*DESIGN VARIATION

Define gradients with respect to design parameters.

This option is an internal keyword generated by the Python preprocessor to define design gradients with respect to design parameters, excluding those related to shape (the DESIGN SHAPE VARIATION option is used to define design gradients with respect to shape design parameters). This keyword must come directly after the keyword containing the parameterized data with which the gradients are associated.

This page discusses:

Required parameters

PARAMETER

Set this parameter equal to the name of the design parameter with respect to which the gradients are defined.

Data lines to define the gradients with respect to the design parameter

First line

  1. Gradient of the first parameterized data item on the preceding option with respect to the design parameter.

  2. Gradient of the second parameterized data item on the preceding option with respect to the design parameter.

  3. Etc., up to eight gradients.

Subsequent lines (only needed if more than eight data items on the preceding option are parameterized)

  1. Gradient of the ninth dependent parameter with respect to the design parameter.

  2. Etc., up to eight gradients.

Repeat this set of data lines as often as necessary to define the gradients of the parameterized data items on the preceding option with respect to the design parameter.

 

See Also
Direct Design Sensitivity Analysis