**deformation_cosserat#
Description#
This boundary condition imposes the displacement and rotation of a node set as given by
(34)#\[\begin{split}\begin{aligned}
\vect u &= \ten \varepsilon \cdot \vect r\\
\vect w &= \ten K \cdot \vect r
\end{aligned}\end{split}\]
where \(\ten \varepsilon\) is the deformation tensor, \(\ten K\) is the curvature tensor, and \(\vect r\) the position vector of a given node. The origin of \(\vect r\) may be a fixed point or a node of the mesh. This boundary condition can be applied only with Cosserat models which have rotational DOFs in addition to translational ones.
Syntax#
**deformation_cosserat [ node ]
\(~\,~\,\) nset_name (vec | num_node)
\(~\,~\,\) compos_name value [ table ] … compos_name value
\(~\,\) [ table ]