журнала:
2025,
Номер
unknown, С. 116864 - 116864
Опубликована: Янв. 1, 2025
Язык: Английский
Dynamic modeling of a spline-shaft system including time-varying fretting friction
International Journal of Mechanical Sciences,
Год журнала:
2025,
Номер
unknown, С. 110192 - 110192
Опубликована: Апрель 1, 2025
Язык: Английский
Nonlinear vibration analysis of rotor-bearing system with insufficient interference and bearing tilt
International Journal of Mechanical Sciences,
Год журнала:
2025,
Номер
unknown, С. 109966 - 109966
Опубликована: Янв. 1, 2025
Язык: Английский
Modeling of misaligned bearing induced by coupling misalignment and assembly errors and vibration analysis in dual-rotor system
Mechanical Systems and Signal Processing,
Год журнала:
2025,
Номер
230, С. 112656 - 112656
Опубликована: Апрель 5, 2025
Язык: Английский
Study on the Influence of Unbalanced Phase Difference Combinations on Vibration Characteristics of Rotor Systems
Sensors,
Год журнала:
2025,
Номер
25(6), С. 1691 - 1691
Опубликована: Март 8, 2025
Taking
the
cantilever
rotor
of
a
turbine
engine
as
research
object,
dynamic
and
finite-element
model
is
established,
effectiveness
verified
by
test
platform.
The
transfer
function
method
used
to
balance
system
under
unbalanced
excitation,
experiments
prove
that
adopted
in
this
paper
has
good
balancing
effect
effectively
reduces
vibration
rotor.
On
basis,
experimental
tests
simulation
analyses
response
different
phases
difference
combinations
are
carried
out,
influence
phase’s
on
unbalance
analyzed.
results
show
decreases
with
increase
phase
combinations,
amplitude
induced
reverse
combination
smaller
than
in-phase
combination.
work
can
provide
theoretical
basis
for
control
flexible
an
aero-engine.
Язык: Английский
Unbalanced Position Recognition of Rotor Systems Based on Long and Short-Term Memory Neural Networks
Machines,
Год журнала:
2024,
Номер
12(12), С. 865 - 865
Опубликована: Ноя. 28, 2024
Rotor
unbalance
stands
as
one
of
the
primary
causes
vibration
and
noise
in
rotating
equipment.
Accurate
identification
unbalanced
positions
enables
targeted
measures
for
balance
correction,
thereby
reducing
levels
enhancing
operational
efficiency
stability
However,
complexity
rotor
structures
may
lead
to
a
diversity
transmission
paths,
which
complicates
positions.
In
this
paper,
an
experimental
platform
systems
is
established
analyze
change
patterns
displacement
at
four
Additionally,
dynamics
model
developed
based
on
finite
element
method
verified
through
experiments.
Furthermore,
position
Long
Short-Term
Memory
(LSTM)
neural
networks
proposed.
This
utilizes
multiple
sets
measured
response
data
simulated
from
train
LSTM
network,
achieving
precise
various
rotational
speeds.
The
research
results
indicate
that
under
subcritical,
critical,
supercritical
speeds,
accuracy
reaches
95.5%,
while
remains
high
level
90.5%.
These
fully
validate
effectiveness
proposed
method,
providing
new
insights
technical
means
identifying
Язык: Английский
Modeling and Nonlinear Dynamic Characteristics Analysis of Fault Bearing Time-Varying Stiffness-Flexible Rotor Coupling System
Mathematics,
Год журнала:
2024,
Номер
12(22), С. 3591 - 3591
Опубликована: Ноя. 16, 2024
There
is
a
complex
dynamic
interaction
between
the
aero-engine
bearing
and
rotor,
resulting
time-varying
system
parameters
have
an
impact
on
nonlinear
characteristics
of
rolling
bearing-flexible
rotor
system.
In
this
study,
stiffness
transient
response
flexible
considered.
The
Newmark-β
integral
method
used
to
solve
equation,
relationship
load
studied.
vibration
strength
analyzed,
influence
damage
size
time
domain
signal
energy
disc
analyzed.
results
show
that
model
established
in
paper
can
accurately
reflect
rotor.
With
extension
damage,
attenuates,
intensity
excitation
force
increases,
transmitted
disc,
which
affects
motion
stability
disc.
Язык: Английский