[GiDlist] Gidpoints in Hexahedra element

[Jonas Forssell]

Hi,

I'm running the latest beta 6.2.0d of GID.

I want to show data on hexahedra elements with 8 nodes and 8 integration
points, but the
output looks like the position of the gausspoints are not according to my
assumption
(gausspoint 1 close to node 1 and so on).

Is there somwhere an explanation on this?

Thanks
/Jonas Forssell, Gothenburg, Sweden


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[Miguel A. de Riera Pasenau]

Hello,

Yes, the gauss internal gauss points used for hexahedrals are the ones
showed in the following picture, which corresponds to the gauss points 'PG 8 int'
of the attached example 'hex.msh/.res'.

To get the order you want, you can enter the natural coordinates in the
order you need, like the gauss points 'PG 8 given' in the same example file.

As the results values are the numbers of the gauss points, when you look at
the 'results labels', you will see the number of the gauss point.

the gauss points pixtures for 3d elements will be add very soon to the manual.

thanks

miguel

Jonas Forssell wrote:

Hi,

I'm running the latest beta 6.2.0d of GID.

I want to show data on hexahedra elements with 8 nodes and 8 integration
points, but the
output looks like the position of the gausspoints are not according to my
assumption
(gausspoint 1 close to node 1 and so on).

Is there somwhere an explanation on this?

Thanks
/Jonas Forssell, Gothenburg, Sweden

_________________________________________________________________
MSN Photos is the easiest way to share and print your photos:
http://photos.msn.com/support/worldwide.aspx

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--
--------------------------------------------------------------------------------
Miguel A. de Riera Pasenau miguel at cimne.upc.es http://gid.cimne.upc.es
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mesh "hexahedra 8" dimension 3 elemtype hexahedra nnode 8
coordinates
1 0.0 0.0 0.0
2 1.0 0.0 0.0
3 1.0 1.0 0.0
4 0.0 1.0 0.0
5 0.0 0.0 1.0
6 1.0 0.0 1.0
7 1.0 1.0 1.0
8 0.0 1.0 1.0
end coordinates
elements
1 1 2 3 4 5 6 7 8 1
end elements

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GiD Post Results File 1.0

GaussPoints "PG 8 int" elemtype hexahedra "hexahedra 8"
Number of Gauss Points: 8
Natural Coordinates: Internal
End gausspoints

GaussPoints "PG 8 given" elemtype hexahedra "hexahedra 8"
Number of Gauss Points: 8
Natural Coordinates: Given
-0.577350269189626 -0.577350269189626 -0.577350269189626
0.577350269189626 -0.577350269189626 -0.577350269189626
0.577350269189626 0.577350269189626 -0.577350269189626
-0.577350269189626 0.577350269189626 -0.577350269189626
-0.577350269189626 -0.577350269189626 0.577350269189626
0.577350269189626 -0.577350269189626 0.577350269189626
0.577350269189626 0.577350269189626 0.577350269189626
-0.577350269189626 0.577350269189626 0.577350269189626
End gausspoints

result "prueba PG" "test" 1 Scalar OnGaussPoints "PG 8 int"
values
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
end values


result "prueba PG" "test" 1 Scalar OnGaussPoints "PG 8 given"
values
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
end values