modal analysis in meter unit?

alpharays786
alpharays786 Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

Can I change the default unit of milimeter (mm) into meter (m)? and how to do it?

 

Thanks

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Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited April 2015

    See http://forum.altairhyperworks.com/index.php?/topic/2524-what-are-the-units-used-in-otpistruct/?hl=units

  • alpharays786
    alpharays786 Altair Community Member
    edited April 2015

    Hi,

     

    I already setup material properties with value according SI unit as below:

    E = in pascal (Pa)

    NU = unitless

    Density = kg/m^3

     

    Then, run modal analysis. But has below error.

     

     A fatal error has been detected during input processing:

      *** ERROR # 2023 ***

      ADAMS MNF file creation requires DTI,UNITS card.

     *** Run terminated because of error(s) in the input data.

     

    Anyone can help, what is wrong actually?

     

    Thanks

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2015

    Hi,

     

    You need to add DTI UNITS card.

     

    Go to Control cards>> DTI_UNITS>> input the same unit system which you have used for modelling and run the analysis.

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