NUMERICAL SIMULATION OF BENDING STEELS USED IN AUTOMOTIVE INDUSTRY WITH EMPHASIS ON SPRINGBACK
Acta Metallurgica Slovaca,
Год журнала:
2024,
Номер
30(1), С. 41 - 46
Опубликована: Март 25, 2024
In
this
work,
the
influence
of
material
models
used
in
FE
simulation
on
springback
prediction
various
steels
is
investigated.
The
aim
work
to
extend
knowledge
base
regarding
car
production.
effect
after
V-bending
operation
was
studied
TRIP,
HSLA
and
EDDQ
steels.
bending
angle
set
90°.
numerical
simulation,
Hill48
Barlat
yield
criteria
were
combination
with
Ludwik's
Swift's
hardening
models.
Achieved
data
from
simulations
compared
evaluated
experimental
test
results.
results
showed
relation
between
mechanical
properties,
mainly
strength.
Higher
values
strength
have
negative
impact
final
bent
part,
thus
increasing
part.
not
identical
experimentally
achieved
most
cases.
Particularly,
when
Swift
criterion
simulation.
Язык: Английский
EXPERIMENTAL DETERMINATION OF THE DRAW BEAD COEFFICIENT OF FRICTION OF CuZn SHEETS IN SHEET METAL FORMING PROCESSES
Acta Metallurgica Slovaca,
Год журнала:
2023,
Номер
29(3), С. 123 - 129
Опубликована: Сен. 25, 2023
In
sheet
metal
forming,
draw
beads
are
used
to
limit
the
flow
of
in
specific
areas
stamping
die.
The
value
coefficient
friction
at
bead
determines
achievement
desired
resistance
displacement.
This
article
presents
results
experimental
tests
for
determining
on
a
using
specially
developed
tribotester.
test
material
consisted
CuZn37,
CuZn30
and
CuZn10
brass
sheets
various
states
hardening.
Investigations
were
carried
out
with
different
roughness
countersamples
sliding
speeds.
addition,
under
conditions
dry
lubrication
surface
LAN-46
machine
oil.
relationships
between
process
parameters
analysed
analysis
variance.
It
was
found
that
decreases
increasing
mean
countersamples.
Lubrication
reduced
by
about
6.2-29.8%
depending
grade
tested
speed.
Язык: Английский