Bead Height

The height of the bead stiffeners is formulated as a constraint of the controller-based optimization problem. The bead height is initially zero for all nodes and the optimizer moves the nodes in the shell normal direction until they reach the bead height.

Analysis-Independent Design Response

For the bead height the following table shows the allowed combinations between the strategy and the items OBJ_FUNC and CONSTRAINT with C for controller and S for sensitivity-based optimization.

TOPO

SHAPE

BEAD

SIZING

OBJ_FUNC

CONSTRAINT

C

The height of the bead stiffeners is formulated as a constraint of the controller-based optimization problem. The bead height is initially zero for all nodes and the optimizer moves the nodes in the shell normal direction until they reach the bead height.

The bead height is defined by the DRESP command which is then referenced in the CONSTRAINT command. A typical bead height constraint could be defined as follows:


DRESP
 ID_NAME    = dresp_bead_height
 DEF_TYPE   = SYSTEM
 ND_GROUP   = design_nodes
 TYPE       = BEAD_HEIGHT
 GROUP_OPER = MAX
END_
  
CONSTRAINT
 ID_NAME   = bead_height
 DRESP     = dresp_bead_height
 MAGNITUDE = ABS
 EQ_VALUE  = 10.
END_