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optistruct & hyperstudy 理论基础出现optimization has converged
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************************************************************************
** **
** **
** OptiStruct 11.0 **
** **
** Design and Optimization Software **
** from Altair Engineering, Inc. **
** **
** **
** Windows 7 Workstation (Build 7600) ADMIN-PC **
** 2 CPU: Intel(R) Celeron(R) CPU G550 @ 2.60GHz **
** CPU speed 2600 MHz **
** 1327 MB RAM, 4095 MB swap **
** **
** Build tag: 0556688_5333110_Ci32RH11M:58501-000 4000 **
************************************************************************
** COPYRIGHT (C) 1996-2011 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************
*** OptiStruct defaults set from:
install config file: D:\Program Files\Altair\11.0.0.39/hwsolvers/hwsolver.cfg.
NOTE # 1929
Created RAM scratch area: total size 30 MB.
NOTE # 1847
AUTOMATIC SCREENING is activated.
Use "DSCREEN,AUTO,OFF" to turn off this effect.
************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file :
C:/Users/admin/Documents/ch.4/bracket_size_opt.fem
Output files prefix :
C:/Users/admin/Documents/ch.4/bracket_size_opt
Model read from files:
C:/Users/admin/Documents/ch.4/bracket_size_opt.fem
************************************************************************
************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 923
Total # of Elements : 804
Total # of Rigid Elements : 89
Total # of Rigid Element Constraints : 834
Total # of Degrees of Freedom : 5530
Total # of Non-zero Stiffness Terms : 139136
Element Type Information
------------------------
CQUAD4 Elements : 804
Load and Boundary Information
-----------------------------
FORCE Sets : 1
SPC Sets : 1
Material and Property Information
---------------------------------
PSHELL Cards : 2
MAT1 Cards : 1
************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
Objective Function : Minimize Volume
------------------
Response Summary :
------------------
Number of volume responses : 1
Number of stress responses : 1608
------------------------
Static Subcase Summary :
------------------------
---------- -------- --------
Subcase ID SPC ID FORCE ID
---------- -------- --------
1 2 1
---------- -------- --------
---------------------------
Design Parameters Summary :
---------------------------
Total # of user-defined sizing design variables : 2
Total # of user-defined design variables : 2
---------------------------------
Optimization Parameters Summary :
---------------------------------
Maximum Number of Iterations : 30
Convergence Tolerance : 5.0000E-03
Step Size (Sizing) : 0.5000
Run Type : Sizing Optimization
-----------------------------
Sizing Optimization Summary :
-----------------------------
-------- -------- ----------- ----------- -------------
DESVAR Label Lower Design Upper
ID Bound Variable Bound
-------- -------- ----------- ----------- -------------
1 part1 1.000E+00 2.500E+00 2.500E+00
2 part2 -- 2.500E+00 -- *
-------- -------- ----------- ----------- -------------
* indicates that the design variable is directly linked
to the previous design variable
Restart from previous solution : No
Scratch file directory : ./
Free space: 32487 MB
Number of CPU processors : 1
************************************************************************
************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 41 MB
This includes ramdisk area allocated in memory : 30 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 7 MB
Recommended Memory (RAM) for Out of Core Solution : 8 MB
Recommended Memory (RAM) for In-Core Solution : 11 MB
Recommended Number of Nodes for OS SPMD Parallel Run : 1
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 4 MB
Estimated Scratch Disk Space for In-Core Solution : 18 MB
Estimated Scratch Disk Space for Out of Core Solution : 26 MB
************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************
OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
(Scratch disk space usage for starting iteration = 15 MB)
(Running in-core solution)
Objective Function (Minimize VOLUM) = 4.93714E+04
Maximum Constraint Violation % = 0.00000E+00
Volume = 4.93714E+04 Mass = 0.00000E+00
Subcase Compliance
1 2.463659E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 4.937E+04 MIN
2 STRES stress1 1 421 SVM1 5.587E+01 < 1.000E+02 0.0
2 STRES stress1 1 465 SVM1 5.295E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 5.651E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 5.679E+01 < 1.000E+02 0.0
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 2.500E+00 2.500E+00
2 part2 -- 2.500E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
note: all design variables are at their bounds
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE ANAL-VALUE
--------------------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 2.500E+00 2.500E+00
DVPREL1 2 PSHELL 3 T 2.500E+00 2.500E+00
--------------------------------------------------------------------------
ITERATION 1
Objective Function (Minimize VOLUM) = 3.67715E+04 % change = -25.52
Maximum Constraint Violation % = 0.39454E-01
Volume = 3.67715E+04 Mass = 0.00000E+00
Subcase Compliance
1 4.909980E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 3.677E+04 MIN
2 STRES stress1 1 421 SVM1 9.018E+01 < 1.000E+02 0.0
2 STRES stress1 1 465 SVM1 8.306E+01 < 1.000E+02 0.0
2 STRES stress1 1 1045 SVM2 8.751E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 9.028E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 1.000E+02 < 1.000E+02 0.0 A
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 1.862E+00 2.500E+00
2 part2 -- 1.862E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE
--------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 1.862E+00
DVPREL1 2 PSHELL 3 T 1.862E+00
--------------------------------------------------------------
ITERATION 2
Soft convergence criterion satisfied;
the design did not change during the last iteration.
