/post1 trouble wtith Ansys Workbench thermal transient

- May 19, 2023 at 7:53 am
  
  John Miller
  Subscriber
  
  Hello together,
  
  I’m working on an FDM AM simulation and got some troubles with the postprocessing.
  The simulation with ekill and alive is working just fine. I’m trying to plot the thermal flux at the contact surface and the thermal contact conductance via APDL snippet:
  ! Commands inserted into this file will be executed immediately after the ANSYS /POST1 command.
  ! Active UNIT system in Workbench when this object was created: Metric (m, kg, N, s, V, A)
  ! NOTE: Any data that requires units (such as mass) is assumed to be in the consistent solver unit system.
  ! See Solving Units in the help system for more information.
  !
  step_nr=ARG1 ! here ARG1 = 1 the first load step
  !
  set,step_nr
  *stat
  esel,s,type,,mycid !
  ! set colors for white background
  /RGB, INDEX,100,100,100, 0
  /RGB, INDEX,80,80,80, 13
  /RGB, INDEX,60,60,60, 14
  /RGB, INDEX,0,0,0, 0
  !
  /show,png
  /view,1,1,1,1
  ples,cont,flux ! plot heat flux through contact elements
  etable,tcc_i,nmisc,94
  !
  plet,tcc_i,1
  allsel
  !
  ! plot 1 = thermal flux at the contact surface
  ! plot 2 = applied thermal contact conductance
  The problem is that the deactivated elements are covering the print bed contact with the extruded material. In the picture, you can see the print bed (big cuboid) and the extruded material (small cuboid). Is there a way to fade out the extruded part to reveal the contact area?
  
  With best regards
  John M.
- May 22, 2023 at 12:27 pm
  
  Chandra Sekaran
  Ansys Employee
  
  May be use /trlcy,cm,name,0.7 to get the elements you do not care about to show with translucency? You can also unselect the elements.
  - May 25, 2023 at 10:16 am
    
    John Miller
    Subscriber
    
    Hello Chandra,
    
    thank you for your helpfull answer.
    When I apply the changes the plot isn’t still what I indended.
    Here is my applied script:
    /graphics,power
    /post1
    step_nr=5
    !
    set,step_nr
    *stat
    esel,s,type,,mycid !
    ! set colors for white background
    /RGB, INDEX,100,100,100, 0
    /RGB, INDEX,80,80,80, 13
    /RGB, INDEX,60,60,60, 14
    /RGB, INDEX,0,0,0, 0
    !
    /show,png
    /trlcy,cm,0,bed
    /trlcy,cm,0,bed2
    /trlcy,cm,1,path
    esel,s,ename,173
    /trlcy,elem,0
    esel,all
    !
    /view,all,1,1,1
    /angle,1,0,ZM,0
    /angle,2,0,ZM,0
    /eshape,1
    ples,cont,flux ! plot heat flux through contact elements
    etable,tcc_i,nmisc,94
    !
    plet,tcc_i,1
    allsel
    !
    ! plot 1 = thermal flux at the contact surface
    ! plot 2 = applied thermal contact conductance
    The plots are looking this way:
    
    The solve out file shows this:
    ***** ANSYS RESULTS INTERPRETATION (POST1) *****
    *** NOTE *** CP = 413.531 TIME= 13:48:38
    Reading results into the database (SET command) will update the current
    displacement and force boundary conditions in the database with the
    values from the results file for that load set. Note that any
    subsequent solutions will use these values unless action is taken to
    either SAVE the current values or not overwrite them (/EXIT,NOSAVE).
    PARAMETER ARG1 = 5.000000000
    Use PowerGraphics for solid and shell elements
    *** NOTE *** CP = 413.531 TIME= 13:48:38
    Facet level set to 1 for maximum speed
    Use /EFACET,2 for curved boundaries.
    You have already entered the general postprocessor (POST1).
    PARAMETER STEP_NR = 5.000000000
    
