Example: Minimizing Compliance

The task for this example is to minimize compliance (maximize stiffness) of a structure with respect to the 2nd load case in the finite element input file.

This task shows you how to:

Define Compliance in Tosca Structure.gui

  1. Choose Command > DRESP.
  2. Click Apply Template and choose Sum of Strain Energy as shown in the figure below:

  3. To choose a load case, click Add LC. In the field load case number, enter 2.
  4. Choose Command > OBJ_FUNC.
  5. Click Add Dresp and choose the previously defined design response for compliance:

SIMULIA Tosca StructureParameter File

The resulting command in the parameter file look like follows: 


DRESP
 ID_NAME    = compliance
 TYPE       = STRAIN_ENERGY
 DEF_TYPE   = SYSTEM
 LC_SET     = STATIC,2,
 EL_GROUP   = ALL_ELEMENTS
 GROUP_OPER = SUM
END_

OBJ_FUNC
 ID_NAME    = MY_OBJ_FUNC
 DRESP      = compliance
 TARGET     = MIN
END_