Hi all,

What I am trying to do is to set VARIABLES and put these VARIABLES in the objective function to minimise. (The optimisation type is the sensitivity-based shape optimisation)

The objective function I would like to minimise as follows
Objective function A =|15000-Reaction Force (Z)from a Node Set (named RP_MFB_STAMP)|

Therefore I have set up VARIABLES as follows;

VARIABLE
ID_NAME = VARIABLE_1
DEF_TYPE = FIX
VALUE = 150000
END_

VARIABLE
ID_NAME = VARIABLE_MF_RF
DEF_TYPE = SYSTEM
TYPE = REACTION_FORCE_Z
ND_GROUP = RP_MFB_STAMP
CS_REF = CS_0
END_

DRESP
ID_NAME = DRESP_Variable_2
DEF_TYPE = OPER
VAR_OPER = SUB_ABS
VAR_A = VARIABLE_1
VAR_B = VARIABLE_MF_RF
END_

However, I keep getting an ERROR message – below.
__
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] Selected DESIGN RESPONSE referenced in objective function definition
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] is not a valid DESIGN RESPONSE for shape optimization.
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] Please ensure the usage of an allowed DESIGN RESPONSE.
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] 
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] DESIGN_RESPONSE:
(ERROR ) [16:01:09.359280|SMATsoToscaPrep] DRESP_VARIABLE_2
__

I cannot find which set up is wrong. Therefore I would appreciate if you help me with this problem.

Regards

Jeong

Tosca ​​​​​​​