Objective Function (Minimize VOLUM) = 3.67715E+04 % change = 0.00
Maximum Constraint Violation % = 0.39454E-01
Volume = 3.67715E+04 Mass = 0.00000E+00
Subcase Compliance
1 4.909980E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 3.677E+04 MIN
2 STRES stress1 1 421 SVM1 9.018E+01 < 1.000E+02 0.0
2 STRES stress1 1 1045 SVM2 8.751E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 9.028E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 1.000E+02 < 1.000E+02 0.0 A
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 1.862E+00 2.500E+00
2 part2 -- 1.862E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE
--------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 1.862E+00
DVPREL1 2 PSHELL 3 T 1.862E+00
--------------------------------------------------------------
************************************************************************
OPTIMIZATION HAS CONVERGED.
FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED).
************************************************************************
RESOURCE USAGE INFORMATION
--------------------------
MAXIMUM MEMORY USED 41 MB
THIS INCLUDES 30 MB RAMDISK AREA ALLOCATED IN MEMORY
MAXIMUM DISK SPACE USED 19 MB
************************************************************************
************************************************************************
COMPUTE TIME INFORMATION
------------------------
EXECUTION STARTED Fri May 16 09:55:25 2014
EXECUTION COMPLETED Fri May 16 09:55:28 2014
ELAPSED TIME 00:00:02
CPU TIME 00:00:00
************************************************************************
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx
哪位大神能帮看下
** **
** **
** OptiStruct 11.0 **
** **
** Design and Optimization Software **
** from Altair Engineering, Inc. **
** **
** **
** Windows 7 Workstation (Build 7600) ADMIN-PC **
** 2 CPU: Intel(R) Celeron(R) CPU G550 @ 2.60GHz **
** CPU speed 2600 MHz **
** 1327 MB RAM, 4095 MB swap **
** **
** Build tag: 0556688_5333110_Ci32RH11M:58501-000 4000 **
************************************************************************
** COPYRIGHT (C) 1996-2011 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************
*** OptiStruct defaults set from:
install config file: D:\Program Files\Altair\11.0.0.39/hwsolvers/hwsolver.cfg.
NOTE # 1929
Created RAM scratch area: total size 30 MB.
NOTE # 1847
AUTOMATIC SCREENING is activated.
Use "DSCREEN,AUTO,OFF" to turn off this effect.
************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file :
C:/Users/admin/Documents/ch.4/bracket_size_opt.fem
Output files prefix :
C:/Users/admin/Documents/ch.4/bracket_size_opt
Model read from files:
C:/Users/admin/Documents/ch.4/bracket_size_opt.fem
************************************************************************
************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 923
Total # of Elements : 804
Total # of Rigid Elements : 89
Total # of Rigid Element Constraints : 834
Total # of Degrees of Freedom : 5530
Total # of Non-zero Stiffness Terms : 139136
Element Type Information
------------------------
CQUAD4 Elements : 804
Load and Boundary Information
-----------------------------
FORCE Sets : 1
SPC Sets : 1
Material and Property Information
---------------------------------
PSHELL Cards : 2
MAT1 Cards : 1
************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
Objective Function : Minimize Volume
------------------
Response Summary :
------------------
Number of volume responses : 1
Number of stress responses : 1608
------------------------
Static Subcase Summary :
------------------------
---------- -------- --------
Subcase ID SPC ID FORCE ID
---------- -------- --------
1 2 1
---------- -------- --------
---------------------------
Design Parameters Summary :
---------------------------
Total # of user-defined sizing design variables : 2
Total # of user-defined design variables : 2
---------------------------------
Optimization Parameters Summary :
---------------------------------
Maximum Number of Iterations : 30
Convergence Tolerance : 5.0000E-03
Step Size (Sizing) : 0.5000
Run Type : Sizing Optimization
-----------------------------
Sizing Optimization Summary :
-----------------------------
-------- -------- ----------- ----------- -------------
DESVAR Label Lower Design Upper
ID Bound Variable Bound
-------- -------- ----------- ----------- -------------
1 part1 1.000E+00 2.500E+00 2.500E+00
2 part2 -- 2.500E+00 -- *
-------- -------- ----------- ----------- -------------
* indicates that the design variable is directly linked
to the previous design variable
Restart from previous solution : No
Scratch file directory : ./
Free space: 32487 MB
Number of CPU processors : 1
************************************************************************
************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 41 MB
This includes ramdisk area allocated in memory : 30 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 7 MB
Recommended Memory (RAM) for Out of Core Solution : 8 MB
Recommended Memory (RAM) for In-Core Solution : 11 MB
