Issues with mesh element type(lower order elements)

1

Hello everyone,
I have been trying to run the consolidation examples by using ‘hydro_mechanics’ process with my own mesh file generated using GMSH but it gives following error.

wechat_2024-06-12_103823_329
wechat_2024-06-12_103823_329748×598 72 KB

As far as I know maybe the hydro_Mechanics process needs a mesh with higher order elements.If I prefer to use lower order elements,what should I do.

Thanks

2

Hi tachyonist,

it looks like you are trying to simulate the HM process on a 1D mesh (“…LineRule…”), or on a mesh that contains line elements.

HM in OGS only supports 2D and 3D meshes. In fact, all mechanics related processes in OGS only work on 2D and 3D meshes.

Best regards,
Christoph

3

Thank you Christoph,

upon hearing your suggestions,I’ve successfully simulated the HM process with 2d nine-node quadrilateral element and six-node triangular element.

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image1542×785 35.9 KB

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image1545×783 51.7 KB

furthermore I find ‘QuadRule4’ ‘TriRule3’ element in source code so I’m trying to simulate with 2d four-node quadrilateral element or three-node triangular element,
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image181×841 39.2 KB

then I encountered the problem described earlier,could you please give me some advice.

Best regards,
tachyonist

4

I realize that I forgot to change the prj accordingly, and the problem has been fixed.

Many thanks for your help,Christoph.