General Mechanical

General Mechanical

Help!, Thermal simulation DED process

    • Bharath Chodavarapu
      Subscriber

      Hello,

      I was trying to simulate a simple DED simulation in ANSYS, I was using the manual clustering option, But it wasnt able to generate to it. Can anyone where exaclty it was going wrong? I am attaching the relavent information.

      The file.out error message


       *** MAPDL - ENGINEERING ANALYSIS SYSTEM  RELEASE 2022 R2          22.2     ***
       Ansys Mechanical Enterprise Academic Research     
       00000000  VERSION=WINDOWS x64   13:23:20  JAN 12, 2023 CP=      0.766

                                                                                     

       

                ***** MAPDL ANALYSIS DEFINITION (PREP7) *****

       TURN OFF ELEMENT SHAPE CHECKING

       NBLOCK format=(1i9,3e20.9e3)                                              

       NBLOCK read of     6120 nodes completed.
       ##################################################
       End Nodes
       ##################################################

       ELEMENT TYPE          2 IS SOLID185     3-D 8-NODE STRUCTURAL SOLID 
        KEYOPT( 1- 6)=        0      0      0        0      0      0
        KEYOPT( 7-12)=        0      0      0        0      0      0
        KEYOPT(13-18)=        0      0      0        0      0      0

       CURRENT NODAL DOF SET IS  UX    UY    UZ  
        THREE-DIMENSIONAL MODEL
       ##################################################
       Start Elements
       ##################################################

       EBLOCK read of  19 nodes per line
       Format= (19i9)                                                                

       EBLOCK input of     4047 elements completed
       ##################################################
       End Elements
       ##################################################
       CMBLOCK read of ELEM component PRINT_PART  completed
       CMBLOCK read of ELEM component BASE_PLATE  completed
       CMBLOCK read of ELEM component WELD_1    completed
       CMBLOCK read of ELEM component WELD_2    completed
       CMBLOCK read of ELEM component WELD_3    completed
       CMBLOCK read of NODE component START_FACE_1  completed
       CMBLOCK read of NODE component START_FACE_2  completed
       CMBLOCK read of NODE component START_FACE_3  completed
       CMBLOCK read of NODE component BASE_PLATE_UPPER_ELEMENT_FACES  completed
       CMBLOCK read of NODE component PRINT_PART_LOWER_ELEMENT_FACES  completed
       CMBLOCK read of ELEM component WELD_1    completed
       CMBLOCK read of NODE component START_FACE_1  completed
       CMBLOCK read of ELEM component WELD_2    completed
       CMBLOCK read of NODE component START_FACE_2  completed
       CMBLOCK read of ELEM component WELD_3    completed
       CMBLOCK read of NODE component START_FACE_3  completed
       add named selection
       CMBLOCK read of ELEM component PRINT_PART  completed

       PARAMETER PRINT_CM_NAME = print_part      

       SELECT      COMPONENT PRINT_PART                                                                                                                                                                                                                                                      

       SELECT      ALL NODES HAVING ANY ELEMENT IN ELEMENT SET.

              816 NODES (OF       6120  DEFINED) SELECTED FROM
            297 SELECTED ELEMENTS BY NSLE COMMAND.

       DEFINITION OF COMPONENT = _PRINT3D_NO  ENTITY=NODE

       DEFINITION OF COMPONENT = _PRINT3D_EL  ENTITY=ELEM

       SELECT ALL ENTITIES OF TYPE= ALL  AND BELOW

       PARAMETER _AM_CHECK_PART =     1.000000000    
       CMBLOCK read of ELEM component BASE_PART  completed

       PARAMETER BASE_CM_NAME = base_part       

       SELECT      COMPONENT BASE_PART                                                                                                                                                                                                                                                       

       SELECT      ALL NODES HAVING ANY ELEMENT IN ELEMENT SET.

             5304 NODES (OF       6120  DEFINED) SELECTED FROM
           3750 SELECTED ELEMENTS BY NSLE COMMAND.

       DEFINITION OF COMPONENT = _PLATE_NO  ENTITY=NODE

       DEFINITION OF COMPONENT = _PLATE_EL  ENTITY=ELEM

       SELECT ALL ENTITIES OF TYPE= ALL  AND BELOW

       PARAMETER _AM_CHECK_TABLET =     1.000000000    

       PARAMETER _AM_PLATE_Y_TOP =     0.000000000    

       /INPUT FILE= scan_params.dat  LINE=       0

       PARAMETER VOLU_PER_STEP =     60.00000000    

       PARAMETER CLUSTER_MOD =     1.000000000    

       PARAMETER NO_WELDS =     3.000000000    

       PARAMETER SW_PICTURE =     1.000000000    

       PRINTOUT RESUMED BY /GOP

       PRINTOUT RESUMED BY /GOP

       *** NOTE ***                            CP =       1.922   TIME= 13:23:20
           THE 3 WELDS HAVE BEEN PROPERLY DEFINED.                                

       *** NOTE ***                            CP =       1.922   TIME= 13:23:20
           THE 3 START FACE OF WELD HAVE BEEN PROPERLY DEFINED.                   

       *** NOTE ***                            CP =       1.922   TIME= 13:23:20
       CLUSTERING WILL BE DONE FOR 3 WELD.  CONTINUED.                         

       *** ERROR ***                           CP =       1.938   TIME= 13:23:20
       Node 0 is not defined.                                                  


       NUMBER OF WARNING MESSAGES ENCOUNTERED=          0
       NUMBER OF ERROR   MESSAGES ENCOUNTERED=          1

      Thanks 

      Bharath

    • John Doyle
      Ansys Employee

      I see the message:  “Error:  Node 0 is not defined” at the end of your output.  

      Do all the named selections (components in MAPDL) have at least one element in them?  Maybe your mesh is too course.

      Are you able to run thru the example of manual clustering published in Section 5.7.1 in the Additive Manufacturing (R2022-R2)?

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