Defining Mesh Smooth Areas

Design variables for shape optimization are defined when assigning a node group to the design area.

This task shows you how to:

Before you begin:
  • The recommended procedure is to define MESH_SMOOTH area immediately after defining the design area (see DV_SHAPE command) since the two areas are assigned to one another.
  • The MESH_SMOOTH definition must be activated by reference in the OPTIMIZE command. Nonactivated definitions have no influence in the optimization. The reference in the OPTIMIZE command assigns the design area (see DV_SHAPE command) and the area for mesh smoothing (see MESH_SMOOTH command) to one another.
  • It is recommended to define MESH_SMOOTH before the DVCON_SHAPE entries or a volume constraint. This enables the system-defined MESH_SMOOTH node group to then be used for the DVCON_SHAPE definitions or the user/system-defined MESH_SMOOTH element group to be used for the definition of the volume constraint.
See Also
In Other Guides
DV_SHAPE
MESH_SMOOTH

Define a Mesh Smooth Area in Tosca Structure.gui

  1. Choose Command | MESH_SMOOTH in Tosca Structure.pre screen.
  2. In MESH_SMOOTH dialog, choose the element group for the mesh smooth area and define further settings.

Define a Mesh Smooth Area in SIMULIA Tosca Structure Parameter file

To define a mesh smooth area in the parameter file use the MESH_SMOOTH command.
Each MESH_SMOOTH definition has a name (ID_NAME parameter) and references a previously defined element group (EL_GROUP parameter). The name is required to subsequently activate the MESH_SMOOTH definition when specifying the optimization job (see OPTIMIZE command). The area for the mesh smoothing is specified by the element group. These two declarations are mandatory.

A typical MESH_SMOOTH command appears as follows: 


MESH_SMOOTH
 ID_NAME  = mesh_smooth_name
 EL_GROUP = elem_group_name
 ...
END_

All other declarations are optional and are used for additional specifications in the MESH_SMOOTH definition by the user.