3.1.10.38. Enhanced Strain Quadrilateral Element

This command constructs a four-node quadrilateral element using a bilinear isoparametric formulation with enhanced strain modes. The command name in OpenSees is enhancedQuad. Use with -ndm 2 -ndf 2.

element enhancedQuad $eleTag $iNode $jNode $kNode $lNode $thick $type $matTag

Argument	Type	Description
$eleTag	integer	unique element tag
$iNode $jNode $kNode $lNode	integer	four nodes in counter-clockwise order
$thick	float	element thickness
$type	string	material formulation: PlaneStrain or PlaneStress
$matTag	integer	tag of an nD material

Note

1. Valid Element Recorder queries include forces, stresses, and material $matNum ....

Example

1. Tcl Code

element enhancedQuad 1 1 2 3 4 1.0 PlaneStrain 1

2. Python Code

element('enhancedQuad', 1, 1, 2, 3, 4, 1.0, 'PlaneStrain', 1)

Code developed by: Ed Love