ShellNL

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.

Examples

<pre> 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 </pre>

REFERENCES:

Zienkiewicz o.c., Taylor r.l. vol. 2. The finite element method. Solid mechanics. Elsevier 2000


Code Developed by: Leopoldo Tesser, Diego A. Talledo

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