*** ERROR # 4002 *** in OPTISTRUCT
Altair EmployeeI am doing with a nonlinear implicit problem in optistruct.
I have created contact surface and load steps (followed 'os-1500' for nonlinear implicit problem set up, apart from that created contact surface)
But while running its showing some errors
*** ERROR # 4002 ***
Running RADIOSS engine, 1 ERROR and 0 WARNINGs have been detected.
They are listed below.
ENGINE ERROR:
** ERROR : RADIOSS IMPLICIT STOPPED DUE TO MODELLING DATA **
ISTOP=-1
NLGEOM subcase 3, engine finished
(Running in-core solution)
Volume = 6.87129E+006 Mass = 1.05875E+001
************************************************************************
ANALYSIS COMPLETED.
(1) How can I fix the issue?
(2) Is there any possibilities to edit the engine file in optistruct?
Answers
-
Hi,
please share the entire .out file
0 -
Altair Forum User said:
Hi,
please share the entire .out file
************************************************************************FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------Total # of Grids (Structural) : 8053
Total # of Elements : 5128
Total # of Rigid Elements : 10
Total # of Rigid Element Constraints : 876
Total # of Degrees of Freedom : 25002
Total # of Non-zero Stiffness Terms : 771777
Element Type Information
------------------------CHEXA Elements : 4750
CPENTA Elements : 378Load and Boundary Information
-----------------------------FORCE Sets : 1
SPC Sets : 1
NLOAD Sets : 1Material and Property Information
---------------------------------PSOLID Cards : 3
PSOLIDX Cards : 3
MAT1 Cards : 2
MATX02 Cards : 1
MATX36 Cards : 1************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND : ANALYSIS ONLY
------------------------
NLGEOM Subcase Summary :
---------------------------------- --------- ------ -------- ------- -------- ---------- --------
Subcase ID NLPARM ID SPC ID NLOAD ID LOAD ID XHIST ID SOLVTYP ID RWALL ID
1 4 1 6
---------- --------- ------ -------- ------- -------- ---------- --------Run Type : Analysis Only
Scratch file directory : ./
Free space: 338.802 GB
Number of CPU processors : 1
************************************************************************************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------Solver Type is: Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 400 MB
In addition a ramdisk area was allocated in memory : 200 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 17 MB
Recommended Memory (RAM) for Out of Core Solution : 19 MB
Recommended Memory (RAM) for In-Core Solution : 26 MB
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------Estimated Disk Space for Output Data Files : 4 MB
Estimated Scratch Disk Space for In-Core Solution : 9 MB
Estimated Scratch Disk Space for Out of Core Solution : 9 MB************************************************************************
BEGINNING ANALYSIS SOLUTION ....
************************************************************************ANALYSIS RESULTS :
------------------
ITERATION 0Element # 4002, element type HEXA.
WARNING - Outside of recommended range: Edge Angle = 71.653
upper limit = 60.000Element # 4003, element type HEXA.
WARNING - Outside of recommended range: Edge Angle = 71.653
upper limit = 60.000Element # 4568, element type HEXA.
WARNING - Outside of recommended range: Edge Angle = 73.493
upper limit = 60.000NOTE : other similar error/warning messages were suppressed,
use PARAM,CHECKEL,FULL to obtain full report
Element Quality Check Summary
-----------------------------
Total # of elements that exceeded recommended range (warning) = 8
Recommended range violations:
------------------------------------------------------------------------------
Element Property # of Recommended Range Max. Viol. Elem.
Viol. Lower Upper Value type No.
------- ------------------- -------- --------- --------- --------- --- -------
HEXA Edge Angle 8 -- 60.00 73.49 U 4568
(Scratch disk space usage for starting iteration = 9 MB)
NLGEOM subcase 1, starter running ...*** WARNING # 4101
Running RADIOSS starter, 0 ERRORs and 4 WARNINGs have been detected.
