INFEASIBLE DESIGN (AT LEAST ONE CONSTRAINT VIOLATED).
With stress upper bound as 10MPa, it works, but below 7 Mpa, it doesnt converge.
Answers
-
could you share the .out file?
As you're decresing the stress limit, it is probably harder to converge, as you're pushing it harder.
0 -
NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed.
You can suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).
1 PARAM(s) were set:
CHECKEL,NO
*** WARNING 1932: PSOLID ID 10 is not referenced.
*** WARNING # 7338
GRID 49765 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7338
GRID 49766 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7338
GRID 49785 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27902.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27902.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27909.
*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 18.
NOTE # 1852
AUTOMATIC SCREENING is activated.
Use DSCREEN,AUTO,OFF to disable automatic screening.************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------Total # of Grids (Structural) : 75742
Total # of Elements : 304214
Total # of Rigid Elements : 18
Total # of Rigid Element Constraints : 2304
Total # of Degrees of Freedom : 228837
(Structural)
Total # of Non-zero Stiffness Terms : 4423938
Element Type Information
------------------------CTETRA Elements : 304214
Load and Boundary Information
-----------------------------FORCE Sets : 1
SPC Sets : 1Material and Property Information
---------------------------------PSOLID Cards : 2
MAT1 Cards : 1************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------Objective Function : Minimize Mass
------------------
Response Summary :
------------------Number of mass responses : 1
Number of stress responses : 904------------------------
Static Subcase Summary :
---------------------------------- -------- ------- ---------------------
Subcase ID SPC ID LOAD ID Preloading Subcase ID
---------- -------- ------- ---------------------
10 10 11
---------- -------- ------- ------------------------------------------------
Design Parameters Summary :
---------------------------Total # of free-shape cards : 1
---------------------------------
Optimization Parameters Summary :
---------------------------------Maximum Number of Iterations : 30
Convergence Tolerance : 5.0000E-03
Step Size (Shape) : 0.2000Run Type : Free-Shape Optimization
Restart from previous solution : No
Run at location : Z:/sim_daten/z30/FEM/bijusa1/tesla_X/fem/closeout_freeshape/
Scratch file directory : Z:/sim_daten/z30/FEM/bijusa1/tesla_X/fem/closeout_freeshape/
Free space: 2568.884 GB
Number of CPU processors : 1
************************************************************************************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------Solver Type is: Sparse-Matrix Solver
Direct Method
Memory (RAM) Allocated in Preprocessor : 845 MB
Estimated Memory (RAM) for Out of Core Solution : 795 MB
Estimated Memory (RAM) for In-Core Solution : 845 MB
(Note: The Minimum Memory Requirement is limited by Output Module.)
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------Estimated Disk Space for Output Data Files : 519 MB
Estimated Scratch Disk Space for In-Core Solution : 1226 MB
Estimated Scratch Disk Space for Out of Core Solution : 1753 MB************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
*** INFORMATION # 3454
MPC, RBE# (and other rigids) and JOINTG constraints for
subcase 10 will be enforced with lagrange multipliers.
List of Auto-SPC d.o.f.s for loadcase 10
Total number of Auto-SPC d.o.f.s = 2304
------------------------------
Grid No. Component
------------------------------
196 4 5 6
197 4 5 6
198 4 5 6
199 4 5 6
200 4 5 6
201 4 5 6
202 4 5 6
203 4 5 6
204 4 5 6
205 4 5 6
206 4 5 6
207 4 5 6
208 4 5 6
209 4 5 6
210 4 5 6
211 4 5 6
212 4 5 6
213 4 5 6
214 4 5 6
215 4 5 6
216 4 5 6
217 4 5 6
218 4 5 6
219 4 5 6
220 4 5 6
221 4 5 6
222 4 5 6
223 4 5 6
224 4 5 6
225 4 5 6
226 4 5 6
227 4 5 6
228 4 5 6
229 4 5 6
------------------------------
Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
(Scratch disk space usage for starting iteration = 1024 MB)
(Running in-core solution)Objective Function (Minimize MASS ) = 2.55901E-04
Maximum Constraint Violation % = 0.53291E+02
Volume = 2.13250E+05 Mass = 2.55901E-04Subcase Compliance Epsilon
10 5.206536E+00 2.217249E-10Note : Epsilon = Residual Strain Energy Ratio.
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
/Model MID/PID/ /Reg Constraint
+Frqncy Mode No. Bound
/Times
------------------------------------------------------------------------------------
10 MASS mass -- -- TOTL 2.559E-04 MIN
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
------------------------------------------------------------------------------------MOST VIOLATED CONSTRAINTS TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Constraint Viol.
