1.2. Element type REFACTOR


Names and IDs

At present, DAMASK incorporates ten different types of element geometries. The table below lists the element types and their equivalent IDs in MSC.Marc and Abaqus. For a detailed information about the characteristics of each element refer to [1] or [2].

Element geometry ID Dim Element type 3D view
DAMASK MSC.Marc Abaqus
Element Geometry
1 1 6   2 triangle (plane strain) still 001.gif
2 2 125   2 triangle, second order isoparametric (plane strain) still 002.gif
3 2 11 CPE4 2 arbitrary quadrilateral (plane strain) still 003.gif
4 2 27 CPE8 2 eight-node distorted quadrilateral (plane strain) still 004.gif
5 3 134 C3D4 3 tetrahedron, linear still 005.gif
6 4 127   3 tetrahedron, quadratic still 006.gif
7 4 136 C3D6 3 pentahedral, linear still 007.gif
8 4 117 C3D8R 3 hexahedral, linear (reduced integration) still 008.gif
9 4 7, 57 C3D8, C3D20R 3 hexahedral, linear; hexahedral, quadratic (reduced integration) still 009.gif
10 4 21 C3D20 3 hexahedral, quadratic still 010.gif


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Features

Figure 1: element 9: three-dimensional arbitrarily distorted brick.

Any element being incorporated has the same geometrical main features. 1 shows these features for the element ID 9. The eight corners represent the nodes having the numbers from 1 to 8. Each of these main nodes have an integration point (not shown in the figure) attached to its site. These are where all the kinematic calculations take place. It is worth to mention that for MSC.Marc the numbers of the integration points (IP) take the same value of their attached nodes with the exception that IP numbers of 3 and 4 are switched with each other as well as numbers 7 and 8. A numbering of the six faces (in this example) is necessary for the calculations. This is being illustrated with red in the figure. An introduction of the so-called subnodes was also essential to fully define all IP volumes. In our example the number of the subnodes are 19 taking the numbers from 9 to 27. In general all other used elements have the same main features of nodes, subnodes, integration points, and faces. They differ in the geometry and the number of components per each feature.


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Application

A local coordinate system is defined with 3 linearly independent directions. It is sorted in (+x), (+y) and (+z) directions related to (1-2), (1-4) and (1-5) directions, respectively.


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References

[1]
MSC.Marc user’s manual, Volume B: Element Library, 2010
[2]
Dassault Systèmes.Abaqus analysis user's manual, Volume IV: Elements, Version 6.10., 2010

