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Shell Element

This command is used to construct a ShellMITC4 element object, which uses a bilinear isoparametric formulation in combination with a modified shear interpolation to improve thin-plate bending performance.

element ShellMITC4 $eleTag $iNode $jNode $kNode $lNode $secTag

$eleTag

unique element object tag

$iNode $jNode $kNode $lNode

four nodes defining element boundaries, input in counter-clockwise order around the element.

$secTag

tag associated with previously-defined SectionForceDeformation object.

Typically, corresponds to some PlateFiberSection, elastic or otherwise

Should the element be required to compute a mass matrix, a consistent translational element mass matrix is computed. Rotational-inertia terms are ignored.

The valid queries to a shell element when creating an ElementRecorder object are 'force,' 'stiffness,' and 'material matArg1 matArg2 ...'

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