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Cylinder section modelling

Posted 2 mai 2013, 22:02 UTC−4 2 Replies

Daniel Wellburn
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Hello all

I wish to model structural mechanics in a section of a cylinder-like geometry consisting of longitudinal bars and radial rigid hoops supporting the bars. The full cylinder is too memory intensive to model an so I have drawn a section of the cylinder only. My question is: what contraints should be used on the end of the hoop sections to simulate the fact that they form a closed loop. I have tried a number of fixed constriants and prescribed displacement conditions but they do not result in reasonable solutions.

Any ideas?

Thanks a lot

Dan
2 Replies Last Post 8 mai 2013, 22:36 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 3 mai 2013, 00:47 UTC−4
Hi

do you have 2D-axi symmetry ? so you could use a simple section and 2D-axi ?

or have you tried to consider beam and/or truss elements, perhaps with shells ? that highly simplifies the geometry and meshing incl DoF's

--
Good luck
Ivar
Hi do you have 2D-axi symmetry ? so you could use a simple section and 2D-axi ? or have you tried to consider beam and/or truss elements, perhaps with shells ? that highly simplifies the geometry and meshing incl DoF's -- Good luck Ivar
Daniel Wellburn
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Posted: 1 decade ago 8 mai 2013, 22:36 UTC−4
Hi Ivar

Thanks so much for your suggestions. I don't have 2D axi symmetry but the beam/truss/shells approach seems like an excellent idea. I will run with that.

Thanks again

Dan
Hi Ivar Thanks so much for your suggestions. I don't have 2D axi symmetry but the beam/truss/shells approach seems like an excellent idea. I will run with that. Thanks again Dan

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