CATIA V5
CATIA V5
(OP)
Hello,
Do you recommand Generative Structural Analysis that CATIA V5 has for FEA tests?
Thank you
Do you recommand Generative Structural Analysis that CATIA V5 has for FEA tests?
Thank you
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RE: CATIA V5
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: CATIA V5
The problem as I see it, others will surely disagree, is that anyone who can drive Catia V5 can run analyses using the GPS module, regardless of how little or how much they know about stress analysis, and the correct procedures for setting up a meaningful analysis. With probably 99% certainty a typical GPS analysis will have loads applied at one end of a model with the other end fully clamped. Thus every component has become a cantilever! Reverse the loaded and clamped ends to see a different set of results!
Try explaining free body diagrams of applied loads, fully load balanced analyses with minimal supports and again with 99% certainty you'll get a blank stare back from the typical CAD jockey.
Sadly though very few people seem to be aware that once you include the additional advanced modules of Catia V5 it becomes a truly world class FEA system that allows the user to apply complex variable pressure loadings, fully balance their loads (as per the free body diagram) and apply the minimal 3-2-1 support method. The GPS module on it's own is too simplistic, probably for commercial reasons where ease of use is the paramount objective to the detriment of reality as it will be wrongly compared against rival products on this point alone by many prospective users.
RE: CATIA V5
i touched GPS some years back, and maybe they've improved some of these features. you can always address some of the concerns by doing patch tests on your own, and maybe using a demo version to see how it fits your needs.
good luck
RE: CATIA V5
RE: CATIA V5
Like any other FE software you can (and should always) use tet10 elements. The only limitation on constraints and loading is the knowledge and experience of the guy driving the program, this is where a good understanding of free body diagrams and how to correctly apply BC's to a FE model is essential, otherwise you get the "every component I ever model is a cantilever" approach!
For optimising designs where a linear static analysis is adequate, then GPS (+EST, FMD, FMS and other modules) is probably the most advanced and powerful cad embedded FEA system available and dare I say it superior to many standalone FE systems. Unfortunately it comes at a price.
RE: CATIA V5
A general question to all of you: How often would the CAD engineer really need to do an analysis with multiple load cases, strangely distributed forces, material imperfections and weird boundary conditions?
RE: CATIA V5
This could open a big can of worms concerning where the line is drawn between designers and analysts. My answer would be not often! Companies who need analysts have them. If they don't they will shortly after they make have product failures.
RE: CATIA V5
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: CATIA V5
Can anyone tell me