An unknown error during Solution.

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AshishChauhan posted this 1 weeks ago

Hello, I'm getting an error and a warning during solution, while all other things are good.

Error: "An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes."

And,

Warning: "Not all Named Selections were successfully written because one or more names are not valid for the solver."

Association: Project>Model>Static Structural>Solution

I'm using Ansys 18.1 and doing an analysis on a layered composite helical spring model generated in Ansys ACP-Pre.

I have also attached a text file containing the Solution Information.

 

PLEASE HELP!

 

Attached Files

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SandeepMedikonda posted this 1 weeks ago

Ashish, Can you copy paste the output using preformatted option in the toolbar above where you type? Not everyone is allowed to download the file? Even the last part after the statistics are written out will do.

Regards,
Sandeep

AshishChauhan posted this 1 weeks ago

Hello Sir,

Actually, i saw one post on the forum where the similar error was posted and it mentioned to close some of the other running programs. After closing one of the programs and running the solution again I got rid of the above-mentioned error, but now it shows one more Unknown error.

Also, the Warning: "Not all Named Selections were successfully written because one or more names are not valid for the solver"  is still there.

 

I am pasting the solution information for the second error here.

 

Solver Output

 


 ANSYS Mechanical Enterprise                      


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          *****  ANSYS COMMAND LINE ARGUMENTS  *****
  BATCH MODE REQUESTED (-b)    = NOLIST
  INPUT FILE COPY MODE (-c)    = COPY
  DISTRIBUTED MEMORY PARALLEL REQUESTED
       4 PARALLEL PROCESSES REQUESTED WITH SINGLE THREAD PER PROCESS
    TOTAL OF     4 CORES REQUESTED
  MPI OPTION                   = INTELMPI
  INPUT FILE NAME              = C:\Users\MAYANK\Desktop\NAYA MODEL01 (Ansys 18.1)\_ProjectScratch\Scr9956\dummy.dat
  OUTPUT FILE NAME             = C:\Users\MAYANK\Desktop\NAYA MODEL01 (Ansys 18.1)\_ProjectScratch\Scr9956\solve.out
  START-UP FILE MODE           = NOREAD
  STOP FILE MODE               = NOREAD

 RELEASE= Release 18.1         BUILD= 18.1      UP20170403   VERSION=WINDOWS x64
 CURRENT JOBNAME=file0  00:161  DEC 08, 2018 CP=      0.344


 PARAMETER _DS_PROGRESS =     999.0000000   

 /INPUT FILE= ds.dat  LINE=       0



 *** NOTE ***                            CP =       0.562   TIME= 00:161
 The /CONFIG,NOELDB command is not valid in a Distributed ANSYS         
 solution.  Command is ignored.                                         

 *GET  _WALLSTRT  FROM  ACTI  ITEM=TIME WALL  VALUE= 0.275277778   

 TITLE=
 NEW--Static Structural (K3)                                                  

  ACT Extensions:
      MechanicalDropTest, 2.0
      f0fd899f-9d88-4f46-8cf1-36bf5c218d65, wbex
 

 SET PARAMETER DIMENSIONS ON  _WB_PROJECTSCRATCH_DIR
  TYPE=STRI  DIMENSIONS=      248        1        1

 PARAMETER _WB_PROJECTSCRATCH_DIR(1) = C:\Users\MAYANK\Desktop\NAYA MODEL01 (Ansys 18.1)\_ProjectScratch\Scr9956\

 SET PARAMETER DIMENSIONS ON  _WB_SOLVERFILES_DIR
  TYPE=STRI  DIMENSIONS=      248        1        1

 PARAMETER _WB_SOLVERFILES_DIR(1) = C:\Users\MAYANK\Desktop\NAYA MODEL01 (Ansys 18.1)\NEW_files\dp0\SYS-5\MECH\

 SET PARAMETER DIMENSIONS ON  _WB_USERFILES_DIR
  TYPE=STRI  DIMENSIONS=      248        1        1

 PARAMETER _WB_USERFILES_DIR(1) = C:\Users\MAYANK\Desktop\NAYA MODEL01 (Ansys 18.1)\NEW_files\user_files\
 --- Data in consistent NMM units. See Solving Units in the help system for more

