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This command is used to construct a four-node quadrilateral element object, which uses a bilinear isoparametric formulation along with a mixed volume/pressure B-bar assumption. This element is for plane strain problems only.
element bbarQuad $eleTag $iNode $jNode $kNode $lNode $matTag
$eleTag |
unique element object tag |
$iNode $jNode $kNode $lNode |
four nodes defining element boundaries, input in counter-clockwise order around the element |
$matTag |
tag associated with previously-defined NDMaterial object |
Should the element be required to compute a mass matrix, a consistent translational element mass matrix is computed. Rotational-inertia terms are ignored.
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