ShellNL: Difference between revisions

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<pre>
<pre>
set t 10.0
model basic -ndm 3 -ndf 6
model basic -ndm 3 -ndf 6
nDMaterial ElasticIsotropic 1 200000 0.3
nDMaterial ElasticIsotropic 1 200000 0.3

Revision as of 18:39, 16 November 2011




This command is used to construct a ShellNL element object, a lagrangian nine-noded shell element.


element ShellNL $eleTag $node1 $node2 ... $node9 $secTag




$eleTag unique element object tag
$node1 ... $node9 nine nodes defining element boundaries, input is the typical, firstly four corner nodes counter-clockwise, then mid-side nodes counter-clockwise and finally the central node.
$secTag tag associated with previously-defined SectionForceDeformation object.

Currently must be either a PlateFiberSection, or ElasticMembranePlateSection



NOTE:

  1. The valid queries to a Quad element when creating an ElementRecorder object are 'forces', 'stresses,' and 'material $matNum matArg1 matArg2 ...' Where $matNum refers to the material object at the integration point corresponding to the node numbers in the isoparametric domain.




EXAMPLE:

set t 10.0
model basic -ndm 3 -ndf 6
nDMaterial ElasticIsotropic 1 200000 0.3
nDMaterial PlateFiber 2 1
section PlateFiber 3 2 $t
element ShellNL      1      1     27     29      3     14     28     16      2     15   3 


REFERENCES:



Code Developed by: Leopoldo Tesser, Diego A. Talledo