Hi,

I have completed the analysis for SOL103. However, I am facing an issue with SOL200 in MSC Nastran/Patran, and I am unable to execute the optimization process.

I would greatly appreciate any assistance or guidance in resolving this problem.

Thank you in advance for your help.

Here is PFAST entry:
$ PFAST material:
PFAST 3 .005 -1 0 1.+12 1.+12 1.+12 1.+12
1.+12 1.+12 0.

and design optimization:
$ ...DESIGN VARIABLE DEFINITION

DESVAR 1 E 1. .85 1.15 .001

DESVAR 2 E 1. .85 1.15 .001

DESVAR 3 KT1 1. .1 10.0 .001

DESVAR 4 Dia 1. .1 1.9 .001

$ ...DEFINITION OF DESIGN VARIABLE TO ANALYSIS MODEL PARAMETER

DVMREL1 1 MAT1 1 E
1 7.17+10

DVMREL1 2 MAT1 2 E
2 6.89+10

DVPREL1 3 PFAST 3 KT1
3 1.+12

DVPREL1 4 PFAST 3 D
4 .005

Here, is the error from this coding:
*** USER WARNING MESSAGE 8775 (DOPR1I)
THE DESIGN OF PROPERTIES ON CONNECTOR ELEMENTS (PWELD AND/OR PFAST) IGNORES THE CHANGE IN THE PROJECTION OF THESE
ELEMENTS ONTO THE UNDERLYING STRUCTURE. CONSEQUENTLY, THE PROPERTIES ACHIEVED BY THE REDESIGN TASK MAY NOT SHOW
THE SAME BEHAVIOR WHEN A REANALYSIS IS PERFORMED WITH THE OPTIMIZED PROPERTY VALUES.
PFAST 3 KT1 1.000000E+12 1.000000E+12 N/A N/A NONE

1. THE DIFFERENCE FLAG IS USED TO CHARACTERIZE DIFFERENCES BETWEEN ANALYSIS AND DESIGN MODEL PROPERTIES:
IF THE FLAG IS NONE, THEN THERE IS NO SIGNIFICANT DIFFERENCE BETWEEN THE TWO VALUES.
IF THE FLAG IS WARNING, THEN THE USER IS ADVISED THAT DIFFERENCES EXIST AND THE DESIGN MODEL
IS BEING USED TO OVERRIDE THE ANALYSIS MODEL.
IF THE FLAG IS FATAL, THEN THE DIFFERENCES ARE GREATER THAN 1.00000E+35 AND THE RUN WILL BE TERMINATED.
2. THE SPAWNING FLAG (*) INDICATES THAT THE SPAWNED PROPERTY IS DERIVED EITHER FROM THE BEAM CROSS SECTION
LIBRARY OR FROM A PBEAM ENTRY. THE PROPERTY ID FOR THE SPAWNED PROPERTY IS IDENTICAL TO ITS PARENT.