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本帖最后由 wangyuewu 于 2012-5-30 09:21 编辑
做一个freeshap的优化,check的时候可以过去,计算的过程中迭代几步就报错了,请给位朋友帮看看,非常感谢啊!!!
out文件如下:
************************************************************************
** **
** **
** OptiStruct 11.0 **
** **
** Design and Optimization Software **
** from Altair Engineering, Inc. **
** **
** **
** Windows XP x64 Professional SP1 (Build 3790) ZYYJ-YF-YH-WYW **
** 4 CPU: Intel(R) Xeon(R) CPU W3520 @ 2.67GHz **
** CPU speed 2650 MHz **
** 4095 MB RAM, 4095 MB swap **
** **
** Build tag: 0569254_5333110_Ci32RH11M:61051-000 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: C:\Program Files (x86)\Altair\11.0/hwsolvers/hwsolver.cfg.
1 PARAM(s) were set:
CHECKEL ,NO
*** WARNING # 1265
PSHELL 2 has thickness 0.001 or less and bending properties
defined. This can lead to matrix singularities, causing message 153.
If this element is intended to be only a membrane element, please leave
MID2 and MID3 blank on the PSHELL data.
Detected while reading line 480237 from file
D:/WORK2012/A3/freeshape/00001.fem:
"PSHELL 2 10.001 1 1 0.0"
*** WARNING 1932: PMASS 3 is not referenced.
*** INFORMATION # 742
The dependent rotational d.o.f. of this rigid element is removed.
RBE2 element id = 1774515
independent grid id = 306780
a dependent grid id = 222007
This is because there is no need to constrain the rotational d.o.f. of
any of the dependent grids.
*** INFORMATION # 743
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 1
NOTE # 1847
AUTOMATIC SCREENING is activated.
Use "DSCREEN,AUTO,OFF" to turn off this effect.
************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file : D:/WORK2012/A3/freeshape/00001.fem
Output files prefix : D:/WORK2012/A3/freeshape/00001
Model read from files:
D:/WORK2012/A3/freeshape/00001.fem
************************************************************************
************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 89677
Total # of Elements : 350842
Total # of Rigid Elements : 1
Total # of Rigid Element Constraints : 3315
Total # of Degrees of Freedom : 278205
Total # of Non-zero Stiffness Terms : 5492586
Element Type Information
------------------------
CTETRA Elements : 344714
CONM2 Elements : 1
CTRIA3 Elements : 6127
Load and Boundary Information
-----------------------------
FORCE Sets : 4
SPC Sets : 1
Material and Property Information
---------------------------------
PSOLID Cards : 1
PMASS Cards : 1
PSHELL Cards : 1
MAT1 Cards : 1
************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
Objective Function : Minimize Weighted Compliance
------------------
Response Summary :
------------------
Number of compliance responses : 4
Number of equation responses : 1
------------------------
Static Subcase Summary :
------------------------
---------- -------- -------- --------------
Subcase ID SPC ID LOAD ID Weight = w(i)
---------- -------- -------- --------------
1 5 1 1.000
2 5 2 1.000
3 5 3 1.000
4 5 4 1.000
---------- -------- -------- --------------
---------------------------
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) : 0.2000
Run Type : Free-Shape Optimization
Restart from previous solution : No
Scratch file directory : ./
Free space: 31767 MB
Number of CPU processors : 1
************************************************************************
************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 261 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 261 MB
Recommended Memory (RAM) for Out of Core Solution : 261 MB
Recommended Memory (RAM) for In-Core Solution : 1259 MB
Recommended Number of Nodes for OS SPMD Parallel Run : 1
(Note: The Minimum Memory Requirement is limited by Output Module.)
