February 6, 2012
|
RISA-3D,
Walls,
Plates,
New
Below
is
a
model
of
a
concrete
flat
slab
(represented
by
a
plate)
which
is
bearing
on
two
columns
and
a
skewed
wall.
As
we
know
from
plate
meshing
we
will
obviously
have
to
submesh
this
slab
in
order
to
get
accurate
results.
However
if
we
do
an
ordinary
submesh
(as
shown
below)
the
plates
will
not
actually
connect
to
the
wall.
The
reason
the
plates
are
not
connecting
to
the
wall
is
that
plates
only
connect
to
elements
at
their
corners,
and
the
only
place
where
a
plate
corner
touches
the
wall
is
at
the
two
ends
of
the
wall.
You
can
confirm
this
by
looking
at
the
deflected
shape
below
that
the
wall
(green)
is
now
poking
up
through
the
plates
(blue)
since
they
are
not
connected
along
the
span
of
the
wall.
The
way
to
handle
this
situation
is
to
have
a
smarter
mesh.
The
Automesh
tool
can
be
used
to
connect
the
plates
to
the
wall,
but
we
must
give
that
tool
some
control
points
to
work
with.
The
first
step
in
the
example
here
is
to
delete
the
plates,
since
the
automesh
tool
will
draw
new
plates
for
us.
The
four
nodes
which
define
the…