    USE LOAD STEP 5 SUBSTEP LAST FOR LOAD CASE 0
    SET COMMAND GOT LOAD STEP= 5 SUBSTEP= 1 CUMULATIVE ITERATION= 5
    TIME/FREQUENCY= 0.25000
    TITLE= RADuCONV--Thermisch-transient (A5)
    ABBREVIATION STATUS-
    ABBREV STRING
    SAVE_DB SAVE
    RESUM_DB RESUME
    QUIT Fnc_/EXIT
    POWRGRPH Fnc_/GRAPHICS
    PARAMETER STATUS- ( 84 PARAMETERS DEFINED)
    (INCLUDING 24 INTERNAL PARAMETERS)
    NAME VALUE TYPE DIMENSIONS
    ABC -1.00000000 SCALAR
    AX 5.000000000E-004 SCALAR
    BX 0.00000000 SCALAR
    CID 7.00000000 SCALAR
    DT 5.000000000E-002 SCALAR
    DTCOOL 0.100000000 SCALAR
    DY 5.000000000E-004 SCALAR
    DZ 5.000000000E-004 SCALAR
    HC_A 100.000000 SCALAR
    HC_B 80.0000000 SCALAR
    HC_C 60.0000000 SCALAR
    HC_EX_COOL 30.0000000 SCALAR
    HC_OUT 30.0000000 SCALAR
    I 20.0000000 SCALAR
    ICOOL 1.00000000 SCALAR
    II 1.00000000 SCALAR
    IIJJ 2.00000000 SCALAR
    IJK 2.00000000 SCALAR
    J 1.00000000 SCALAR
    JJJ 1.00000000 SCALAR
    KK 20.0000000 SCALAR
    LC 1.00000000 SCALAR
    PC 1.00000000 SCALAR
    PDY 1.000000000E-003 SCALAR
    SC 1.00000000 SCALAR
    STEP_NR 5.00000000 SCALAR
    T 1.00000000 SCALAR
    TA 80.0000000 SCALAR
    TB 60.0000000 SCALAR
    TBED 40.0000000 SCALAR
    TBULK 25.0000000 SCALAR
    TC 50.0000000 SCALAR
    TCC2 TABLE 2 1 1
    TEMPERATURE TEMP CHARACTER
    TEX_COOL 40.0000000 SCALAR
    THXY1 0.00000000 SCALAR
    THXY2 0.00000000 SCALAR
    THYZ1 0.00000000 SCALAR
    THYZ2 0.00000000 SCALAR
    THZX1 0.00000000 SCALAR
    THZX2 0.00000000 SCALAR
    TID 8.00000000 SCALAR
    TL 70.0000000 SCALAR
    TOL 1.000000000E-006 SCALAR
    TOUT 10.0000000 SCALAR
    TR 0.100000000 SCALAR
    VX 1.000000000E-002 SCALAR
    XLOAD 5.000000000E-004 SCALAR
    XR1 1.000000000E-002 SCALAR
    XR2 8.000000000E-003 SCALAR
    X_BOX_B 5.000000000E-004 SCALAR
    X_BOX_C 5.000000000E-004 SCALAR
    YCORR 1.000000000E-003 SCALAR
    YLOAD 5.000000000E-004 SCALAR
    YR1 1.500000000E-003 SCALAR
    YR2 1.500000000E-003 SCALAR
    Y_BOX_B 5.000000000E-004 SCALAR
    Y_BOX_C 5.000000000E-004 SCALAR
    ZR1 5.000000000E-004 SCALAR
    ZR2 5.000000000E-004 SCALAR
    PARAMETER PRIMARY VARIABLE LISTING-
    NAME VARIABLE(S)
    TCC2 1=TEMP 2= 3=
    *** WARNING *** CP = 413.969 TIME= 13:48:39
    Specified range of 0 to 0 is not permitted. The ESEL command is
    ignored.
    RED=100% GREEN=100% BLUE=100%
    for color index 0.
    RED=80% GREEN=80% BLUE=80%
    for color index 13.
    RED=60% GREEN=60% BLUE=60%
    for color index 14.
    RED=0% GREEN=0% BLUE=0%
    for color index 0.
    /SHOW SWITCH PLOTS TO PNG - RASTER MODE.
    COMPONENT BED TRANSLUCENCY SET TO 0.0000
    COMPONENT BED2 TRANSLUCENCY SET TO 0.0000
    COMPONENT PATH TRANSLUCENCY SET TO 1.0000
    *** WARNING *** CP = 414.016 TIME= 13:48:39
    For item = ENAME, component = 173 is invalid. The ESEL command is
    ignored.
    ALL ELEM TRANSLUCENCY SET TO 0.0000
    ALL SELECT FOR ITEM=ELEM COMPONENT=
    IN RANGE 1 TO 99718 STEP 1
    84182 ELEMENTS (OF 84182 DEFINED) SELECTED BY ESEL COMMAND.
    view point for window 1 1.0000 1.0000 1.0000
    ROTATION ANGLE FOR WINDOW 1 IS 0.00 ABOUT AXIS ZM
    ROTATION ANGLE FOR WINDOW 2 IS 0.00 ABOUT AXIS ZM
    ELEMENT DISPLAYS USING REAL CONSTANT OR SECTION DATA WITH FACTOR 1.00
    DISPLAY ELEMENT SOLUTION, ITEM=CONT COMP=FLUX
    CUMULATIVE DISPLAY NUMBER 1 WRITTEN TO FILE file000.png - RASTER MODE.
    DISPLAY TITLE=
    RADuCONV--Thermisch-transient (A5)
    STORE TCC_I FROM ITEM=NMIS COMP= 94 FOR ALL SELECTED ELEMENTS
    *** WARNING *** CP = 415.156 TIME= 13:48:39
    The ETABLE command has requested item = NMISC, comp = 94 of element 1
    (element type SOLID279). 0.0 is output, as this item does not exist.
    Checking for this discontinues.
    DISPLAY ELEMENT TABLE, ITEM=TCC_I OPER=1
    *** NOTE ***
    libpng version 1.0.8 - July 24, 2000
    Copyright (c) 1998-2000 Glenn Randers-Pehrson
    Copyright (c) 1996, 1997 Andreas Dilger
    Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
    ZLIB Version 1.2.11 Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
    CUMULATIVE DISPLAY NUMBER 2 WRITTEN TO FILE file001.png - RASTER MODE.
    DISPLAY TITLE=
    RADuCONV--Thermisch-transient (A5)
    SELECT ALL ENTITIES OF TYPE= ALL AND BELOW
    PARAMETER LOADSTEP = 1.000000000
    You have already entered the general postprocessor (POST1).
    