 MPA UNITS SPECIFIED FOR INTERNAL   
  LENGTH      = MILLIMETERS (mm)
  MASS        = TONNE (Mg)
  TIME        = SECONDS (sec)
  TEMPERATURE = CELSIUS (C)
  TOFFSET     = 273.0
  FORCE       = NEWTON (N)
  HEAT        = MILLIJOULES (mJ)

 INPUT  UNITS ARE ALSO SET TO MPA

 *** ANSYS - ENGINEERING ANALYSIS SYSTEM  RELEASE Release 18.1     18.1     ***
 DISTRIBUTED ANSYS Mechanical Enterprise                      

 00000000  VERSION=WINDOWS x64   00:161  DEC 08, 2018 CP=      0.562

 NEW--Static Structural (K3)                                                  



          ***** ANSYS ANALYSIS DEFINITION (PREP7) *****
 *********** Nodes for the whole assembly ***********
 *********** Elements for Body 1 "SolidModel.1" ***********
 *********** Send User Defined Coordinate System(s) ***********
 *********** Set Reference Temperature ***********
 *********** Send Materials ***********
 *********** Sending Coordinate Systems for External Layered Section***********
 *********** Sending Materials for External Layered Section***********
 *********** Send External Layered Section Properties ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Fixed Supports ***********
 *********** Define Force Using Surface Effect Elements ***********


 ***** ROUTINE COMPLETED *****  CP =        29.469


 --- Number of total nodes = 1695840
 --- Number of contact elements = 8488
 --- Number of spring elements = 0
 --- Number of bearing elements = 0
 --- Number of solid elements = 1526112
 --- Number of condensed parts = 0
 --- Number of total elements = 1534600

 *GET  _WALLBSOL  FROM  ACTI  ITEM=TIME WALL  VALUE= 0.282777778   
 ****************************************************************************
 *************************    SOLUTION       ********************************
 ****************************************************************************

 *****  ANSYS SOLUTION ROUTINE  *****


 PERFORM A STATIC ANALYSIS
  THIS WILL BE A NEW ANALYSIS

 LARGE DEFORMATION ANALYSIS

 USE PRECONDITIONED CONJUGATE GRADIENT SOLVER
  CONVERGENCE TOLERANCE = 1.00000E-08
  MAXIMUM ITERATION     = NumNode*DofPerNode*  1.0000   

 MEMORY SAVING OPTION TURNED ON FOR PCG SOLVER

 CONTACT INFORMATION PRINTOUT LEVEL       1

 DO NOT COMBINE ELEMENT MATRIX FILES (.emat) AFTER DISTRIBUTED PARALLEL SOLUTION

 DO NOT COMBINE ELEMENT SAVE DATA FILES (.esav) AFTER DISTRIBUTED PARALLEL SOLUTION

 NLDIAG: Nonlinear diagnostics CONT option is set to ON.
         Writing frequency : each ITERATION.

 DEFINE RESTART CONTROL FOR LOADSTEP LAST
 AT FREQUENCY OF LAST AND NUMBER FOR OVERWRITE IS    0

 DELETE RESTART FILES OF ENDSTEP
 ****************************************************
 ******************* SOLVE FOR LS 1 OF 1 ****************

 SELECT       FOR ITEM=TYPE COMPONENT=   
  IN RANGE        13 TO         13 STEP          1

       8488  ELEMENTS (OF    1534600  DEFINED) SELECTED BY  ESEL  COMMAND.

 SELECT      ALL NODES HAVING ANY ELEMENT IN ELEMENT SET.

     9558 NODES (OF  1695840  DEFINED) SELECTED FROM
     8488 SELECTED ELEMENTS BY NSLE COMMAND.

 SPECIFIED SURFACE LOAD PRES FOR ALL SELECTED ELEMENTS  LKEY =  1   KVAL = 1
      SET ACCORDING TO TABLE PARAMETER = _LOADVARI87X                   

 SPECIFIED SURFACE LOAD PRES FOR ALL SELECTED ELEMENTS  LKEY =  2   KVAL = 1
      SET ACCORDING TO TABLE PARAMETER = _LOADVARI87Y                   

