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pberry
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Comments
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Thank you for all the feedback. It is much appreciated. It sounds like it's not unreasonable to do this, but the path isn't going to be as quick and easy as I would like. The application seems locked up (the PC still responds otherwise), but prev…
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I think this is still an appropriate thread for this, so... To begin with I want to acknowledge that the program claims to be good for "up to 1 million nodes". And that it does great for that and even more. But.... I keep running into ge…
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Thanks for the beta. Looks like it will salvage some of those "almost good" meshes.
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Hi Sergio, thanks for working on this for me! It seems that I painted myself into a corner early on, with certain choices that I made while adapting the geometry for modeling. At this point, it's a bit of a duck-billed platypus. I'll start over …
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Wow, looks like 50 ways to disintegrate your turbine! Is this saving compute resources, or just speeding up creation of the geometry?
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The STEP should be attached for your meshing enjoyment. This is from a significantly scaled down version of the part, and then is only 12th of that. I guess the thin wall is what's killing me. However, buckle resistance with maximum specific stre…
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Sometimes a bigger hammer is the most appropriate solution. Other times it's just fun to own a giant hammer. Not sure which applies here. BTW, used/good hardware on ebay can be surprisingly inexpensive. Yes, I would like to try out the early versi…
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John, It seemed to be struggling in a lot of places....too many to deal with manually. Even after meshing left only 1 red X, I could see a lot of severely distorted elements. I'm not sure that I can de-feature it further to reduce transitions, but…
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Is that a cyclic symmetry example? I just saw that today. Thank you, Paul
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Thank you for the responses! Because of the goal of the analysis, it seems to me that I can't use increasing density or using different element transitions at areas of special interest. The frame is all non-linear curves, and essentially 'everywhe…
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Looks like it does. I'll give it a try. Thank you!
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Those elements no good? I was just happy to finish meshing without a screen full of red Xs. The cross section of that piece isn't all that different from the parts which meshed 'normally'. It seems that gmsh can be orientation sensitive in how it …
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Thank you for the replies. Victor, yes it is feature-rich, but I'm not sure how that I would significantly defeature it without altering its' fundamental behavior. It is a lattice of cables which both transfers load from a covering membrane to the…
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So I believe that I fixed the model issues. I had to mesh the large part as a solid instead of surface (only tension is relevant for that part). Mecway indicates the size is now over 2M nodes and 1M elements, although CCX reports the same number f…
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The last time I compiled anything it was sometime in the 20th century! But the build instructions made it easy. After setting the environment variables and pointing Mecway to the new .exe, I was off. Now to fix the problems with my model so it wi…
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No, I thought I had recently updated, but I was on V19. I have a large model (1.8M nodes) with bonded contacts which was applying constraints for about 2 weeks. The PC finally ran out of memory (not P-9) when I tried running another app. I have t…
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I'm getting the P-9 error, but there is no option in the labs to adjust memory. Version 21. Did this option move, or get eliminated?
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Victor, Thanks for a powerful and accessible tool. I have a few usability suggestions related to selecting geometry: 1. Selecting many disconnected geometry or element faces can be difficult because the rotate and zoom performance is diminished w…
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Yes, that did it. Thank you
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Tension only elements are convenient for quickly modeling a cable to at least get an idea of how the structure will behave when stayed, but they are invalid for 3D buckling analysis. Is support for this possible, or is there some basic reason that n…
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Thank you for the reply, I was hoping I could predefine the the hot shape, but I suppose that's an unusual approach. To apply the prestressing load to produce the final shape would require that I also model the cable stays. In the past I have had…
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Very nice, I think that will work for me. Thank you, Paul
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Is there a way to pre-tension a flexible member? The structure consists of flexible poles that are straight until assembled at which time they are arched. The flexing increases stiffness and will affect how it moves when loaded. I'm imagining a w…
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Ok, I'll test it out on something simple to see how the fabric behaves. Thanks.
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Thanks for the replies. This will save a huge amount of trial-and-error time for me. I'm assessing various frame geometries and pole designs. I'll be taking the models to failure to determine how light I can make the assembly. To start, I'll be a…