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 1565 MB
Estimated Scratch Disk Space for In-Core Solution : 225 MB
Estimated Scratch Disk Space for Out of Core Solution : 1534 MB
************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************
OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
Auto-SPC d. o. f.s for loadcase 1
Number of Auto-SPC d. o. f.s = 3315
------------------------------
Grid No. Component
------------------------------
222007 4 5 6
222008 4 5 6
222009 4 5 6
222010 4 5 6
222011 4 5 6
222012 4 5 6
222013 4 5 6
222014 4 5 6
222015 4 5 6
222016 4 5 6
222017 4 5 6
222018 4 5 6
222019 4 5 6
222020 4 5 6
222021 4 5 6
222022 4 5 6
222023 4 5 6
222024 4 5 6
222025 4 5 6
222026 4 5 6
222027 4 5 6
222028 4 5 6
222029 4 5 6
222030 4 5 6
222031 4 5 6
222032 4 5 6
222033 4 5 6
222034 4 5 6
222035 4 5 6
222036 4 5 6
222037 4 5 6
222038 4 5 6
222039 4 5 6
222040 4 5 6
------------------------------
By default, Auto-SPC printing is limited to 100 dofs.
(Scratch disk space usage for starting iteration = 1134 MB)
(Running out-of-core solution)
Objective Function (Minimize WCOMP) = 2.92171E-02
Maximum Constraint Violation % = 0.00000E+00
Volume = 2.41482E-02 Mass = 1.73868E+02
Subcase Weight Compliance Weight*Comp.
1 1.000E+00 2.646300E-02 2.646300E-02
2 1.000E+00 1.265212E-03 1.265212E-03
3 1.000E+00 1.809356E-07 1.809356E-07
4 1.000E+00 1.488681E-03 1.488681E-03
------------
Sum of Weight*Compliance 2.921708E-02
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 WCOMP wcomp -- -- -- 2.922E-02 MIN
------------------------------------------------------------------------------------
ITERATION 1
Objective Function (Minimize WCOMP) = 2.88334E-02 % change = -1.31
Maximum Constraint Violation % = 0.00000E+00
Volume = 2.41740E-02 Mass = 1.74054E+02
Subcase Weight Compliance Weight*Comp.
1 1.000E+00 2.612493E-02 2.612493E-02
2 1.000E+00 1.245180E-03 1.245180E-03
3 1.000E+00 1.795414E-07 1.795414E-07
4 1.000E+00 1.463066E-03 1.463066E-03
------------
Sum of Weight*Compliance 2.883336E-02
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 WCOMP wcomp -- -- -- 2.883E-02 MIN
------------------------------------------------------------------------------------
ITERATION 2
Objective Function (Minimize WCOMP) = 2.85516E-02 % change = -0.98
Maximum Constraint Violation % = 0.00000E+00
Volume = 2.41926E-02 Mass = 1.74188E+02
Subcase Weight Compliance Weight*Comp.
1 1.000E+00 2.587615E-02 2.587615E-02
2 1.000E+00 1.231201E-03 1.231201E-03
3 1.000E+00 1.790000E-07 1.790000E-07
4 1.000E+00 1.444060E-03 1.444060E-03
------------
Sum of Weight*Compliance 2.855159E-02
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 WCOMP wcomp -- -- -- 2.855E-02 MIN
------------------------------------------------------------------------------------
ITERATION 3
*** ERROR # 15 ***
CTETRA element 1391820 is distorted (zero or negative Jacobian).
This error occurs in module "asmbdrv".
************************************************************************
RESOURCE USAGE INFORMATION
--------------------------
MAXIMUM MEMORY USED 261 MB
MAXIMUM DISK SPACE USED 2699 MB
************************************************************************
************************************************************************
COMPUTE TIME INFORMATION
------------------------
EXECUTION STARTED Fri May 25 10:15:42 2012
EXECUTION COMPLETED Fri May 25 10:20:43 2012
ELAPSED TIME 00:05:00
CPU TIME 00:04:17
************************************************************************
*** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx
************************************************************************
RADIOSS/OptiStruct error termination report printed to file
"00001.stat".
PROGRAM STOPPED DUE TO ERROR.
************************************************************************
A fatal error has occurred during computations:
*** ERROR # 15 ***
CTETRA element 1391820 is distorted (zero or negative Jacobian).
************************************************************************
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