xtv Preface
completeness (and for those
of
you who are reading because your professor/boss forced
you to), a few uses shall be mentioned.
Let's assume you regularly use a few materials
in
all your simulations. Every time you
start a new simulation
in
the
GUT
mode (Abaqus/CAE) you need to open up the materials
editor and enter in material properties such as
the
Density, Young's Modulus, and
Poisson's Ratio and so on for each
of
these materials. You could instead put all
of
these
materials
in
a script. Then all you would need to do is go to File > Run Script ... and your
material database would be populated with these materials in a couple
of
seconds.
Basically you would be using the script to perform a repetitive task to save time. That is
the one use
of
a script, to perform the same task the same way multiple times with
minimal effort. We will in fact look at this example
of
creating materials with a script in
the first chapter.
A more complex use
of
a script is
if
you have a certain part on which you plan to apply
loads and boundary conditions, and you wish to change the loads, constraints,
or
the
geometry
of
the part itself and rerun the simulation numerous times to optimize the
design. Let's assume for example you apply a load on a horizontal cantilevered beam and
you want
to
know how much the beam bends
as
you increase its length. One way to do
this would be to recreate the beam part 7
or
8 times.
If
your simulation has complex
parameters you might have
to
apply sections, loads and constraints to it every time. A
more sophisticated and efficient way to accomplish the same task is to write a script with
the length
of
the beam assigned to a variable. You could then change the value
of
this
variable and rerun the script in a loop as many times as you need to. The script would
redraw the beam
to
the new length and apply the loads and BCs
in
the correct regions
(accounting for the change in location
of
loads and BCs with the geometry). While this
may sound like too much work for a simple beam simulation,
if
you have a more
complex part with multiple dimensions that are all related to each other then remodeling
it
several times wiiJ prove to be very time consuming and a script will
be
the wise choice.
An added advantage
of
a script is that you have your entire simulation setup saved
in
the
form
of
a small readable text file only a few kilobytes in size. You can then email this
text file to your coworker and
a11
he would need to do is run this script in Abaqus. It
would redraw the part, apply the materials, loads, boundary conditions, create the steps,
and even create and run the
job
if
programmed to
do
so. This also has the advantage
of
readability.
If
a coworker takes over your project,
he
does not need to navigate through
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