    USE LOAD STEP 1 SUBSTEP LAST FOR LOAD CASE 0
    SET COMMAND GOT LOAD STEP= 1 SUBSTEP= 1 CUMULATIVE ITERATION= 1
    TIME/FREQUENCY= 0.50000E-01
    TITLE= RADuCONV--Thermisch-transient (A5)
    *GET NUMNODE FROM NODE ITEM=COUN VALUE= 283054.000
    SET PARAMETER DIMENSIONS ON NODETEMP
    TYPE=ARRA DIMENSIONS= 283054 4 1
    VECTOR GET OPERATION nodetemp(1,1) VECTOR LENGTH= 283054
    NAME= NODE 1 LOC X
    VECTOR GET OPERATION nodetemp(1,2) VECTOR LENGTH= 283054
    NAME= NODE 1 LOC Y
    VECTOR GET OPERATION nodetemp(1,3) VECTOR LENGTH= 283054
    NAME= NODE 1 LOC Z
    VECTOR GET OPERATION NodeTemp(1,4) VECTOR LENGTH= 283054
    NAME= NODE 1 TEMP
    OPENED FILE= myTempfileWF.txt FOR COMMAND FILE DATA
    
    MAXIMUM TERM IN RESULT VECTOR= 1
    STRIDE IN VECTOR OPERATION= 1
    COMMAND FILE CLOSED
    
    PARAMETER NODEID = 27844.00000
    EXIT THE ANSYS POST1 DATABASE PROCESSOR
    
    I’m only interested in the display of the contact 173 elements and the heat flux through these elements. But I can’t plot it this way. The grey part named “path” should be transparent but it’s not. The underlying “bed” and “bed2″ should be not transparent, this is right in the second plot.
    With best regards
    John M.
  - May 26, 2023 at 3:23 pm
    
    John Miller
    Subscriber
    
    Hello Chandra,
    
    issue is solved.
    Everthing is working just fine.
    
    With best regards
    John M.