Error in crash analysis of baja rollcage

Ashwani Mittal_21124
Ashwani Mittal_21124 Altair Community Member
edited October 2020 in Community Q&A

Hello Everyone,

I am trying to perform crash analysis of baja rollcage using radioss but I am facing the following errors:

ERROR ID :   286
** ERROR IN INPUT CONSISTENCY
DESCRIPTION :
   2D SOLIDS (QUAD AND TRIA) ARE NOT COMPATIBLE WITH N2D3D=0
 .. UNITS SYSTEM
 .. FUNCTIONS & TABLES
 .. MATERIALS
 .. NODES
 .. PROPERTIES
ERROR ID :   178
** ERROR IN PART DEFINITION (PROPERTY)
DESCRIPTION :
   -- PART ID : 20
   -- PART TITLE : Lump_MASS
   PROPERTY ID=0  DOES NOT EXIST
ERROR ID :   179
** ERROR IN PART DEFINITION (MATERIAL)
DESCRIPTION :
   -- PART ID : 20
   -- PART TITLE : Lump_MASS
   MATERIAL ID=0 DOES NOT EXIST
 .. 2D SOLID ELEMENTS
 .. 3D TRIANGULAR SHELL ELEMENTS
 .. SUBSETS
 .. ELEMENT GROUPS
 .. PART GROUPS
 .. NODE GROUP
 .. INITIAL VELOCITIES
 .. DOMAIN DECOMPOSITION
 .. ELEMENT GROUPS
 .. RIGID WALLS
 .. RIGID BODIES
 .. ELEMENT BUFFER INITIALIZATION
ERROR ID :   228
** ERROR ZERO OR NEGATIVE 2D SOLID VOLUME
DESCRIPTION :
   ZERO OR NEGATIVE VOLUME FOR 2D ELEMENT ID=3
ERROR ID :   226
** ERROR IN SOLID PROPERTY

ERROR ID :   227
** ERROR IN QUAD ELEMENT

 

For reference, I am also attaching .hm file and .mvw file.

Any type of help would be greatly appreciated.

Thank You in advance.

Unable to find an attachment - read this blog

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Answers

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited October 2020

    Please, use the 'Model Checker' Utility to perform a model check before running your model.

    It will show you some of your errors.

     

    This topic covers OptiStruct, but it is the same approach.

    Some of your errors might be related to mixed 2d and 3d elements in the same component.

    Some of them are related to lack of property or material. Please review your model with the model checker.

    https://community.altair.com/community?id=community_question&sys_id=f076043a1b2bd0908017dc61ec4bcbed

     

  • Ashwani Mittal_21124
    Ashwani Mittal_21124 Altair Community Member
    edited October 2020
    Altair Forum User said:

    Please, use the 'Model Checker' Utility to perform a model check before running your model.

    It will show you some of your errors.

     

    This topic covers OptiStruct, but it is the same approach.

    Some of your errors might be related to mixed 2d and 3d elements in the same component.

    Some of them are related to lack of property or material. Please review your model with the model checker.

    https://community.altair.com/community?id=community_question&sys_id=f076043a1b2bd0908017dc61ec4bcbed

     

    Thank You Adriano A. Koga, I have tried model checker as you have stated previously but I am unable to solve the error 'components have more than one element type' shown in the attached image. Even I have tried remeshing my model with quads elements then also I am getting the same error again.

    <?xml version="1.0" encoding="UTF-8"?>Errors.JPG

  • Pranav Hari
    Pranav Hari Altair Community Member
    edited July 2020

    Hi Ashwani Mittal

     

    1. Go to 2D > Elem types and select all your shell elements and update as below image

     

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.7384c784be22fa5181b5ba5186421324.png

     

    2. Assign card image none to lump mass

     

    image.png.c5da16ad03c4246af05959743f522102.png

     

    After making these 2 changes the analysis is progressing from my end. You can try it

     

     

     

  • Ashwani Mittal_21124
    Ashwani Mittal_21124 Altair Community Member
    edited July 2020
    Altair Forum User said:

    Hi Ashwani Mittal

     

    1. Go to 2D > Elem types and select all your shell elements and update as below image

     

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.7384c784be22fa5181b5ba5186421324.png

     

    2. Assign card image none to lump mass

     

    <?xml version="1.0" encoding="UTF-8"?>image.png.c5da16ad03c4246af05959743f522102.png

     

    After making these 2 changes the analysis is progressing from my end. You can try it

     

     

     

    Hi @Pranav Hari ,

    I have tried out your suggestion and it has removed my some errors but still I am getting following some errors:

     ERROR ID :   286
    ** ERROR IN INPUT CONSISTENCY
    DESCRIPTION :
       2D SOLIDS (QUAD AND TRIA) ARE NOT COMPATIBLE WITH N2D3D=0
     .. UNITS SYSTEM
     .. FUNCTIONS & TABLES
     .. MATERIALS
     .. NODES
     .. PROPERTIES
     .. 2D SOLID ELEMENTS
     .. 3D TRIANGULAR SHELL ELEMENTS
     .. SUBSETS
     .. ELEMENT GROUPS
     .. PART GROUPS
     .. NODE GROUP
     .. INITIAL VELOCITIES
     .. DOMAIN DECOMPOSITION
     .. ELEMENT GROUPS
     .. RIGID WALLS
     .. RIGID BODIES
     .. ELEMENT BUFFER INITIALIZATION

    ERROR ID :   228
    ** ERROR ZERO OR NEGATIVE 2D SOLID VOLUME
    DESCRIPTION :
       ZERO OR NEGATIVE VOLUME FOR 2D ELEMENT ID=3
    ERROR ID :   226
    ** ERROR IN SOLID PROPERTY

     

    Can you please resolve these issues?

    Thank You

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