 SPECIFIED SURFACE LOAD PRES FOR ALL SELECTED ELEMENTS  LKEY =  3   KVAL = 1
      SET ACCORDING TO TABLE PARAMETER = _LOADVARI87Z                   

 ALL SELECT   FOR ITEM=NODE COMPONENT=   
  IN RANGE         1 TO    1865424 STEP          1

    1695840  NODES (OF    1695840  DEFINED) SELECTED BY NSEL  COMMAND.

 ALL SELECT   FOR ITEM=ELEM COMPONENT=   
  IN RANGE         1 TO    1704168 STEP          1

    1534600  ELEMENTS (OF    1534600  DEFINED) SELECTED BY  ESEL  COMMAND.

 PRINTOUT RESUMED BY /GOP

 USE AUTOMATIC TIME STEPPING THIS LOAD STEP

 USE       1 SUBSTEPS INITIALLY THIS LOAD STEP FOR ALL  DEGREES OF FREEDOM
 FOR AUTOMATIC TIME STEPPING:
   USE     10 SUBSTEPS AS A MAXIMUM
   USE      1 SUBSTEPS AS A MINIMUM

 TIME=  1.0000   

 ERASE THE CURRENT DATABASE OUTPUT CONTROL TABLE.


 WRITE ALL  ITEMS TO THE DATABASE WITH A FREQUENCY OF NONE
   FOR ALL APPLICABLE ENTITIES

 WRITE NSOL ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

 WRITE RSOL ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

 WRITE STRS ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

 WRITE EPEL ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

 WRITE EPPL ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

 NONLINEAR STABILIZATION CONTROL:
 KEY=OFF


 *GET  ANSINTER_  FROM  ACTI  ITEM=INT        VALUE=  0.00000000   

 *IF  ANSINTER_                         ( =   0.00000     )  NE 
      0                                 ( =   0.00000     )  THEN   

 *ENDIF

 *****  ANSYS SOLVE    COMMAND  *****

 *** WARNING ***                         CP =      30.422   TIME= 00:16:58
 Element shape checking is currently inactive.  Issue SHPP,ON or        
 SHPP,WARN to reactivate, if desired.                                   

 *** NOTE ***                            CP =      71.734   TIME= 00:17:12
 The model data was checked and warning messages were found.            
  Please review output or errors file ( C:\Users\MAYANK\Desktop\NAYA    
 MODEL01 (Ansys 18.1)\_ProjectScratch\Scr9956\file0.err ) for these     
 warning messages.                                                      

 *** SELECTION OF ELEMENT TECHNOLOGIES FOR APPLICABLE ELEMENTS ***
      --- GIVE SUGGESTIONS AND RESET THE KEY OPTIONS ---

 ELEMENT TYPE    1 IS SOLID185. IT IS ASSOCIATED WITH LINEAR MATERIALS ONLY
 BUT MATERIALS ARE ANISOTROPIC. KEYOPT(2)=2 IS SUGGESTED AND HAS BEEN RESET.
  KEYOPT(1-12)=    0    2    1    0    0    0    0    1    0    0    0    0



 *** ANSYS - ENGINEERING ANALYSIS SYSTEM  RELEASE Release 18.1     18.1     ***
 DISTRIBUTED ANSYS Mechanical Enterprise                      

 00000000  VERSION=WINDOWS x64   00:17:14  DEC 08, 2018 CP=     73.094

 NEW--Static Structural (K3)                                                  



                       S O L U T I O N   O P T I O N S

   PROBLEM DIMENSIONALITY. . . . . . . . . . . . .3-D                 
   DEGREES OF FREEDOM. . . . . . UX   UY   UZ 
   ANALYSIS TYPE . . . . . . . . . . . . . . . . .STATIC (STEADY-STATE)
   OFFSET TEMPERATURE FROM ABSOLUTE ZERO . . . . .  273.15   
   NONLINEAR GEOMETRIC EFFECTS . . . . . . . . . .ON
   EQUATION SOLVER OPTION. . . . . . . . . . . . .PCG               
      MEMORY SAVING OPTION. . . .  . . . . . . . .ON
      TOLERANCE. . . . . . . . . . . . . . . . . . 1.00000E-08
   NEWTON-RAPHSON OPTION . . . . . . . . . . . . .PROGRAM CHOSEN  
   GLOBALLY ASSEMBLED MATRIX . . . . . . . . . . .SYMMETRIC 

 *** NOTE ***                            CP =      73.531   TIME= 00:17:14
 Poisson's ratio PR input has been converted to NU input.               

