in today's tip we're going to talk about
a new feature in Creole 5.0 topology
optimization topology optimization has
been around for about 20 years but
typically as a standalone solution the
reason we're talking about it here today
is because PTC has embedded a solution
from V R and D directly into their
flagship CAD product let's take a look
as Todd craft shows us the ins and outs
of this new solution today's topic is
going to be topology optimization this
is part of creo 5.0 this is a brand new
partnership that ptc has with a company
called v R&D Vander Plaats research and
development and topology optimizations
been around for many years over 20 years
and there's been a few partners that
have worked with PTC in the past and
what PTC is done now is embedded this
technology from VRD right inside of creo
5.0 so check it out there's some videos
here from BRD there's also some videos
on YouTube and also inside the PTC help
there's an excellent section on topology
optimization that you can see in 305 it
goes through all the setup all the bells
and whistles that that topology
optimization offers and also under
additional info on
here and you can really see everything
that's happening in in this technology
okay so that's for your reading if you
wish to but let's just kind of show you
how it how it works this is a simple
little clutch shoe example it goes from
the model like this to a model like this
that's been optimized now the key thing
that creo 5 does is it will not just
optimize the geometry for you but it
will semi automatically reconstruct the
geometry notice what happens is it
creates the facet model we go ahead and
just kind of drag this up like this
here's the facets like this but then
what happens that it will go ahead and
convert those facets into a freestyle
feature and then you end up with smooth
geometry that you can then take and run
with so let's go ahead and show you how
this works with a different model this
is a little block here with a couple of
holes on the top and a hole in the
bottom and to get topology optimization
simply applications topology
optimization it's in beta right now
Creole 5 and 10 it will be a the release
version you set up your loads of
constraints and it's also using H
elements here when I click on mesh here
you'll see it's not using the creo
simulate elements the polynomial
elements it's using true H elements here
okay so that's the elements you can
change the the quality if you want to
but that's pretty much fine the way is
set up here for us so it's just erase
that so we can see it a little better
and what you're going to do is set up I
think it's a nice idea to set up a
volume region first here I have a volume
region where I'm saying everything
that's magenta colored can be elements
can be removed from that area but
everything inside the gray can't okay
that's a good idea to do that too to
brew you know not give it full freedom
to reduce elements everywhere so once
you have your volume region then you can
go ahead and set up your topology
objects this is pretty simple and you'll
notice on the videos you'll watch on
YouTube and and the our DS website it's
gonna use the same type of questions and
the same type of techniques here first
is a topology region definition and I'm
gonna let the topology region be that
volume okay you also have the option to
use fabrication constraints up to three
of them you can define a mirror
constraint a fill direction
a cyclic condition radial those are all
possible options I chose none in this
case I left the rest of defaults and
again all these options are very
thoroughly explained in the on the PTC
Help section next is a design objective
most typically you can use strain or
stress I'm gonna use strain energy in
this case okay hit okay to there and
then lastly we're going to use this
design constraint and we're gonna use a
mass fraction and I'm gonna give it a
upper bound of 0.15
I also define this in the first topology
region I defined a mass fraction of 0.15
there too which really just says that
I'm okay with 85% of the elements going
away okay that's my that's my preference
and that's it you click on the Go button
it runs for about this in this case
about 20 minutes on my machine and then
I after it's done I have the option of
um showing the results or also using
this option here called propagate
geometry and what propagate geometry
does is that converts that faceted data
into a freestyle feature which let's go
ahead and show you what that looks like
right here and you'll see it's um it
ended up with something like this first
okay notice it it had some extra little
outliers that I went ahead and and fixed
with the freestyle feature that's why
it's called semi automatic okay so it it
goes to the freestyle feature and then I
went to that in there and just edited
the the freestyle feature which is no no
big deal I just went ahead and deleted
some some surfaces and I connected it
connected I'm back together and you can
go ahead and edit this this this
freestyle feature I also believe I made
this area thicker okay so you can then
take it and use a freestyle feature of
just pulling and tugging edges points
and surfaces around and then you end up
taking this in to simulate then
and then I went ahead and looked at
results I had the same load same type of
constraints let's just look at stress
and something like this and here we have
our final result deformed results so
that's fantastic taking it from a
optimized model and converting it to
geometry semi-automatically
you know 90% of the way almost 100
percent of way sometimes is really a
differentiator so if you want to see
this from the AC go ahead and contact
your sales person and we'd love to come
out and show you more about this thank
you I hope you like what you just saw
we're pretty excited about the
technology if you like this video please
don't forget to hit subscribe and give
us a like if you have any comments or
questions drop them down in the comment
section below
talk to you soon
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