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3-Visitor

## Singularities in FEM results!

Hello Everybody,

I am working with Pro mechanica, I am seeing singularity in my results. what is meant by singularities? It's the peak stress as for I know, but still I could not understand exactly. Can anyone give me a clear vision to that.

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11-Garnet
(To:ptc-5197663)

A singularity is a point, usually with a load applied which means that the stress is undefined or infinite.

http://en.wikipedia.org/wiki/Mathematical_singularity

If you have a singularity, the analysis cannot converge, because decreasing the element size or increasing the polynomial order will keep increasing the calculated stress, with no limit.

3 REPLIES 3
11-Garnet
(To:ptc-5197663)

A singularity is a point, usually with a load applied which means that the stress is undefined or infinite.

http://en.wikipedia.org/wiki/Mathematical_singularity

If you have a singularity, the analysis cannot converge, because decreasing the element size or increasing the polynomial order will keep increasing the calculated stress, with no limit.

4-Participant
(To:ptc-5197663)

Did you try to search for "singularities" in the Help Center ?

The explanation found in the Help Center is quite clear.

3-Visitor
(To:ptc-5197663)

Thank you so much!

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