User-ID Label /RANDPS Element/ Comp Value Bound %
/Model MID/PID/ /Reg
+Frqncy Mode No.
/Times
------------------------------------------------------------------------------------
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
------------------------------------------------------------------------------------
ITERATION 1Objective Function (Minimize MASS ) = 2.55901E-04 % change = 0.00
Maximum Constraint Violation % = 0.53291E+02
Volume = 2.13250E+05 Mass = 2.55901E-04Subcase Compliance Epsilon
10 5.206536E+00 2.217249E-10Note : Epsilon = Residual Strain Energy Ratio.
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
/Model MID/PID/ /Reg Constraint
+Frqncy Mode No. Bound
/Times
------------------------------------------------------------------------------------
10 MASS mass -- -- TOTL 2.559E-04 MIN
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
------------------------------------------------------------------------------------MOST VIOLATED CONSTRAINTS TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Constraint Viol.
User-ID Label /RANDPS Element/ Comp Value Bound %
/Model MID/PID/ /Reg
+Frqncy Mode No.
/Times
------------------------------------------------------------------------------------
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
------------------------------------------------------------------------------------
*** WARNING # 7351
The optimization process is terminated due to excessive mesh distortion.
Please check the .HM.elcheck.cmf file for a list of distorted elements.
If the final design is not satisfactory, it is recommended to remesh it
to improve the mesh quality, and perform a second stage optimization.************************************************************************
INFEASIBLE DESIGN (AT LEAST ONE CONSTRAINT VIOLATED).************************************************************************
RESOURCE USAGE INFORMATION
--------------------------MAXIMUM MEMORY USED 845 MB
IN ADDITION 33 MB MEMORY WAS ALLOCATED FOR TEMPORARY USE
MAXIMUM DISK SPACE USED 1212 MB************************************************************************
************************************************************************COMPUTE TIME INFORMATION
------------------------EXECUTION STARTED Tue Aug 30 11:26:27 2022
EXECUTION COMPLETED Tue Aug 30 11:27:49 2022
ELAPSED TIME 00:01:21
CPU TIME 00:00:49************************************************************************
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx0 -
Sam George said:
NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed.
You can suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).
1 PARAM(s) were set:
CHECKEL,NO
*** WARNING 1932: PSOLID ID 10 is not referenced.
*** WARNING # 7338
GRID 49765 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7338
GRID 49766 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7338
GRID 49785 in DSHAPE card 10 is an isolated grid.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27902.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27902.
*** WARNING # 7345
Free-Shape detects nonequivalent elements or cracks near GRID 27909.
*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 18.
NOTE # 1852
AUTOMATIC SCREENING is activated.
Use DSCREEN,AUTO,OFF to disable automatic screening.************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------Total # of Grids (Structural) : 75742
Total # of Elements : 304214
Total # of Rigid Elements : 18
Total # of Rigid Element Constraints : 2304
Total # of Degrees of Freedom : 228837
(Structural)
Total # of Non-zero Stiffness Terms : 4423938
Element Type Information
------------------------CTETRA Elements : 304214
Load and Boundary Information
-----------------------------FORCE Sets : 1
SPC Sets : 1Material and Property Information
---------------------------------PSOLID Cards : 2
MAT1 Cards : 1************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------Objective Function : Minimize Mass
------------------
Response Summary :
------------------Number of mass responses : 1
Number of stress responses : 904------------------------
Static Subcase Summary :
---------------------------------- -------- ------- ---------------------
Subcase ID SPC ID LOAD ID Preloading Subcase ID
---------- -------- ------- ---------------------
10 10 11
---------- -------- ------- ------------------------------------------------
Design Parameters Summary :
---------------------------Total # of free-shape cards : 1
---------------------------------
Optimization Parameters Summary :
---------------------------------Maximum Number of Iterations : 30
Convergence Tolerance : 5.0000E-03
Step Size (Shape) : 0.2000Run Type : Free-Shape Optimization
Restart from previous solution : No
Run at location : Z:/sim_daten/z30/FEM/bijusa1/tesla_X/fem/closeout_freeshape/
Scratch file directory : Z:/sim_daten/z30/FEM/bijusa1/tesla_X/fem/closeout_freeshape/
Free space: 2568.884 GB
Number of CPU processors : 1
************************************************************************************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------Solver Type is: Sparse-Matrix Solver
Direct Method
Memory (RAM) Allocated in Preprocessor : 845 MB
Estimated Memory (RAM) for Out of Core Solution : 795 MB
Estimated Memory (RAM) for In-Core Solution : 845 MB
(Note: The Minimum Memory Requirement is limited by Output Module.)
