Hello
Can you provide an example how to use design optimization solver with buckling constraint?
When I try to use it solver gives an error T2080
Here is my header of Nastran input . I cannot share mesh of the model.
Same problem with RTYPE=EIGEN, FREQ,LAMA
…
…
SUBCASE 11
SUBTITLE = on-ground-partial - torsion
SPC = 3
LOAD = 3
dessub = 2
SUBCASE 12
SUBTITLE = on-ground-partial - holding
SPC = 3
LOAD = 4
dessub = 2
…
…
BEGIN BULK
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
TOPVAR 1 DESOPT PSHELL 0.3 2
SYM XY
TDMIN 8.
$ Design Objective
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DRESP1 1 COMP
$
$ Design Constraints
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONADD 2 101 102 104 105 106
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 101 101 0.5 YES
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 101 FRMASS 1
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 102 102 12.
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 102 GLBDISP 1 2
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 103 103 200.
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 103 GLBSTRS
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 104 104 2.5 50.
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 104 LAMA 1
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 105 105 35. 90.
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 105 FREQ 1
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
DCONSTR 106 106 2.5 50.
$ DCID RID LALLOW UALLOW UADJUST
DRESP1 106 EIGN 1
$DRESP1 ID LABEL RTYPE REGION ATTA ATTB ATTC
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
