Sequential element activation for additive manufacturing. Simulation is running smoothly with no issue but no odb database is created.

 

I have been trying to model laser powder bed fusion process using progressive element activation. In the given input file the "*ELEMENT PROGRESSIVE ACTIVATION" for the element sets corresponding to layer 2 & 3 just before "* End part" keyword under part definition of both the layers. 

Further I have been using UEPACTIVATIONVOL subroutine to activate the element set corresponding to these layers using "* ACTIAVTE ELEMENT" under addlayer2 & addlayer3 steps of the model.

The UEPACTIVATIONVOL routine: 

 

  SUBROUTINE UEPACTIVATIONVOL(lflags,
    &     epaName,noel,nElemNodes,ielemNodes,
    &     mcrd,CoordNodes,uNodes, 
    &     kstep,kinc,time,dt, 
    &     temp,npredf,predef,
    &     nsvars,svars,sol,solinc,volFract,
    &     nVolumeAddEvents,volFractAdded,csiAdded, 
    &     oriT,eigenstrain)    

     !INCLUDE 'ABA_PARAM.INC'

     DIMENSION lFlags(*),elemNodes(nElemNodes),
    &     CoordNodes(mcrd,nElemNodes),solinc(*),
    &     uNodes(mcrd,nElemNodes),time(2),svars(nsvars,2), 
    &     temp(2,nElemNodes),predef(2,npredf,nElemNodes),sol(*)
     DIMENSION volFractAdded(*),csiAdded(3,*),volFract(*)

     character*80 epaName
     parameter(zero=0, one=1)
     
     !user coding to define volFractAdded
     !and possibly update eigenstrains, lFlags(4), ori, svars
     
     volFractAdded(1)= zero
     volFractAdded(2)= zero
     
     if(kstep.ge.3) then
       volFractAdded(1)  = one         
     else 
       volFractAdded(1)  = zero
     endif
     
     if(kstep.ge.6) then
       volFractAdded(2)  = one         
     else 
       volFractAdded(2)  = zero
     endif
     
     
     RETURN
     END  SUBROUTINE UEPACTIVATIONVOL

 

 

What I found that the simulation was running smoothly (as it was running before, without UEPACTIVATIONVOL using only DFLUX) with some warning messages:

 

***WARNING: FOR *TIE PAIR (ASSEMBLY_LAYER1_BOTTOM-ASSEMBLY_BASE_TOP_SURFACE), 
            ADJUSTED NODES WITH VERY SMALL ADJUSTMENTS WERE NOT PRINTED. 
            SPECIFY *PREPRINT,MODEL=YES FOR COMPLETE PRINTOUT.
 *tie, name="ASSEMBLY_layer1 and layer2", type=SURFACETOSURFACE, adjust=YES

***WARNING: FOR *TIE PAIR (ASSEMBLY_LAYER2_BOTTOM-ASSEMBLY_LAYER1_TOP), 
            ADJUSTED NODES WITH VERY SMALL ADJUSTMENTS WERE NOT PRINTED. 
            SPECIFY *PREPRINT,MODEL=YES FOR COMPLETE PRINTOUT.
 *tie, name="ASSEMBLY_layer2 and layer3", type=SURFACETOSURFACE, adjust=YES

***WARNING: FOR *TIE PAIR (ASSEMBLY_LAYER3_BOTTOM-ASSEMBLY_LAYER2_TOP), 
            ADJUSTED NODES WITH VERY SMALL ADJUSTMENTS WERE NOT PRINTED. 
            SPECIFY *PREPRINT,MODEL=YES FOR COMPLETE PRINTOUT.

 

But these running analysis is not producing any odb file output.

 

For reference I am also including the .sta file for the analysis:--

 

Please let me know what is the issue going on