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, *eleNodes, secTag)
eleTag (int) unique element object tag
eleNodes (list (int)) a list of four element nodes in counter-clockwise order
secTag (int) tag associated with previously-defined SectionForceDeformation object. Currently must be either a 'PlateFiberSection', or 'ElasticMembranePlateSection'


  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.
  2. It is a 3D element with 6 dofs and CAN NOT be used in 2D domain.

See also