Defining Static Perturbation Steps

You can define a static perturbation step to perform a static stress analysis of a stable problem as a linear perturbation about a base state.

See Also
About Static Perturbation Steps
In Other Guides
Analysis Cases and Steps
  1. From the section of the action bar, click Static Perturbation Step .
  2. Optional: Enter a descriptive Name.
  3. If your simulation includes only small-sliding, frictionless contact, select Allow small sliding, frictionless contact changes to improve performance. Otherwise, select Do not allow contact changes.

    Small-sliding, frictionless contact is intended for use with the small-sliding approximation or tied surfaces in surface-based contact. It is also used with the small-sliding formulation for contact initialization in general contact. For more information, see Defining Surface-Based Contact in Implicit Steps and Defining Contact Initialization.

  4. From the Matrix storage options, specify one of the following options for the matrix storage and solution scheme:
    OptionDescription
    Solver default Uses a matrix storage and solution scheme chosen by the Abaqus solvers to store the stiffness matrix.
    Symmetric Uses the symmetric matrix storage and solution scheme to store the stiffness matrix.
    Unsymmetric Uses the unsymmetric matrix storage and solution scheme to store the stiffness matrix.

    For more information about these options, see Matrix Storage and Solution Scheme in Abaqus/Standard.

  5. Click OK.