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JMF11
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I implemented a model based on the advices given above (attached below): - quad dominant mesh, - quadatric elements (line3, tri6, quad8) - non-linear static analysis - slowly load the shell surface, and then after start to play with the third corner…
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There are different types of sails: - main sail: fully attached to the mast. It is the type I'm interested in, - jib: triangular one "attached" to a cable running from the top of the mast to the front of the boat, - Spinnaker: big very flexible sail…
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Thanks a lot for all the explanations and the tip for creating line elements on shell edges. I will try this evening (end of leaves today, so now back to normal work). I will also try to work with quad dominant meshes of quadratic elements. As th…
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Hi, thanks a lot for the feedbacks, and hints. As I run the free version of the software, as hobbyist, I can' solve the models from prop-design. So I will try redo it within the 1000 nodes limit. As my testing of the mast alone did not, with line2…
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Thanks a lot cwharpe for the indication. It was under my nose, but I had not seen it. True that it was written (I'm using v16), but was only looking at categories I had alread used in previous simulations. I can now move forward with those indicati…
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With attachment
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Thanks a lot Victor for the expalantion and the tip. I understand now and you show how to proceed. It works. Thanks a lot for letting people like me use use a powerful tool as Mecway to learn and discover. If I can, I vould be happy to play with yo…
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Understood, thanks for the explanation. This can be the issue with Opensource efforts. More perspectives, less coordination, less consistency... I try tyo find my way between the different wokbench and determine something that works for me. But it …
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Hello, I'm all but an expert here, as hobbyist. I did my basic CAD learning on Fusion360, but the constant evolution of the hobbyist plans turned me to FreeCAD, which I had discarded at the beginning. At the end, even if not as consistent as Fusion…
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Thank you Victor for those indications. They are helpful to better understand what is to be looked at. I will explore the options you propose. In the simple cases I tried to work on, I had the feeling that I was not in above cases: - constraining a…
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They do it for modern sail design (bigger yacht or olympics) :-) I will re-read the calculix golden rules. Do you have one especially in mind ? Windsurfer sails are pretty optimized now, But some experts worked on models and simulation to optimize…
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Hello Disla, Thanks a lot for taking the time to answer. I agree with all your points. I already played with the mast simulation to have the "skeleton" OK. The issue is with the sail. And this is clearly my point here. If I don't understand the w…
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Hello, Disla pointed me this thread some time ago to share some directions to simulate sails. I played with the proposed examples and it is encouraging. But this definitively looks like not trivial FEA use cases, often on the verge of convergence i…
