*ELEMENT RECOVERY MATRIX

Generate modal recovery matrices for a substructure.

This option is used to generate modal stress and strain recovery matrices for a substructure. These matrices can be used to recover components of the stress and strain tensors within the substructure from a solution given at all substructure degrees of freedom (generalized displacements) including the retained nodal degrees of freedom and the generalized coordinates corresponding to the substructure dynamic modes.

This option can be used only with a substructure generation analysis in Abaqus/Standard (SUBSTRUCTURE GENERATE option).

Related Topics
*SUBSTRUCTURE GENERATE
In Other Guides
Generating substructures

ProductsAbaqus/Standard

TypeHistory data

LevelStep

Required parameters

POSITION
Set POSITION=AVERAGED AT NODES if the values being recovered are the averages of values extrapolated to the nodes of the elements in the set. Since variables may be discontinuous between elements with different properties, averaging occurs only over those elements contributing to a node that have the same type with the following priority (in descending order): solid, shell, beam, other element types. Therefore, if solid and shell elements contribute to a node, results averaged over solid elements overwrite the other results at the node.

Set POSITION=CENTROIDAL if values are being recovered at the centroid of the elements (the centroid of the reference surface of a shell element, the midpoint between the end nodes of a beam element).

Optional parameters

ELSET
Set this parameter equal to the name of the element set for which the element results recovery should be enabled. If this parameter is omitted, the modal recovery matrices are generated for all elements in the model.

Data lines to define section point and tensor variables

First line (optional)

  1. Give a section point in the beam, shell, or layered solid at which tensor components should be recovered. Generation of the recovery matrices is supported for a single section point. If this data line is omitted, the recovery matrices are generated for a default section point number 1.

Second line

  1. Give the identifying keys for the tensor variables. Tensors S and E are supported.