Hello Marco,

Of course I agree with you. I should have said : "Under the assumption that
the vendors implement the standard and strictly comply with it, [blabla]". I
confess it's a strong assumption! But necessary for anyone believing in the
STEP standard and its potential to save time and money. There's still a huge
amount of work to be achieved, but let's keep optimistic.

All the best,

Thomas

2010/10/11 M. Nawijn <naw...@gmail.com>

> Hello Thomas,
>
> I must agree with you that in general STEP would be the preferred option
> to exchange geometry. I have had this kind of discussion many times. There
> are however some subtleties. One is that it the enriched semantics of STEP
> is
> of no use when the target application does not support it. This is
> still the case with
> many industry standard FEA programs for example.
>
> In the end it really depends on the quality of the exporters and
> importers. We have
> had examples of very complex CAD (single part) models that provided a
> better quality
> for meshing purposes when imported through IGES than through STEP.
>
> Kind regards,
>
> Marco
>
>
> On Mon, Oct 11, 2010 at 2:36 PM, Thomas Paviot <tpav...@gmail.com> wrote:
> > Jens,
> > By default, pythonOCC exports STEP files using the AP214 schema. After
> you
> > export the step file with Abaqus, the schema used is not the AP214
> anymore
> > but the AP203 : when dealing with standard files import/export issues,
> the
> > problems may arise from the exporter and/or the importer, and it's not
> > obvious to find out the responsible of the issue. Using the same STEP
> schema
> > for import/export ensures the semantics consistency of the exchange
> process.
> > Is there any option, in Abaqus, to use the AP214 instead of the AP203?
> > If you use the latest pythonOCC release (0.4), you can't change the
> default
> > behavior (AP214) of the STEP exporter. However, the latest revision of
> the
> > svn trunk makes it possible (see this
> > discussion:
> http://www.mail-archive.com/pythonocc-users@gna.org/msg01462.html).
> > At last, I'm not sure whether or not the exchanges based upon the IGES
> > standard are still a good way to proceed. I would say 'no', since the
> STEP
> > scope is much wider than the IGES one (which is only intended to
> geometry)
> > and, as a consequence, more suitable for industrial processes.
> >
> > Regards,
> > Thomas
> >
> > 2010/10/11 Jens Cornelis <jens.corne...@iwm.fraunhofer.de>
> >>
> >> Hi Jelle, hi Thomas,
> >>
> >> btw: exporting the same shape to a IGES file and imorting in Abaqus
> >> works fine. Abaqus imports it as a solid, just as expected. The issue is
> >> only when exporting to STEP (the preferred file format.)
> >>
> >> Maybe this information is somehow interesting for you?
> >>
> >> Cheers
> >>
> >> JC
> >>
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> >
> >
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> >
> >
>
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