Use the Free Shape panel to define design domains for free shape
        optimization.
Location: Analysis page > Optimization panel
Note: Only available in the OptiStruct solver interface.
Create Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | nodes / set | Select surface or edge nodes that are to form part
                    of the free shape design space. | 
                        
 
Update Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | nodes / set | Select surface or edge nodes that are to form part
                    of the free shape design space. | 
                        
 
Parameters Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | direction | Choose a direction
                                    constraint. You can choose to allow the structure to grow only,
                                    to shrink only or not to enforce any direction constraints
                                    (default). | 
                            
                                | smoothing
                                    method | Choose between
                                    optimized for speed or optimized for accuracy | 
                            
                                | options | Display further
                                    options. | 
                            
                                | nsmooth | Specify the desired
                                    number of smoothing layers. | 
                            
                                | mvfactor | Specify the initial
                                    maximum perturbation factor. | 
                        
 
Draw/Extr Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | draw type | Select none or
                                    single. | 
                        
 
Pattern Grouping Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | pattern type | Select none or 1-pln
                                    sym. | 
                        
 
Gridcon Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                            
                                | constraint
                                    type | Select fixed, vector
                                    or planar. | 
                        
 
Sidecon Subpanel
            
                
                            
                                | Option | Action | 
                        
                            
                            
                                | desvar | Specify a name for the design variable. | 
                        
 
Command Buttons
            
                
                            
                                | Button | Action | 
                        
                            
                            
                                | create | Create the design
                                    variable. | 
                            
                                | edit | Only appears when
                                    "set" is selected. Opens the Entity Sets panel to update the
                                    selected set. | 
                            
                                | reject | Revert the most recent
                                    changes. | 
                            
                                | review | Review the design
                                    variable in the modeling window. | 
                            
                                | update | Update the design
                                    variable with the most recent changes. | 
                            
                                | return | Exit the
                                    panel. |