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Duplicate element IDs in the same deck runs without error. Why?

sudhish.kumar
I have a Sol101 analysis deck that has a set of element Ids that are duplicated.
 
A set of CTRIA3 /CQUAD4 elements have been given the same ID as that of another set of CBEAM element.
 
I am not seeing any fatal error or warning in the F06 file.
 
Why is this happening?
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  • 0
    Not sure if this adds anything to this topic or not but with grids I have noticed that one can have redundant grid id's defined and not get a fatal error if the grids positions are defined exactly the same. If the grids with the same id have a positional difference one does get a fatal error that looks like this.
     
     *** USER FATAL MESSAGE 9994 (BULKPM)
       GRID with ID=1001 near line 3
       was entered more than once, with differences starting at field X1.
     
    I'm not sure if this behavior is true for other entities (element, property, etc) as I haven't tested it.
     
    Is this topic covered in any existing Nastran Docs?
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  • 0
    Not sure if this adds anything to this topic or not but with grids I have noticed that one can have redundant grid id's defined and not get a fatal error if the grids positions are defined exactly the same. If the grids with the same id have a positional difference one does get a fatal error that looks like this.
     
     *** USER FATAL MESSAGE 9994 (BULKPM)
       GRID with ID=1001 near line 3
       was entered more than once, with differences starting at field X1.
     
    I'm not sure if this behavior is true for other entities (element, property, etc) as I haven't tested it.
     
    Is this topic covered in any existing Nastran Docs?
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