Learning Forum

[J.Benavides]

I want to restart the calculation from a defined sub-step within a do-loop. And I get the following warning:

*** WARNING ***                         CP =     226.328   TIME= 13:25:17
 Restart for ENDSTEP is not possible from the specified substep since it 
 is already the end of the load step.  The ENDSTEP option reverts back   
 to CONTINUE for the restarted analysis.

The do-loop is to change the material of elements that exceed a certain predefined deformation limit.

/SOLU

!INITIAL CONDITION

ANTYPE,0            ! Static analysis

NLGEOM,1            ! Large deflection

AUTOTS,on           ! Automatic time stepping/load stepping

OUTRES,all,all      ! Writes all solution data for all substeps  

Substep=80

time,1

NSUBST,Substep,Substep,Substep

OUTRES,ALL,ALL                          ! Writes all solution data for all substeps  

RESCONTROL,DELETE                

RESCONTROL,DEFINE,ALL,ALL           !NEW: Save all substeps for possible restart, a file is generated for each restart (80 File *.r0XX)

SOLVE

parsav,all,parameter                    !NEW: Writes all parameter into Parameter file

FINISH

SAVE,,,,all

 

*Do,k,1,substep

    /post1

    SET,1,k,1,                                             !Select substep

    ETABLE,Tab%k%,nl,EPEQ                    !Element's table of Accumulated equivalent plastic strain    

    esel,s,etab,Tab%k%,limit,9999999999      !Select element from element table up strain limit

    cm,myelem%k%,elem                        !create componet of selected element.  

   

    cmsel,s,myelem%k%,elem

    *get,e_count,elem,,count,,comp,on

    allsel

    finish

           

    CMWRITE,Temp%k%,cm                      !NEW:Writes element components and assemblies into a temporary a file.

    x=k

    parsav,all,parameter                    !Write all parametar

    finish

    

   *if,e_count,gt,0,then

        /clear,nostart                      

        /SOLU

        antype,static,rest,1,x,endstep

        solve

        parres,,parameter                           !NEW: Reads parameters

        /gopr

        /input,temp%x%,cm

        cmsel,s,myelem%x%,elem             !Selection of the component

        mpchg,2,all                                     !Change the material of selected element    

        time,1

        solve

        finish

    *endif      

*enddo

From the first solution, I have that for the last four sub-steps (77,78,79,80) I should perform the restart to change the material of the elements.

 

But finally, the restart is not carried out as it should be from the corresponding sub-step, but it generates a new load step

 

I appreciate any help, thank you

[Ashish Khemka]

Hi,

Based on the message it looks like the analysis is completed.

Regards,

Ashish Khemka