What's the best way to connect Parallel mid-surfaces ?
Altair EmployeeHi,
I’m a beginner with altair Hypermesh and today I try to connect two parallel surfaces together. those midsurfaces are exctracted from the model shown below (the plates are considered to be welded together in reality).My goal is to mesh those surfaces and recreate the contact in yellow shown on the second picture. For the moment, due to the mid-surface extraction, I have a gap between the two planes. should I use RBE2/RBE3 elements to connect them ? My goal is to have a contact that behave as much as possible as if the two planes are welded.
Thank you very much for the help
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Answers
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Do you know how they are welded in fact?
Spot weld?
Arc weld?
Shape/size of weld?
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Hi
Please go though the page no 179-181 form ebook , the link for the same is given below
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They are Arc-welded but i don't know the exact shape of the weld. the size is all along the contact between the two bars (10 cm long)
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I tried to connect the planes by using the tool 'imprint' (mesh edit). I obtain the patter shown on the first picture with this tool and then i used the theory from the pages 179-181 and connected those two parallel planes by vertical ones (second picture). Is it the right way to connect those two welded planes ?
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why there are so many tria elements? I think quads are better.
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This is what i obtained with the imprint tool... so according to you, it is better to use this model ?
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Yes,
did you learn Finite Element Method in your university?
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I did, but it was only about the theory...This is the first time I use a software like hypermesh (before I was using automeshing tools without thinking about the quality of my mesh). Actually, I practice a lot because i found out recently that finite element analysis is extremely interesting so I want to understand it as much as possible. My next goal will be the understanding of optimization with Optistruct. I already red the free E-books about Hypermesh and Optistruct but sometimes years of practice are way more important than just reading theory. I asked those trivial questions here to have some experimented users feedback and to be sure it was the most efficient thing to do
Thank you for all those answers Tinh and Pooja S !
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No, they are not actually trivial because ones have to learn so deeply to understand them
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I am not sure whether above is most efficient way to model a weld, others could use RBE2, RBE3, hexa, contact,... just somehow ensure that results conform to experiments.
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