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------Estimated Disk Space for Output Data Files : 519 MB
Estimated Scratch Disk Space for In-Core Solution : 1226 MB
Estimated Scratch Disk Space for Out of Core Solution : 1753 MB************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
*** INFORMATION # 3454
MPC, RBE# (and other rigids) and JOINTG constraints for
subcase 10 will be enforced with lagrange multipliers.
List of Auto-SPC d.o.f.s for loadcase 10
Total number of Auto-SPC d.o.f.s = 2304
------------------------------
Grid No. Component
------------------------------
196 4 5 6
197 4 5 6
198 4 5 6
199 4 5 6
200 4 5 6
201 4 5 6
202 4 5 6
203 4 5 6
204 4 5 6
205 4 5 6
206 4 5 6
207 4 5 6
208 4 5 6
209 4 5 6
210 4 5 6
211 4 5 6
212 4 5 6
213 4 5 6
214 4 5 6
215 4 5 6
216 4 5 6
217 4 5 6
218 4 5 6
219 4 5 6
220 4 5 6
221 4 5 6
222 4 5 6
223 4 5 6
224 4 5 6
225 4 5 6
226 4 5 6
227 4 5 6
228 4 5 6
229 4 5 6
------------------------------
Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
(Scratch disk space usage for starting iteration = 1024 MB)
(Running in-core solution)Objective Function (Minimize MASS ) = 2.55901E-04
Maximum Constraint Violation % = 0.53291E+02
Volume = 2.13250E+05 Mass = 2.55901E-04Subcase Compliance Epsilon
10 5.206536E+00 2.217249E-10Note : Epsilon = Residual Strain Energy Ratio.
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
/Model MID/PID/ /Reg Constraint
+Frqncy Mode No. Bound
/Times
------------------------------------------------------------------------------------
10 MASS mass -- -- TOTL 2.559E-04 MIN
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
------------------------------------------------------------------------------------MOST VIOLATED CONSTRAINTS TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Constraint Viol.
User-ID Label /RANDPS Element/ Comp Value Bound %
/Model MID/PID/ /Reg
+Frqncy Mode No.
/Times
------------------------------------------------------------------------------------
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
------------------------------------------------------------------------------------
ITERATION 1Objective Function (Minimize MASS ) = 2.55901E-04 % change = 0.00
Maximum Constraint Violation % = 0.53291E+02
Volume = 2.13250E+05 Mass = 2.55901E-04Subcase Compliance Epsilon
10 5.206536E+00 2.217249E-10Note : Epsilon = Residual Strain Energy Ratio.
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
/Model MID/PID/ /Reg Constraint
+Frqncy Mode No. Bound
/Times
------------------------------------------------------------------------------------
10 MASS mass -- -- TOTL 2.559E-04 MIN
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
------------------------------------------------------------------------------------MOST VIOLATED CONSTRAINTS TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Constraint Viol.
User-ID Label /RANDPS Element/ Comp Value Bound %
/Model MID/PID/ /Reg
+Frqncy Mode No.
/Times
------------------------------------------------------------------------------------
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 35926 SVM 9.197E+00 < 6.000E+00 53.3 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16083 SVM 8.826E+00 < 6.000E+00 47.1 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 16586 SVM 8.793E+00 < 6.000E+00 46.6 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34675 SVM 8.641E+00 < 6.000E+00 44.0 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
11 STRES stress 10 34715 SVM 8.598E+00 < 6.000E+00 43.3 V
------------------------------------------------------------------------------------
*** WARNING # 7351
The optimization process is terminated due to excessive mesh distortion.
Please check the .HM.elcheck.cmf file for a list of distorted elements.
If the final design is not satisfactory, it is recommended to remesh it
to improve the mesh quality, and perform a second stage optimization.************************************************************************
INFEASIBLE DESIGN (AT LEAST ONE CONSTRAINT VIOLATED).************************************************************************
RESOURCE USAGE INFORMATION
--------------------------MAXIMUM MEMORY USED 845 MB
IN ADDITION 33 MB MEMORY WAS ALLOCATED FOR TEMPORARY USE
MAXIMUM DISK SPACE USED 1212 MB************************************************************************
************************************************************************COMPUTE TIME INFORMATION
------------------------EXECUTION STARTED Tue Aug 30 11:26:27 2022
EXECUTION COMPLETED Tue Aug 30 11:27:49 2022
ELAPSED TIME 00:01:21
CPU TIME 00:00:49************************************************************************
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspxWould refining the mesh in concerned regions make a difference?
0
Altair Employee