The relative displacements corresponding to the forces below are chosen by requesting the corresponding “strains.” Elastic and plastic strains are available.
Two-dimensional elements
S11
Force per unit length in the first local direction.
S22
Force per unit length in the second local direction.
Three-dimensional elements
S11
Force per unit length in the first local direction.
S22
Force per unit length in the second local direction.
S33
Force per unit length in the third local direction.