dequations panel

Location: Analysis page – Optimization panel

Use the Dequations panel to create user-defined functions for responses and design properties.

Guidelines for Entering Equations

•	Each dequation definition may consist of one or more equations, which are separated by semicolons ( ; ). A semicolon must not follow the last equation.

•	The first equation must take the following form:

•	Subsequent equations may reference the resultant variables of the previous equations in the following manner:

dequation-2

•	Constants may be specified as integers or in a floating-point format. A floating-point number can be in a format of either normal decimal-point format (3.90) or scientific notation (2.0E-3.0).

•	Only alphanumeric characters may be used in variable names. ( You may not use underscores, monetary symbols, punctuation symbols, or mathematical operators in variable names.)

See DEQATN in the OptiStruct online help for more information on defining dequations.

There are no subpanels on the Dequations panel. All inputs and command buttons are located on the main panel.

Input	Action
dequation	Name for the dequation definition (max. 8 characters)
edit equation	Enter the function or functions. The functions must follow the guidelines listed above.

The following action buttons appear:

Button	Action
create	Create the dequation.
update	Update the dequation.
review	Review the dequation.
clear	Clear the selection.
prev	Move the previous page of equations.
next	Move to the next page of equations.
return	Exit the panel.