ELEMENT IS SWITCHED TO SMALL STRAIN OPTION

BaomocNguyen
BaomocNguyen Altair Community Member
in Community Q&A

i do some disc brake analysis and this happen to me but im not understand, can someone tell me the problem to fix this analysis?

MESSAGE ID : 259
** WARNING ZERO OR NEGATIVE VOLUME: 3D-ELEMENT ID: 312004
ELEMENT IS SWITCHED TO SMALL STRAIN OPTION
MESSAGE ID : 259
** WARNING ZERO OR NEGATIVE VOLUME: 3D-ELEMENT ID: 262886
ELEMENT IS SWITCHED TO SMALL STRAIN OPTION
MESSAGE ID : 259
** WARNING ZERO OR NEGATIVE VOLUME: 3D-ELEMENT ID: 84602
ELEMENT IS SWITCHED TO SMALL STRAIN OPTION

10-5-check.hm
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Answers

  • Marina_Lima
    Marina_Lima
    Altair Employee

    Hi,

    Check you material property, you need to use a consistent systems of units. For example, if part lengths are in millimeters and the elastic modulus in GPa, the density should be in kg/mm3. This table is from OptiStruct, but the same applies to Radioss:

    image.png

    Best regards,
    Marina Lima

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