Recommended Number of Nodes for OS SPMD Parallel Run : 1
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 4 MB
Estimated Scratch Disk Space for In-Core Solution : 18 MB
Estimated Scratch Disk Space for Out of Core Solution : 26 MB
************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************
OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
(Scratch disk space usage for starting iteration = 15 MB)
(Running in-core solution)
Objective Function (Minimize VOLUM) = 4.93714E+04
Maximum Constraint Violation % = 0.00000E+00
Volume = 4.93714E+04 Mass = 0.00000E+00
Subcase Compliance
1 2.463659E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 4.937E+04 MIN
2 STRES stress1 1 421 SVM1 5.587E+01 < 1.000E+02 0.0
2 STRES stress1 1 465 SVM1 5.295E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 5.651E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 5.679E+01 < 1.000E+02 0.0
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 2.500E+00 2.500E+00
2 part2 -- 2.500E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
note: all design variables are at their bounds
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE ANAL-VALUE
--------------------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 2.500E+00 2.500E+00
DVPREL1 2 PSHELL 3 T 2.500E+00 2.500E+00
--------------------------------------------------------------------------
ITERATION 1
Objective Function (Minimize VOLUM) = 3.67715E+04 % change = -25.52
Maximum Constraint Violation % = 0.39454E-01
Volume = 3.67715E+04 Mass = 0.00000E+00
Subcase Compliance
1 4.909980E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 3.677E+04 MIN
2 STRES stress1 1 421 SVM1 9.018E+01 < 1.000E+02 0.0
2 STRES stress1 1 465 SVM1 8.306E+01 < 1.000E+02 0.0
2 STRES stress1 1 1045 SVM2 8.751E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 9.028E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 1.000E+02 < 1.000E+02 0.0 A
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 1.862E+00 2.500E+00
2 part2 -- 1.862E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE
--------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 1.862E+00
DVPREL1 2 PSHELL 3 T 1.862E+00
--------------------------------------------------------------
ITERATION 2
Soft convergence criterion satisfied;
the design did not change during the last iteration.
Objective Function (Minimize VOLUM) = 3.67715E+04 % change = 0.00
Maximum Constraint Violation % = 0.39454E-01
Volume = 3.67715E+04 Mass = 0.00000E+00
Subcase Compliance
1 4.909980E+00
RETAINED RESPONSES TABLE
------------------------------------------------------------------------------------
Response Type Response Subcase Grid/ DOF/ Response Objective Viol.
User-ID Label /RANDPS Element/ Comp Value Reference/ %
+Frqncy MID/PID/ /Reg Constraint
Mode No. Bound
------------------------------------------------------------------------------------
1 VOLUM volume -- -- TOTL 3.677E+04 MIN
2 STRES stress1 1 421 SVM1 9.018E+01 < 1.000E+02 0.0
2 STRES stress1 1 1045 SVM2 8.751E+01 < 1.000E+02 0.0
3 STRES stress2 1 63 SVM1 9.028E+01 < 1.000E+02 0.0
3 STRES stress2 1 1122 SVM2 1.000E+02 < 1.000E+02 0.0 A
------------------------------------------------------------------------------------
--------------------------------------------------------
Design Design Lower Design Upper
Variable Variable Bound Variable Bound
ID Label
--------------------------------------------------------
1 part1 1.000E+00 1.862E+00 2.500E+00
2 part2 -- 1.862E+00 -- *
--------------------------------------------------------
* indicates that the design variable is directly linked
to the previous design variable
DESIGNED PROPERTY ITEMS TABLE
--------------------------------------------------------------
DVPREL1/2 USER-ID PROP-TYPE PROP-ID ITEM-CODE PROP-VALUE
--------------------------------------------------------------
DVPREL1 1 PSHELL 2 T 1.862E+00
DVPREL1 2 PSHELL 3 T 1.862E+00
--------------------------------------------------------------
************************************************************************
OPTIMIZATION HAS CONVERGED.
FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED).
************************************************************************
RESOURCE USAGE INFORMATION
--------------------------
MAXIMUM MEMORY USED 41 MB
THIS INCLUDES 30 MB RAMDISK AREA ALLOCATED IN MEMORY
MAXIMUM DISK SPACE USED 19 MB
************************************************************************
************************************************************************
COMPUTE TIME INFORMATION
------------------------
EXECUTION STARTED Fri May 16 09:55:25 2014
EXECUTION COMPLETED Fri May 16 09:55:28 2014
ELAPSED TIME 00:00:02
CPU TIME 00:00:00
************************************************************************
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx
哪位大神能帮看下
![[案例专题]基于ICEM和Fluent的二维喷管非结构网格算例实例](https://img.jishulink.com/cimage/a2935f5023ce0e9831b5db828f22c7f1.jpg?image_process=resize,fw_576,fh_320,)
变量的原始值是2.5，下限是1，上限你设置的也是2.5，是不是要把该上限调整的大一点，>2.5
因为在优化的过程中，并不是没一个变量值都变小的，即使你要求体积或是质量最小，也是有的增大有的减小……