They are listed below.STARTER WARNING:
WARNING ID : 343
** WARNING : INITIAL PENETRATIONS IN INTERFACE
DESCRIPTION :
-- INTERFACE ID : 2
-- INTERFACE TYPE : INTER_TYPE7_2
THERE ARE 40 INITIAL PENETRATIONS
( CONCERNING 20 NODES )STARTER WARNING:
WARNING ID : 343
** WARNING : INITIAL PENETRATIONS IN INTERFACE
DESCRIPTION :
-- INTERFACE ID : 5
-- INTERFACE TYPE : INTER_TYPE7_5
THERE ARE 40 INITIAL PENETRATIONS
( CONCERNING 40 NODES )STARTER WARNING:
WARNING ID : 343
** WARNING : INITIAL PENETRATIONS IN INTERFACE
DESCRIPTION :
-- INTERFACE ID : 6
-- INTERFACE TYPE : INTER_TYPE7_6
THERE ARE 721 INITIAL PENETRATIONS
( CONCERNING 274 NODES )STARTER WARNING:
WARNING ID : 343
** WARNING : INITIAL PENETRATIONS IN INTERFACE
DESCRIPTION :
-- INTERFACE ID : 7
-- INTERFACE TYPE : INTER_TYPE7_7
THERE ARE 721 INITIAL PENETRATIONS
( CONCERNING 508 NODES )
NLGEOM subcase 1, starter finished
NLGEOM subcase 1, engine running ...*** ERROR # 4079 ***
Non-convergent nonlinear iterations for subcase 1.*** ERROR # 4002 ***
Running RADIOSS engine, 1 ERROR and 0 WARNINGs have been detected.
They are listed below.ENGINE ERROR:
** ERROR : RADIOSS IMPLICIT STOPPED DUE TO TIMESTEP LIMIT **
ISTOP=-2
NLGEOM subcase 1, engine finished
(Running in-core solution)Volume = 5.12207E+005 Mass = 3.38515E-003
************************************************************************ANALYSIS COMPLETED.
*** SOME ERRORS WERE REPORTED DURING THE RUN,
*** PLEASE VERIFY RESULTS AS THEY MAY BE INVALID.
************************************************************************
RESOURCE USAGE INFORMATION
--------------------------MAXIMUM MEMORY USED 400 MB
IN ADDITION 200 MB RAMDISK AREA WAS ALLOCATED IN MEMORY
MAXIMUM DISK SPACE USED 1 MB************************************************************************
************************************************************************COMPUTE TIME INFORMATION
------------------------EXECUTION STARTED Tue Jan 26 14:08:29 2016
EXECUTION COMPLETED Tue Jan 26 14:11:28 2016
ELAPSED TIME 00:02:58
CPU TIME 00:00:00************************************************************************
*** 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
PROGRAM STOPPED DUE TO ERROR.************************************************************************
A fatal error has occurred during computations:
*** ERROR # 4079 ***
Non-convergent nonlinear iterations for subcase 1.
ANALYSIS COMPLETED.
*** SOME ERRORS WERE REPORTED DURING THE RUN,
*** PLEASE VERIFY RESULTS AS THEY MAY BE INVALID.
*** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.
************************************************************************
0 -
I found the cause of the problem: because the model has contact, but I'm not using card PcontX, so the error always occurs.Workaround: open the card PcontX.And if your contact has the initial penetration, you need to change the INACTI parameter.0
-
Dear Jiaru,
Did you got solution for the above issue ?
I am facing the same problem,tried with PCONT card also same error is repeating....
please share your suggestions
Thanks
RAM
0 -
Altair Forum User said:
I am facing the same problem,tried with PCONT card also same error is repeating....
Try with PCNTX7 in OptiStruct which is same as Type7 contact in RADIOSS.
0 -
Altair Forum User said:
Try with PCNTX7 in OptiStruct which is same as Type7 contact in RADIOSS.
how to assign PCNTX7 in optistruct??
0 -
Ram,
When you are in PCONT card, scroll down to PCONTX and change type to PCONTX7
<?xml version="1.0" encoding="UTF-8"?>
0
