June 14, 2010
|
RISA-3D,
Plates,
RISA-2D,
New
To
best
understand
how
plates
interact
with
each
other
you
must
first
understand
the
concept
of
Physical
Members.
The
important
thing
to
keep
in
mind
is
that
plates
are
not
physical
members.
A
plate
is
defined
using
either
three
or
four
joints,
and
it
only
connects
to
other
plates
at
those
joints.
Plates
do
not
connect
to
anything
along
their
edges,
or
in
their
interior.
See
the
example
below:
Node
N4
falls
along
the
edge
of
the
bottom
plate,
and
therefore
it
does
not
connect
to
the
bottom
plate.
You
should
always
avoid
having
a
joint
of
any
type
fall
along
the
edge,
or
in
the
interior
of
a
plate.
Usually
submeshing
can
achieve
this
well,
as
shown
below:
Where
a
finer
mesh
is
required
in
some
parts
of
your
model
you
can
use
trapezoidal
plates
to
transition
between
the
coarse
and
fine
mesh.
Notice
how
the
mesh
in
the
example
below
transitions
to
one
twice
as
fine
without
any
plate
joints
falling
along
the
edge
of
other
plates:…