Topic attachments
I Attachment Action Size Date Who Comment
animated_001.gifgif animated_001.gif manage 143 K 25 Mar 2013 - 14:08 MaheshBalasubramaniam animated gif of 2D triangle (plane strain) element (damask id: 1)
animated_002.gifgif animated_002.gif manage 174 K 25 Mar 2013 - 14:10 MaheshBalasubramaniam animated gif of 2D triangle, second order isoparametric (plane strain) element (damask id: 2)
animated_003.gifgif animated_003.gif manage 190 K 25 Mar 2013 - 14:34 MaheshBalasubramaniam animated gif 2D arbitrary quadrilateral (plane strain) element (damask id: 3)
animated_004.gifgif animated_004.gif manage 230 K 25 Mar 2013 - 14:23 MaheshBalasubramaniam animated gif of 2D eight-node distorted quadrilateral (plane strain) element (damask id: 4)
animated_005.gifgif animated_005.gif manage 263 K 25 Mar 2013 - 15:03 MaheshBalasubramaniam animated gif file of 3D tetrahedron, linear element (damask id: 5)
animated_006.gifgif animated_006.gif manage 426 K 25 Mar 2013 - 15:09 MaheshBalasubramaniam animated gif file of 3D tetrahedron, quadratic element (damask id: 6)
animated_007.gifgif animated_007.gif manage 556 K 25 Mar 2013 - 15:24 MaheshBalasubramaniam animated gif file of 3D pentahedral, linear element (damask id: 7)
animated_008.gifgif animated_008.gif manage 386 K 25 Mar 2013 - 15:32 MaheshBalasubramaniam animated gif file of 3D hexahedral, linear (reduced integration) element (damask id: 8)
animated_009.gifgif animated_009.gif manage 792 K 25 Mar 2013 - 15:37 MaheshBalasubramaniam animated gif of 3D hexadral, linear (reduced integration) element (damask id: 9)
animated_010_1.gifgif animated_010_1.gif manage 1 MB 25 Mar 2013 - 15:49 MaheshBalasubramaniam animated gif of 3D hexadral, quadratic element (damask id: 10)
damask_001.pdfpdf damask_001.pdf manage 10 K 21 Mar 2013 - 17:15 MaheshBalasubramaniam sketch of 2D triangle (plane strain) element (damask id: 1)
damask_002.pdfpdf damask_002.pdf manage 11 K 21 Mar 2013 - 17:15 MaheshBalasubramaniam sketch of 2D triangle, second order isoparametric (plane strain) element (damask id: 2)
damask_003.pdfpdf damask_003.pdf manage 11 K 21 Mar 2013 - 17:16 MaheshBalasubramaniam sketch of 2D arbitrary quadrilateral (plane strain) element (damask id: 3)
damask_004.pdfpdf damask_004.pdf manage 12 K 21 Mar 2013 - 17:17 MaheshBalasubramaniam sketch of 2D eight-node distorted quadrilateral (plane strain) element (damask id: 4)
damask_005.pdfpdf damask_005.pdf manage 19 K 21 Mar 2013 - 17:18 MaheshBalasubramaniam sketch of 3D tetrahedron, linear element (damask id: 5)
damask_006.pdfpdf damask_006.pdf manage 22 K 21 Mar 2013 - 17:18 MaheshBalasubramaniam sketch of 3D tetrahedron, quadratic element (damask id: 6)
damask_007.pdfpdf damask_007.pdf manage 23 K 21 Mar 2013 - 17:20 MaheshBalasubramaniam of 3D pentahedral, linear element (damask id: 7)
damask_008.pdfpdf damask_008.pdf manage 21 K 21 Mar 2013 - 17:21 MaheshBalasubramaniam sketch of of 3D hexahedral, linear (reduced integration) element (damask id: 8)
damask_009.pdfpdf damask_009.pdf manage 24 K 21 Mar 2013 - 17:52 MaheshBalasubramaniam sketch of 3D hexadral, linear element (damask id: 9)
damask_010.pdfpdf damask_010.pdf manage 25 K 21 Mar 2013 - 16:43 MaheshBalasubramaniam sketch of of 3D hexadral, quadratic element (damask id: 10)
mesh_element_1.pdfpdf mesh_element_1.pdf manage 324 K 31 Oct 2012 - 08:44 NaderZaafarani Representation of element 1
mesh_element_1.pngpng mesh_element_1.png manage 130 K 31 Oct 2012 - 09:24 PhilipEisenlohr  
mesh_element_9.pdfpdf mesh_element_9.pdf manage 362 K 04 Dec 2015 - 23:40 PhilipEisenlohr Representation of element 9
mesh_element_9.pngpng mesh_element_9.png manage 171 K 04 Dec 2015 - 23:41 PhilipEisenlohr Representation of element 9
still_001.gifgif still_001.gif manage 2 K 25 Mar 2013 - 17:21 MaheshBalasubramaniam still of 2D triangle (plane strain) element (damask id: 1)
still_002.gifgif still_002.gif manage 2 K 25 Mar 2013 - 17:04 MaheshBalasubramaniam still of 2D triangle, second order isoparametric (plane strain) element (damask id: 2)
still_003.gifgif still_003.gif manage 3 K 25 Mar 2013 - 17:26 MaheshBalasubramaniam still 2D arbitrary quadrilateral (plane strain) element (damask id: 3)
still_004.gifgif still_004.gif manage 4 K 25 Mar 2013 - 17:27 MaheshBalasubramaniam still of 2D eight-node distorted quadrilateral (plane strain) element (damask id: 4)
still_005.gifgif still_005.gif manage 4 K 25 Mar 2013 - 17:29 MaheshBalasubramaniam still of 3D tetrahedron, linear element (damask id: 5)
still_006.gifgif still_006.gif manage 7 K 25 Mar 2013 - 17:33 MaheshBalasubramaniam still of 3D tetrahedron, quadratic element (damask id: 6)
still_007.gifgif still_007.gif manage 8 K 25 Mar 2013 - 17:34 MaheshBalasubramaniam still of 3D pentahedral, linear element (damask id: 7)
still_008.gifgif still_008.gif manage 6 K 25 Mar 2013 - 17:36 MaheshBalasubramaniam still of 3D hexahedral, linear (reduced integration) element (damask id: 8)
still_009.gifgif still_009.gif manage 14 K 25 Mar 2013 - 17:37 MaheshBalasubramaniam still of 3D hexadral, linear (reduced integration) element (damask id: 9)
still_010.gifgif still_010.gif manage 20 K 25 Mar 2013 - 17:38 MaheshBalasubramaniam still of 3D hexadral, quadratic element (damask id: 10)
Topic revision: r35 - 04 Dec 2015, PhilipEisenlohr


  • News
14 Sep 2020
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