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Thick Cylinder under pressure

Posted Jul 23, 2013, 1:04 p.m. EDT 2 Replies

Brahmarishi Raj
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Plz tell me how can i model a thick cylinder under pressure as attached in the file.

I made a 2D model, defined material, chose "solid mechanics".
Applied a "boundary load" at inner circle boundaryand other at outer circle boundary.


I got the error "failed to find a solution" The relative error (...) is greater than the relative tolerance............

Regards
Brahmarishi

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2 Replies Last Post Jul 24, 2013, 4:33 a.m. EDT
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Jul 23, 2013, 2:16 p.m. EDT
Hi Brahmarishi,

If you model the full cylinder in a static (stationary) analysis you will have a singular system with rigid body modes. That could be the problem. In that case you should model a quarter cylinder instead and apply symmetry conditions on the 2 new boundaries.

Nagi Elabbasi
Veryst Engineering
Hi Brahmarishi, If you model the full cylinder in a static (stationary) analysis you will have a singular system with rigid body modes. That could be the problem. In that case you should model a quarter cylinder instead and apply symmetry conditions on the 2 new boundaries. Nagi Elabbasi Veryst Engineering
Brahmarishi Raj
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Posted: 1 decade ago Jul 24, 2013, 4:33 a.m. EDT

Hi Brahmarishi,

If you model the full cylinder in a static (stationary) analysis you will have a singular system with rigid body modes. That could be the problem. In that case you should model a quarter cylinder instead and apply symmetry conditions on the 2 new boundaries.

Nagi Elabbasi
Veryst Engineering




Thank you very much, i will get back to you if i have other problems/doubts.

Regards
Brahmarishi
[QUOTE] Hi Brahmarishi, If you model the full cylinder in a static (stationary) analysis you will have a singular system with rigid body modes. That could be the problem. In that case you should model a quarter cylinder instead and apply symmetry conditions on the 2 new boundaries. Nagi Elabbasi Veryst Engineering [/QUOTE] Thank you very much, i will get back to you if i have other problems/doubts. Regards Brahmarishi

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