 *** WARNING ***                         CP =      74.609   TIME= 00:17:15
 Material number 13 (used by element 1695681 ) should normally have at  
 least one MP or one TB type command associated with it.  Output of     
 energy by material may not be available.                               

 *** NOTE ***                            CP =      75.484   TIME= 00:17:16
 The step data was checked and warning messages were found.             
  Please review output or errors file ( C:\Users\MAYANK\Desktop\NAYA    
 MODEL01 (Ansys 18.1)\_ProjectScratch\Scr9956\file0.err ) for these     
 warning messages.                                                      

 *** NOTE ***                            CP =      75.484   TIME= 00:17:16
 This nonlinear analysis defaults to using the full Newton-Raphson      
 solution procedure.  This can be modified using the NROPT command.     

 *** NOTE ***                            CP =      75.484   TIME= 00:17:16
 The conditions for direct assembly have been met.  No .emat or .erot   
 files will be produced.                                                

 
 
     D I S T R I B U T E D   D O M A I N   D E C O M P O S E R
 
  ...Number of elements: 1534600
  ...Number of nodes:    1695840
  ...Decompose to 4 CPU domains
  ...Element load balance ratio =     1.017


                      L O A D   S T E P   O P T I O N S

   LOAD STEP NUMBER. . . . . . . . . . . . . . . .     1
   TIME AT END OF THE LOAD STEP. . . . . . . . . .  1.0000   
   AUTOMATIC TIME STEPPING . . . . . . . . . . . .    ON
      INITIAL NUMBER OF SUBSTEPS . . . . . . . . .     1
      MAXIMUM NUMBER OF SUBSTEPS . . . . . . . . .    10
      MINIMUM NUMBER OF SUBSTEPS . . . . . . . . .     1
   MAXIMUM NUMBER OF EQUILIBRIUM ITERATIONS. . . .    15
   STEP CHANGE BOUNDARY CONDITIONS . . . . . . . .    NO
   STRESS-STIFFENING . . . . . . . . . . . . . . .    ON
   TERMINATE ANALYSIS IF NOT CONVERGED . . . . . .YES (EXIT) 
   CONVERGENCE CONTROLS. . . . . . . . . . . . . .USE DEFAULTS
   PRINT OUTPUT CONTROLS . . . . . . . . . . . . .NO PRINTOUT
   DATABASE OUTPUT CONTROLS
      ITEM     FREQUENCY   COMPONENT
       ALL       NONE              
      NSOL        ALL              
      RSOL        ALL              
      STRS        ALL              
      EPEL        ALL              
      EPPL        ALL              


 SOLUTION MONITORING INFO IS WRITTEN TO FILE= file.mntr                                                                                                                                                                                                                                                          
 MAXIMUM NUMBER OF EQUILIBRIUM ITERATIONS HAS BEEN MODIFIED             
  TO BE, NEQIT = 22, BY SOLUTION CONTROL LOGIC.                         


 *** NOTE ***                            CP =      91.141   TIME= 00:170
 The PCG solver has automatically set the level of difficulty for this  
 model to 4.                                                            

 *** WARNING ***                         CP =     151.609   TIME= 00:19:24
 An error has occurred writing to the file = 3 which may imply a full   
 disk.                                                                  
 The system I/O error = 28.  Please refer to your system documentation  
 on I/O errors.                                                         
                                                                        
                                                                        

 

 

 

 

SandeepMedikonda posted this 1 weeks ago

Ashish, it looks like you have a full disk. Make some space and also based on some of the warnings, you might want to turn off distributed solve and run. See this post.

The comment about named selection seems like a warning to me and doesn't seem to be the problem Right click on that message and identify the object that is creating the problem. See what is wrong in the naming of it and correct it.

Regards,
Sandeep
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AshishChauhan posted this 6 days ago

Hello sir,

I checked my disk space while solution was running and it was getting full , as you said. And, after increasing my disk space, the solution ran fine.

Thank you for the help.

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