Hungarian Agricultural Engineering,
Journal Year:
2023,
Volume and Issue:
42, P. 26 - 32
Published: Jan. 1, 2023
The
global
population
has
been
steadily
increasing,
putting
pressure
on
available
resources,
including
agricultural
land.
decrease
of
land
made
it
difficult
to
sustainably
produce
enough
food
feed
the
growing
population.
Global
warming
and
water
issues
have
also
challenging
grow
crops,
with
changing
weather
patterns
scarcity
affecting
yields.
To
address
these
challenges,
there
is
a
need
modernize
technologies.
One
possibilities
improvement
post-harvest
By
gaining
more
knowledge
mechanical
behavior
particulate
materials
using
discrete
element
modeling,
may
be
possible
optimize
technologies
for
processing
storage.
This
could
lead
improvements
in
quality
safety
products
while
reducing
waste
increasing
efficiency.
paper
reviews
key
literature
concerned
applications
DEM
parameters
calibration
particles,
which
generally
are
corn,
rice,
wheat,
soybean,
sunflower
seed
soil
particles.
Processes,
Journal Year:
2025,
Volume and Issue:
13(3), P. 613 - 613
Published: Feb. 21, 2025
The
large
toothed
double-roll
crusher,
as
key
crushing
equipment
for
open
pit
mines,
is
very
necessary
to
analyse
its
performance
at
different
feed
particle
sizes,
compressive
strengths
of
coal,
and
rotation
speeds
rollers.
Firstly,
a
crusher
taken
the
research
object
in
this
paper;
coupling
simulation
model
based
on
DEM-MBD
Ab-T10
breakage
constructed.
validity
verified
through
actual
measurement
data.
On
basis,
under
variable
factors
analysed
by
integrating
comprehensive
tests.
results
show
that
speed
roller
main
influence
factor
when
it
works
25~33.3
r/min.
With
increase
strength
productivity
decreases,
phenomenon
disappears
gradually
33.3~42
Further,
5–20%
size
coal
particles
can
improve
10%
quality
with
discharge
lower
than
300
mm
approximately
25%
crusher.
Finally,
power
density
reduced
mass
percentage
large-sized
increases,
weakened
coal.
AgriEngineering,
Journal Year:
2025,
Volume and Issue:
7(4), P. 105 - 105
Published: April 4, 2025
Efficient
sugarcane
ratooning
management
requires
maintaining
soil
organic
carbon
(SOC)
balance
and
improving
physical
properties.
Retaining
agricultural
residues
applying
fertilizers
are
essential
for
sustaining
SOC
levels.
However,
excessive
compaction
caused
by
heavy
machinery
remains
a
challenge,
no
existing
implements
specifically
designed
to
alleviate
apply
in
ratoon
fields.
This
study
aimed
design,
develop,
evaluate
an
fertilizer
applicator
capable
of
performing
single-step
operation
that
integrates
subsoiling,
application,
mixing.
The
developed
implement
consists
four
main
components:
(1)
pyramid-shaped
hopper,
(2)
two-way
horizontal
screw
conveyor,
(3)
subsoiler,
(4)
disk
harrow
set.
results
indicated
the
specific
mass
flow
rate
is
directly
proportional
size
inversely
PTO
shaft
speed.
optimal
configuration
included
18-inch
set,
10-degree
angle,
inclined-leg
Low3
gear
at
1900
rpm,
which
required
draft
force
12.75
kN.
Field
performance
tests
demonstrated
actual
field
capacity
0.89
ha·h−1
efficiency
66.17%,
confirming
implement’s
effectiveness
conditions
integrating
tillage
with
application.
Agriculture,
Journal Year:
2023,
Volume and Issue:
13(9), P. 1704 - 1704
Published: Aug. 29, 2023
The
discrete
element
method
(DEM)
is
an
effective
tool
for
obtaining
qualitative
and
quantitative
information
on
particle
motion,
which
aids
in
the
design
optimization
of
agricultural
equipment
structures.
accuracy
DEM
simulation
parameters
significantly
impacts
results.
This
study
employed
a
combination
high-speed
camera
measurement,
simulation,
validation
tests
to
determine
material
interaction
property
fertilizer
particles.
basic
(triaxial
size,
bulk
density,
coefficient
static
friction)
coefficients
restitution
between
were
measured
three
varieties.
There
was
significant
difference
angle
repose
various
plates
calibration
values
rolling
friction
particles
optimized
using
Box–Behnken
method.
affected
by
determined
restitution,
friction,
0.323,
0.381,
0.173,
respectively.
error
test
less
than
3.0%,
variation
each
row
consistency
1.68
percentage
points
under
optimal
parameters.
simulations
can
accurately
predict
experimental
findings
this
paper
provide
theoretical
basis
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(4), P. 635 - 635
Published: April 20, 2024
Fertilizer
can
improve
the
yield
of
crops
per
unit
area,
and
uniform
fertilizer
discharge
utilization
rate.
Therefore,
it
is
meaningful
to
performance
fertilizer-discharge
devices
in
order
modernization
level
crop
field
management.
To
address
problems
operational
smoothness,
stability
poor
uniformity
discharge,
other
difficult
encountered
with
strip
devices,
this
study
designs
a
disturbed
strip-discharge
device
vertical
pendulum.
The
main
factors
affecting
were
wedge
angle
push-disturbing
pendulum
bar
(PMPB),
inclination
aided-stirring
pick
(APP),
flow
gap
(FGPB),
operation
frequency
swing-rod
combination
(SRC).
discrete
element
method
(DEM)
was
used
establish
simulation
model
explore
influence
on
coefficient
variation
(CV)
accuracy
(FDA)
as
evaluation
indices.
results
show
that
CV
FDA
were,
priority,
SRC,
FGPB,
PMPB,
APP.
optimal
parameters
after
rounding
follows:
PMPB
45°,
APP
46°,
SRC
188
times/min,
FGPB
4.5
mm.
At
point,
predicted
would
be
10.53%,
3.19%.
Using
for
bench
test
verification,
found
mm,
11.06%,
3.51%.
In
test,
stable
had
good
adaptability
different
fertilizers.
provide
theoretical
reference
development
precision
strip-fertilizer
application
devices.
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(7), P. 1131 - 1131
Published: July 12, 2024
In
order
to
solve
the
traditional
single-spiral
fertilizer
discharger
issue
of
fluctuation
fertilizer-discharge
flow
and
problem
precise
discharge,
innovative
design
a
cantilevered
oblique
placement
fertilizer-discharging
spiral
structure
in
form
an
inclined
was
realized,
which,
through
spiral’s
full
end-filled
extrusion,
uniform
delivery
discharge
achieved.
Discrete
element
simulation
used
compare
characteristics
dischargers,
results
proved
that
effectively
reduced
rate.
Through
theoretical
analysis
preformed
determine
main
parameters
affecting
uniformity
we
identified
tilting
angle
(θ)
distance
from
termination
blade
outlet
(l).
A
two-factor,
five-level
quadratic
generalized
rotary
combination
experiment
conducted
with
two
(θ
l)
as
factors
variation
coefficient
(σ)
indicator.
The
experimental
showed
for
σ,
θ
highly
significant
effect,
l
σ
less
than
8.5%;
when
35.02°
16.87
mm,
performance
better.
bench
relative
error
between
under
this
2.28%.
And
compared
discharger’s
average
increase
80.79%,
effect
better
discharger.
application
controller
developed,
tested
based
on
measured
rate
fitting
equation
combined
show
electronically
controlled
has
deviation
3.12%
preset
value,
which
can
be
regulate
discharged
realize
application,
study
provide
reference
optimal
